Nio 5DUCKA20M Coffee Machine User Manual

: June 9, 2024
: Nio

Table of Contents

5DUCKA20M Coffee Machine
Product Information: Nio Coffee Machine
Product Usage Instructions:
Before Use:
Dispensing Coffee:
Preventive Maintenance:

5DUCKA20M Coffee Machine

Product Information: Nio Coffee Machine

The Nio Coffee Machine is a commercial grade coffee vending
machine manufactured by J.M. de Jong Automatenfabriek B.V. It is
designed to dispense hot coffee beverages using pre-packaged cups.
It features a user-friendly interface with a touchscreen display
and accepts payment through various methods including coins, bills,
and cards. The machine is equipped with a built-in water tank and
coffee bean grinder, making it easy and convenient to use in any
location.

Product Usage Instructions:

Before Use:

Make sure the machine is plugged in and turned on.
Ensure that there are enough cups, lids, and coffee packs
loaded in the machine.
If necessary, refill the water tank and coffee bean
hopper.

Dispensing Coffee:

On the main menu, select the desired type of coffee.
Select the cup size and quantity of cups.
If paying by cash, insert coins or bills into the machine. If
paying by card, insert or swipe your card.
Your coffee will be dispensed automatically.
If desired, add any additional condiments such as sugar or
creamer from the condiment station.

Preventive Maintenance:

Regular cleaning of the machine is recommended to maintain
optimal performance. This includes cleaning the dispensing area,
wiping down the exterior of the machine, and emptying the waste
bin. Additionally, it is important to regularly refill the water
tank and coffee bean hopper to ensure uninterrupted operation of
the machine. For any service or support needs, contact the dealer
or supplier of the machine.

User Manual Nio Coffee Machine
CKA Series CoEx ® brewer
5DUCKA20M EN V2.2

Preface
Copyright Disclaimer Introduction
2

J.M. de Jong Automatenfabriek B.V. © 2022.
The contents of this manual are copyrighted. Texts, images, and source files may only be used for professional purposes. No part of this guide may be reused, modified, or published without the prior written permission of the manufacturer. Printing pages is allowed only for professional use.
The English language version is the original version. All other language versions are translations of the original version.
Although this manual has been put together with the utmost care, J.M. de Jong Automatenfabriek B.V. accepts no liability for inaccuracies or omissions. No liability is accepted for the consequences arising from operation of the equipment in accordance with the information contained in these instructions. J.M. de Jong Automatenfabriek B.V. reserves the right to alter specifications at any time and without prior notification to the purchaser.
All rights reserved.
· Before using the coffee machine, please read the safety instructions and all of the information in this manual first.
· Keep this manual in a safe and accessible place for later reference.
· The machine serves hot drinks. Keep a distance from the outlet nozzles after selection, during dispense and when the drink is removed from the machine after dispense.
· Only properly trained service personnel may carry out installation, adjustments, repair or move the machine.
· This machine can be used by children aged 8 years and older and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and they understand the hazards involved.
· All information for normal daily use is found in the paragraph Using the coffee machine (on page 33).
Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

· The information in the other paragraphs is meant only for persons trained in the operation and maintenance of the machine.
· Solutions to simple issues or malfunctions that may occur are given in the back of the manual.
· The manual cannot be regarded as a replacement for the training and instruction, but must be seen as an addition to the training, and as a reference work.
· The user manual is valid for the machine supplied by the manufacturer, including the options installed by the manufacturer.
· The manufacturer accepts no liability for any damage resulting from incorrect or improper use of the machine, or resulting from modifications that have not been authorized by the manufacturer.
· Only use original parts from the manufacturer when the machine needs to be repaired.
· Contact the dealer / supplier of the coffee machine (see contact information in the next section) for maintenance or repairs not explained in this manual.
Service and support
For service and support contact the dealer / supplier of the machine.
Record dealer information in this box or use a dealer stamp. Telephone Service Number: Internet: Company name: Address: Area code – City: Country: Telephone: E-mail:
Record the serial number of the coffee machine in this box. Mention it when service is required. Serial number:

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Copyright. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Disclaimer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Service and support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
About this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Related documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Availability of this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Safety and risk levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.2 Safety and warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1.4 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1.5 Extended down time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1.1 Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.1.2 Inside view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.1.3 Door interior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.1.4 Inside view base cabinet — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 User interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1 Display layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.2 Main menu – Cup dispensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 Additional options submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.2.2 Jug dispensing submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.2.3 Number selection submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.2.4 Dispense submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.2.5 Ready submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.2.6 Message submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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3.2.7 Information submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4 Using the coffee machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 Before use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.2 Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2.1 Select a beverage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4.2.1.1 Cup dispensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.2.1.2 Cup dispensing by number — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.2.1.3 Jug dispensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.2.2 Payment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5 Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.1 Food safety engagement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5.2 Preventive maintenance schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.3 Daily maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 5.4 Weekly maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.5 Monthly maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 5.6 Preventive maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.6.1 Switch on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 5.6.2 Open the door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 5.6.3 Close the door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 5.6.4 Switch off / Putting out of order. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5.6.5 Scheduled rinse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 5.6.6 Flush mixers and brewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 5.6.7 Connect the fresh milk system — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 5.6.8 Clean the fresh milk system — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 5.6.9 Remove and clean the fresh milk parts — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 5.6.10 Clean waste bucket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 5.6.11 Clean the waste bin in the base cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 5.6.12 Clean the drip tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.6.13 Clean the mixing system and all hoses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 5.6.14 Remove and clean the brewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 5.6.15 Clean brewer with cleaning tablet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 5.6.16 Unblock the grinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 5.6.17 Clean the canisters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 5.6.18 Clean the cold water outlet nozzle — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 5.6.19 Deep clean the cold water outlet nozzle — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 5.6.20 Fill up the ingredient canisters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 5.6.21 Enter canister ingredient levels — optional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 5.6.22 Clean the outside of the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 5.6.23 Clean the touchscreen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 5.6.24 The service key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
5.6.24.1 Insert the service key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

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5.6.24.2 Remove the service key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

6 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
6.1 Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.1.1 Message: Brewer not in home position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.1.2 Message: Brewer out of position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.1.3 Message: Clean screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.1.4 Message: Clean the milk system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.1.5 Message: Cleaning Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.1.6 Message: Communication error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.1.7 Message: Door open. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.1.8 Message: Drip tray full. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 6.1.9 Message: Empty waste bucket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 6.1.10 Message: Enough water?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 6.1.11 Message: Filling boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 6.1.12 Message: Grinder blocked. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 6.1.13 Message: Heating boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6.1.14 Message: Install drip tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6.1.15 Message: Place the waste bucket in the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6.1.16 Message: Insert coins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6.1.17 Message: Mixer blocked. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6.1.18 Message: Machine Blocked. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6.1.19 Message: Not all ingredients available. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6.1.20 Message: No coffee detected in brewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6.1.21 Message: No water connected / No water in boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 6.1.22 Message: Place coffee funnel in the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.1.23 Message: Place cup in center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.1.24 Message: Place cup left. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.1.25 Message: Please load configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.1.26 Message: Please load the User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.1.27 Message: Replace water filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.1.28 Message: Rinse brewer with tablet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.1.29 Message: Startup problem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.1.30 Message: Temp. sensor disconnected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.1.31 Message: Temperature boiler (too) high. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.1.32 Message: Water level too low. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.1.33 Message: Wait, Heating boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.1.34 Message: Waste bucket full / Empty waste bucket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.1.35 Message: Water filter installed?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 6.1.36 Message: Ready, take your cup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

7 Technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
7.1 Standards and regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

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7.2 Type plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 7.3 Disassembly and recycling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 7.4 Technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 7.5 Cup and jug sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 7.6 Manufacturer contact information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8.1 Appendix list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 8.2 Declaration of conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

About this manual

Audience Scope
Conventions
8

This manual describes how to use and maintain the Nio coffee machine. Intended users are the end user and staff responsible for regular maintenance of the machine. De Jong DUKE assumes that staff will: · have sufficient technical knowledge and experience to carry
out the tasks assigned to them, · recognize and prevent possible hazards, · read and understand this manual, · follow the procedures described in this manual, · ensure that the machine will not harm personnel and/or
damage its environment.
If the responsible staff has permission to perform maintenance actions or to change parameters, De Jong DUKE expects that the operator is trained for these tasks.
This manual contains essential information for proper operation and maintenance of the machine. Following the instructions contained in this manual should assure trouble-free, safe operation and maintenance of the machine.
CAUTION Before using or maintaining the machine read this manual carefully to become familiar with the functionality. Make sure that any operator or service engineer understands the correct operating and maintenance procedures and all safety precautions. If any (part of the) information in this manual is unclear contact the supplier.
Operators and service engineers must be adequately trained in the correct operation of the machine. Keep this manual in a predetermined place near the machine.
This manual uses the following text conventions: · Actions that you should perform in a specific sequence are
numbered, for instance, e.g.: 1. Open the door of the coffee machine.
Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Related documents

· Black circled numbers (e.g. 1, 2, 3) and numbers between parentheses e.g. (1) in text refer to elements in a figure.
· Bold text is used for (sub)titles and for information that needs special attention: ‘Read these instructions carefully’.
· Menu names in the user interface are shown in bold, for example: return to the Main menu.
· Settings in the user interface are shown in italics; for example: 0.45.
· Soft keys, keyboard buttons and hardware buttons are shown between brackets, for example: [Start], [Enter], [2].
· Messages shown in the user interface are shown between quotation marks and in italics, e.g.: ‘Place cup right’.
· Cross-references to sections, tables, figures etc. are indicated as blue text or written as (see “…..” on page ..). The main purpose is easy recognition in the paper and on-line (PDF) version of the manual. In the on- line version, the crossreferences function as hyperlinks that can be used to navigate through the manual by clicking on them. Example: Scope (on page 8).
· The safety symbols indicate situations or actions that may endanger the operators and service engineers and are explained in detail in the safety section.
· One additional symbol is available to give the reader additional information:
TIP Recommendations for the reader.
In addition to this manual, the following documentation is available:
· Technical manual containing all information about the functionality of all parts in the machine, procedures for servicing and configuring the recipes.
· Electrical drawings contains the electrical drawing/diagrams of the machine.
· Spare parts manual containing relevant information for identification of the spare parts.
· Third party documentation contains the available documentation of third- party machine parts.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Availability of this manual

De Jong DUKE expects this manual to be available to all operators and service engineers. The original hard copy (paper) version should always be available near the machine.
If the operator has the permission to perform a number of maintenance actions or program activities, De Jong DUKE expects that the operator is trained according to the activities and that the appropriate documentation is available for the operator.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

1
Safety

1.1 Safety and risk levels

Four safety and risk levels are used in this manual. The risk levels and explanations are:
NOTE To show extra information that may help the reader.
CAUTION Indicates a potentially hazardous situation that, if not avoided, can result in minor or moderate injury or damage to the machine or property.
WARNING Indicates a potentially hazardous situation that, if not avoided can result in death, serious injury or machine damage. It includes hazards that are exposed when guards or security features are removed.
DANGER Indicates a hazardous situation that, if not avoided, can result in death or serious injury.

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1.2 Safety and warnings
12

The safety warnings in this section apply to the entire document.
The risk level associated with the explanation are:
DANGER All danger level warnings applicable to the entire document:
· Do not use water in or near the machine unless the instructions contain explicit directions to the contrary. Risk of electrocution when water comes in contact with internal electrical parts.
· Do not use a water jet to clean the coffee machine. · HOT water! The water system (boiler, pipes, etc.) may contain
hot water. Risk of burning when HOT water comes in contact with a person that can cause a scalding injury. · Do not move, lift or tilt the machine. Risk of serious personal (hand and finger) injuries. · Only qualified service personnel is allowed access to the internals of the machine.
WARNING All warning level warnings applicable to the entire document:
· Do not shake the machine while in use. Risk that machine can tip over and fall.
· Do not lean on the door when open. Risk that machine can tip over and fall. Risk of serious injury.
CAUTION All caution level warnings applicable to the entire document:
· Do not use aggressive cleaning products or abrasives to clean (parts of) the machine.
· Do not use a dish washer to clean parts. · Do not use a damaged machine. Please contact your supplier. · If a fault occurs disconnect the machine from the electrical
and water supplies. Please contact your supplier immediately.
NOTE All note level warnings applicable to the entire document:
· Use the machine only in areas where trained personnel can monitor the operation.
· Water and electrical connections must conform to local regulations.
· Make sure a waterlock is used in the water connection.
Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

· If the power cord is damaged it must be replaced by the manufacturer, the supplier or similar qualified persons.
· Do not use an extension cord. · Do not use an external timing device to manage the
availability of the machine.
· Damaged water connection hoses may only be repaired by trained personnel.
· Make sure to follow instructions on all safety labels on and in the coffee machine.
· Do not remove safety labels.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

1.3 Installation
1.4 Maintenance 1.5 Extended down time

For instructions about transportation, unpacking, and installation of the machine, consult the Technical manual.
· Installation, transportation, and adjustment of the machine is specialized work, only properly trained service personnel is allowed to do this.
· The coffee machine is for indoor use only. · Make sure the machine is placed on a level, flat and stable
surface in a hygienic, dry room with a temperature between 5 and 35 °C. · Make sure that the electricity and water supply connections comply to local regulations and remain easily accessible after installation.
Regular cleaning is needed to ensure hygienic operation of the machine. This manual explains all cleaning procedures to ensure a proper operation of the coffee machine.
· If the coffee machine will not be used for a longer period of time (more than one week) it is recommended to turn off the water supply and the electricity (if the power switch is not accessible pulling the main power plug from the wall socket is sufficient). This will also prevent unnecessary use of energy. If the coffee machine was used also check the cleaning procedures in section Switch off / Putting out of order (on page 47).
· In areas where the temperature can drop below freezing point, the boilers must be emptied. When freezing has occurred allow sufficient time for the machine to reach room temperature before switching on the machine. Contact your supplier (see Service and support on page 3) for more information.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Description
2.1 Overview

2
The Nio coffee machine is a compact semi-automatic machine for the preparation and vending of hot (and optionally cold) drinks. The coffee machine is equipped with a paperless CoEx® brewer to make fresh coffee and, depending on the configuration, also espresso.
The coffee machine is operated using the touchscreen panel on the door. By tapping one of the buttons on the screen a product choice can be made. Before a beverage is dispensed a cup or jug must be placed under one of the outlets. More details are found in the sections: · Using the coffee machine (on page 33) and · User interface (on page 20) for information shown on the
touchscreen.
The next sections contain drawings of the front, the inside and the optional base cabinet of the coffee machine. The drawings show the location and the name of the most important parts of the machine.
NOTE All pictures show a generic configuration. The actual model can be different. To improve clarity, colors in the pictures may be different from the actual colors.
More details are also found in the chapter Technical specifications (on page 105).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

2.1.1 Front view

Front view Nio small model with optional Fresh Milk refrigerator
NOTE All pictures show a generic configuration. The actual model can be different. To improve clarity, colors in the pictures may be different from the actual colors.
1. Touchscreen 2. Fresh Milk Pump unit — optional 3. Cup warmer on refrigerator —
optional 4. Refrigerator — optional 5. Refrigerator door lock 6. Waste bucket handle 7. USB port with cover 8. Waste bucket 9. Drip tray / Cup stand / Jug stand 10. Adjustable outlet 11. Cup sensors 12. Door handle – Hot water outlet (/
Cold water — optional) 13. On/Off power switch (on back side) 14. Door lock 15. Entrance for cleaning pill 16. Bean canister 17. Bean canister lid 18. Canister lock — optional 19. Ingredient canister(s)

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

2.1.2 Inside view

The inside view shows the location and names of the most important parts.
NOTE All pictures show a generic configuration. The actual model can be different. To improve clarity, colors in the pictures may be different from the actual colors.
Inside view Nio CoEx model with one bean canister, 2 ingredient canisters and 2 mixers.
1. Ingredient canister lid 2. Ingredient canister 3. Canister outlet nozzle 4. Exhaust filter drawer 5. Mixer suction trap 6. Mixer house 7. Steam hose (Fresh Milk models only)
— optional 8. Mixer bayonet catch 9. Adjustable outlet 10. Cabinet 11. Drip tray / cup stand / jug stand 12. Waste bucket 13. Extended waste bucket (instead of
pos 12) — optional 14. Waste guide to base cabinet
(instead of pos 12) — optional 15. Internal drip tray 16. CoEx brewer 17. Brewer locking grip 18. Brewer grip 19. Brewer outlet 20. Coffee funnel 21. Entrance for cleaning pill 22. Bean canister 23. Canister lid lock — optional

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

2.1.3 Door interior

Door interior Nio model with optional (sparkling) cold water hose.
NOTE All pictures show a generic configuration. The actual model can be different. To improve clarity, colors in the pictures may be different from the actual colors.
1. Service key 2. Hot water hose 3. Cold water hose – optional 4. Hot water hose (when combined with
cold water hose)

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

2.1.4 Inside view base cabinet — optional
Inside view base cabinet (Nio model)
NOTE All pictures show a generic configuration. The actual model can be different. To improve clarity, colors in the pictures may be different from the actual colors.
1. Base cabinet 2. Waste bin 3. Chiller sub cabinet — optional 4. Chiller flush button CO2– optional 5. Waste water bin 6. Waste water bin sensor — optional

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

User interface
3.1 Display layout

3
The coffee machine is operated with a touchscreen on the door. All selections are made by tapping (a short press) on one of the buttons or menu tabs on the touchscreen. Main screen layout (example)

NOTE All drawings and screen images of the coffee machine are based on generic configurations. The actual model will be different but the functionality is similar.
All screens and menus are explained in detail in the next sections. Using the touchscreen to dispense a beverage is explained in the chapter Using the coffee machine (on page 33).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

3.2 Main menu – Cup dispensing
The Main menu (or screen) is displayed when the machine is ready for use. It gives access to selections for cup dispensing and all other functions.
Main selection screen

1. [Cup beverage selections] buttons 6. [Number selection] button —

2. [Scroll up/down] buttons —

optional

7. Logo — optional

3. Credit amount — optional

8. Message area

4. [Info] — optional

9. Language menu buttons — optional

5. [Jug] button — optional

10. Clock — optional

Beverage selection

The main screen shows a selection of the most popular beverages. The available beverages are logically grouped in blocks. When more selections are available then can be displayed in a block, a [Scroll up/down] button with an arrow is displayed. Tap this button to show the other available beverage selections. Each beverage button contains a small impression of the beverage, the name and, when payment mode is activated, the price of the beverage. Tap a button to select a beverage.

Lower part of the screen

The lower part of the screen contains at least:
· Message area Relevant status information about the coffee machine is displayed in the message area. If more than one message must be displayed they are shown in sequence. Tap the [!] exclamation mark in front of the message to open the Message submenu (on page 30) to see all messages completely. Check the Message submenu (on page 30) for more details.
· Clock

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Displays the current time (as set in the coffee machine).

Optional

Depending on the model and configurations of the coffee machine the following options can be available:
· Credit amount — optional When payment mode is activated, the credit value is displayed. It is the total amount of money already entered for payment of a beverage.
· [Info] — optional Tap the [Info] button to open the Information submenu (on page 32) with more details about ingredients.
· [Jug] — optional Tap this button to open the Jug dispensing submenu (see Jug dispensing on page 37) with selections to fill complete jugs.
· [Number selection] — optional Tap this button to open the Number selection submenu for quick dispense of a beverage.
· Logo — optional
· Language — optional If more languages are available the screen shows a selection of language buttons. Tap on the desired language button to change the text on the screen to the selected language.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

3.2.1 Additional options submenu
The Additional options submenu is displayed after a beverage selection (cup or jug) is made on the Main menu (see Main menu – Cup dispensing on page 21).
· This submenu is not available if the (selected beverage on the) coffee machine is configured for direct dispense only.
· The options shown in the submenu depend on the selected beverage, some beverages will have no options at all.
· If a jug dispense is selected, the [Start] and [Cancel] buttons are available. If canister selection is possible this button bar is displayed.
Additional options submenu

1. [Canister selection] button bar — 7. Currently selected beverage

optional

8. [Cancel] button

2. [Strength] button bar — optional 9. Message area

3. [Add-on] button bar — optional 10. Credit amount — optional

4. [2nd Add-on] button bar — optional 11. [Start] button

5. [Cup size] button bar — optional

6. Price for this beverage — optional

Depending on the configuration additional options are displayed in the submenu. The following options are possible:
· Canister selection bar: to select an ingredient from a different canister after initial selection. For example, when coffee is selected, it is then possible to select the type of coffee from different canisters. The current selection is highlighted. Depending on configuration and availability of ingredients, a two or three options bar is shown. Tap the desired canister.
· Strength selection bar: to adjust the amount of coffee ingredient. The default strength is the middle button. The selected strength will be highlighted.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

tap a [LINE] button for the desired strength. More lines is more strength.
· Add-on selection bar: to add an extra ingredient, for example milk, to the selected coffee. The selected amount is highlighted. Tap the desired amount. [0] is no added ingredient (default). tap a [LINE] button for the desired amount of added ingredient. More lines is more ingredient.
· 2nd Add-on selection bar: to add another extra ingredient, for example sugar, to the selected coffee.
· Cup size bar: to select different cup sizes, a two or three options bar can be displayed. The current cup size selection is highlighted. Tap the desired cup size.
The remaining information on the screen:
· Price for the selected beverage. Only visible if payment is activated for the machine.
· The currently selected beverage. · The [Cancel] button. Tap to cancel the current selection and
return to the Main menu. · The Message area. Displays relevant messages of the coffee
machine. Tap the [!] exclamation mark button to open the Message submenu (on page 30). Details of all messages and possible solutions to solve simple issues are listed in the section Messages (on page 96). · Credit. Displays the amount already entered to pay for the selected beverage. Only visible if payment is activated for the machine. · The [Start] button. Tap this button to start the preparation of the beverage. The button is disabled if no full payment is made or if another problem is found that prevents the dispense. Check the displayed message(s) in the message area.

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3.2.2 Jug dispensing submenu

The Jug dispensing submenu is displayed after tapping the [Jug] button on the Main menu (see Main menu – Cup dispensing on page 21). On some models this menu is only available if the jug function is activated with a jug key or pin code.
Jug dispensing menu

1. [Jug selection] buttons 2. Credit amount — optional 3. Message area 4. [Cup mode] button
The menu shows the following information:
· The Jug dispensing submenu displays a number of selection buttons with beverages to fill (part of) a jug. Each button contains a small image with an impression of the beverage, the name and, when payment mode is activated, the price of the jug dispense. Tap a button to select a beverage.
· The Message area displays relevant messages of the coffee machine. Tap the [!] exclamation mark button to open the Message submenu (on page 30). Details of all messages and possible solutions to solve simple issues are listed in the section Messages (on page 96).
· The [Cup mode] button. Tap it to cancel the jug selection and return to the Main menu (see Main menu – Cup dispensing on page 21).

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3.2.3 Number selection submenu
The Number selection submenu is displayed when the [Number Selection] button is tapped on the Main menu (see Main menu Cup dispensing on page 21).
Number selection menu

1. Currently entered number selection 2. Actual beverage name 3. Beverage price in payment mode — optional 4. Credit in payment mode — optional 5. Numeric keypad with [0…9] buttons 6. [Cancel] button 7. Message area 8. [Start] button
The display shows the following information:
· The unique number entered for the selected beverage is visible in the small window.
· The actual name connected to the entered number. · Use the keypad to tap in the [number selection] of the
desired beverage.
NOTE The unique number that must be entered here is shown on the Dispense menu (see Dispense submenu on page 28) screen when a beverage is prepared.
· Tap the [Start] button to start the preparation and dispense of the beverage.
· Tap the [Cancel] button to exit the number selection and return to the Main menu.

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NOTE If payment is activated for this beverage and the credit amount is smaller than the price of the beverage the [Start] button is disabled until full payment has been made. The price for the selected beverage is shown and the credit amount already entered.
· The Message area displays relevant messages of the coffee machine. Details of all messages and possible solutions to solve simple issues are listed in the section Messages (on page 96).

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3.2.4 Dispense submenu

The Dispense submenu is shown during preparation and dispense of the beverage.
Dispense submenu

1 Progress indicator 2. Beverage name 3. Unique beverage code 4. [Stop] button
When the beverage is prepared / dispensed the display shows:
· An impression and/or the name of the beverage currently being prepared.
· An indicator showing the progress of the dispense of the beverage.
· The number displayed is the unique number for the beverage currently prepared. Use this number in the Number selection submenu (on page 26) — optional for quick dispense of the preferred beverage.
· The [Stop] button. Tap it to abort the current dispense and return to the Main menu (see Main menu – Cup dispensing on page 21).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

3.2.5 Ready submenu

The Ready submenu is shown when the coffee machine is finished with the dispense.
Ready submenu

1. Progress indicator 2. Message when dispense is finished 3. Unique number of prepared beverage 4. [Cancel] button
When the dispense is completed the display shows:
· A dispense progress indicator at 100% completed.
· the message ‘Ready, take your cup’ to indicate it is safe to remove the beverage (cup or jug).
· The unique number for the beverage that was prepared. Instead of using the selection and options screens to prepare the preferred beverage this unique number can be entered using the Number selection submenu (on page 26) — optional.
· The [Cancel] button. Tap it or remove the cup/jug to return to the Main menu (see Main menu – Cup dispensing on page 21).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

3.2.6 Message submenu

The Message submenu shows all relevant messages for this coffee machine in one screen. Tap the [!] exclamation mark button on any screen to open this Message submenu (on page 30). Details of all messages and possible solutions to solve simple issues are listed in the section Messages (on page 96).
Message submenu

1. [X] close button 2. List of all active messages
The message screen displays all active messages from the coffee machine.
· Tap the [X] button or tap somewhere in the message area to return to the previous menu.

There are three levels of messages

· display only messages, e.g. ‘Install drip tray (see Message: Install drip tray on page 99)’. When this message is displayed the coffee machine continues to work, even without the drip tray.
· disable dispense messages, e.g. ‘Insert coins (see Message: Insert coins on page 99)’. When this message is displayed the coffee machine is fully functional except for the dispense. In this case the [Start] button will be enabled after full payment is made.
· disable selections messages, e.g. ‘Water level 2 too low’. When this message is displayed some or all beverage selection buttons are disabled. When the boilers are filled and the water level is correct the message is removed and the selection buttons are enabled.

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Details of all messages and possible solutions to solve simple issues are listed in section Messages (on page 96).

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3.2.7 Information submenu

The Information submenu is displayed after tapping the [Info] button on the main menu screen. It shows details about the ingredients or the coffee machine.
Information submenu

1. Customized information 2. [Cancel] button
The customized information image shows details about the beverage or coffee machine and is defined for every available language (for example: Food allergy warnings).
Tap the [Cancel] button to return to the Main menu.

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4
Using the coffee machine

4.1 Before use

Transportation, installation and adjustment of the machine is specialized work. Only properly trained service personnel should carry this out. Instructions about transportation, unpacking, and installation of the machine can be found in the Technical manual.

Switch on the coffee machine Perform the steps described in the procedure Switch on the machine (see Switch on on page 45).

Fill up the ingredient canisters Perform the steps described in the procedure Fill up the ingredient canisters (on page 90).

Connect the Fresh Milk system Perform the steps described in the procedure Connect the Fresh Milk system (see Connect the fresh milk system — optional on page 50).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

4.2 Procedures
4.2.1 Select a beverage

NOTE If the Main menu (see Main menu – Cup dispensing on page 21) is not shown, tap on the screen somewhere or place a cup on the cup stand.
NOTE If the button [Place cup and press here] is shown, first perform a rinse procedure. (see Scheduled rinse on page 48)

Procedure

Perform the following steps:
1. Tap the desired [language] button on the screen (optional). The screen will change to the selected language.

TIP The selected language will remain active until the beverage is dispensed.

2. Adjust the height of the coffee outlet to the size of the cup/ jug.
3. From the Main menu (see Main menu – Cup dispensing on page 21) select one of the following:
To fill a single cup using the selection menus continue with the procedure Cup dispensing (on page 35).
To (quickly) fill a single cup using pre-set ingredients continue with the procedure Cup dispensing by number — optional (on page 36).
To fill (part of) a jug continue with the procedure Jug dispensing (on page 37).

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

4.2.1.1 Cup dispensing

Procedure

Perform the following steps:
1. Tap the desired beverage button from the selections on the Main menu (see on page 21).
or first tap one of the [Scroll Up/down] buttons and then select the desired beverage.
2. The Additional options submenu (on page 23) with the selected beverage is shown.
3. When available and needed, tap one or more of the desired options to make additional changes.
4. Place a cup under the correct outlet.
For hot water, place the cup on the left side below the hot water outlet.
For all other dispenses, place the cup in the middle, below the main outlet.
5. Tap the [Start] button to prepare the beverage.
or tap [Cancel] to return to the Main menu (see on page 21).
when payment mode is activated, full payment is needed first to enable the [Start] button. Check the payment (on page 39) section for more details.
6. The Dispense submenu (see on page 28) is now shown and the beverage is prepared.
or tap the [Stop] button to interrupt and stop the dispense.
7. When the dispense is finished the Ready submenu (on page 29) is shown.
do not remove your cup before the message ‘Ready, take your cup (see Message: Ready, take your cup on page 104)’ is visible. The message will remain visible on the screen until the cup is removed.
To add an additional beverage to the same cup, do not remove the cup but tap the [Cancel] button and select the next beverage.
8. The prepared drink is ready.

WARNING Hot liquid can leak from the outlet nozzle after the dispense is finished.

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4.2.1.2 Cup dispensing by number — optional
Each beverage with specific strength and/or added ingredients has its own code. Instead of entering all selections, this code can be used to dispense the beverage more quickly with required strength and additional ingredients.
NOTE This procedure is optional and only available if the [Number Selection] button is available on the Main menu.

Procedure

Perform the following steps:
1. Tap the unique [number] of the desired beverage on the keypad displayed on the screen.

NOTE The actual number that needs to be entered here is shown on the Dispense menu (see Dispense submenu on page 28) screen when the beverage is prepared / during dispense.

2. Tap the [Start] button to prepare the beverage.
or tap [Cancel] to return to the Main menu (see on page 21).
when payment mode is activated, full payment is needed first to enable the [Start] button. Check the payment (on page 39) section for more details.
3. The Dispense submenu (see on page 28) is now shown and the beverage is prepared.
tap the [Stop] button to interrupt and stop the dispense. 4. When the dispense is finished the Ready submenu (on page
29) is shown.
do not remove your cup before the message ‘Ready, take your cup (see Message: Ready, take your cup on page 104)’ is visible. The message will remain visible on the screen until the cup is removed.
To add an additional beverage to the same cup, do not remove the cup but tap the [Cancel] button and select the next beverage.
5. The prepared drink is ready.
WARNING Hot liquid can leak from the outlet nozzle after the dispense is finished.

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4.2.1.3 Jug dispensing

Purpose When configured it is possible to fill complete jugs at once. On some models this option is available after activation with a jug key or pin code.

Procedure

Perform the following steps:
WARNING The outlet of the machine may occasionally drip hot liquid even when the machine is not in use. When hot liquid comes in contact with a person, this can lead to serious scalding injuries.
1. For hot water place the jug on the left side below the hot water outlet.

WARNING If jugs are not correctly placed, the machine can spill hot liquid down the front. This can cause serious scalding injuries.

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2. For all other dispenses place the jug in the middle below the main outlet.
3. If the jug submenu is not visible tap the [Jug] button from the main menu (see Main menu – Cup dispensing on page 21).
4. Tap the desired beverage and jug filling from the shown selection buttons. or tap the [Cup mode] button to return to the Main menu
5. Tap the [Start] button to start the dispense. tap the [Cancel] button to return to the Main menu (see Main menu – Cup dispensing on page 21). when payment mode is activated, full payment is needed first to enable the [Start] button. Check the payment (on page 39) section for more details. if the [Start] button is disabled check the Message area for more details.
6. The Dispense submenu (see Dispense submenu on page 28) is now displayed. tap the [Stop] button to interrupt and stop the dispense.
7. When the dispense is finished the Ready submenu (on page 29) is shown. do not remove your cup/jug until the message “Ready, take your cup (see Message: Ready, take your cup on page 104)” is shown. the message will remain visible on the screen until the cup/jug is removed. to add an additional beverage to the same cup/jug tap the [Cancel] button.
CAUTION – Hot liquid can leak from the outlet nozzle after the dispense is finished.
8. The filled jug is ready.

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4.2.2 Payment

Purpose If the coffee machine is activated for payment, the cup or jug dispense will only start after full payment is made.

Procedure

Perform the following steps:
1. The price for the dispense of the selected cup / jug is shown on the screen.
2. Make the full payment. The entered credit amount is calculated and shown on screen.

NOTE The [Start] button will remain disabled until full payment is made.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5
Preventive maintenance
5.1 Food safety engagement
Food safety and quality are important for both customer and those who work in the vending industry. Respecting a number of basic principles, such as personal hygiene, is essential. We therefore advise you to follow the advice given in “A hygiene guide for vending”. This guide is published by the European Vending and Coffee Association and has been prepared to help ensure that a hygienic product is delivered to the customer on every occasion.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.2 Preventive maintenance schedule
NOTE Skipping maintenance can affect the quality of the dispensed drink and may lead to malfunctioning of the machine. Clean the coffee machine at the end of the day and before the machine is switched off for a longer period.

The schedule below gives an overview of all procedures needed to maintain the coffee machine.

Preventive maintenance schedule CoEx (XL) brewer (Nio model)

Cleaning procedures for the coffee machine with intervals Scheduled rinse (on page 48) Flush mixers and brewer (on page 49) Clean the fresh milk system — optional (on page 54)

D WMH X X X

Remove and clean the fresh milk parts — optional (on page 56) (2)

Clean the mixing system and all hoses (on page 66)

Remove and clean the brewer (on page 72)

Clean brewer with cleaning tablet (on page 78)

Clean waste bucket (on page 60)

Clean the drip tray (on page 64)

Clean the waste bin in the base cabinet (on page 62)

Clean the cold water outlet nozzle — optional (on page 87)

Deep clean the cold water outlet nozzle — optional (on page 88)

General Cleaning cold water system (1)

Sanitization cold water system (1)

Clean the canisters (on page 85)

Fill up the ingredient canisters (on page 90)

Enter canister ingredient levels — optional (on page 91)

Clean the outside of the machine (on page 92)

Clean the touchscreen (on page 93)

(1) Cold water specific cleaning procedures must be performed by a certified dealer and are not explained in this end user manual.
(2) For Fresh Milk models only: we recommend to renew the milk frother and milk hose -from milk pump to milk container and frother- once a year.

Interval column codes

Daily

Weekly

Monthly

Every 6 months

NOTE Increase the brewer cleaning frequency, if the coffee machine dispenses a lot of coffee related beverages every day.

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5.3 Daily maintenance
Purpose Performing daily maintenance will ensure the quality of your beverages and a proper operation of the machine.
Procedure For daily maintenance follow these steps: 1. Flush mixers and brewer (on page 49). 2. Clean the fresh milk system — optional (on page 54). 3. Clean waste bucket (on page 60). 4. Clean the drip tray (on page 64). 5. Clean the waste bin in the base cabinet (on page 62). 6. Fill up the ingredient canisters (on page 90). 7. Enter canister ingredient levels — optional (on page 91). 8. Clean the outside of the machine (on page 92). 9. Clean the touchscreen (on page 93). 10. Check correct functioning by taking a test beverage.
Each step is described in detail in the next sections.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.4 Weekly maintenance
Purpose Performing weekly maintenance will ensure the quality of your beverages and a proper operation of the machine.
TIP A hygiene kit is delivered with the machine. Using the hygiene kit parts, the cleaning can be done after the machine has been put in operation again with the parts from the kit.
Procedure For weekly maintenance follow these steps:
1. Open the door (on page 45) of the machine. 2. Clean the mixing system and all hoses (on page 66). 3. Clean the fresh milk system — optional (on page 54). 4. Remove and clean the fresh milk parts — optional (on page
56). 5. Remove and clean the brewer (on page 72). 6. Clean brewer with cleaning tablet (on page 78). 7. Clean waste bucket (on page 60). 8. Clean the drip tray (on page 64). 9. Clean the waste bin in the base cabinet (on page 62). 10. Clean the cold water outlet nozzle — optional (on page 87). 11. Fill up the ingredient canisters (on page 90). 12. Enter canister ingredient levels — optional (on page 91). 13. Close the door (on page 45). 14. Clean the outside of the machine (on page 92). 15. Clean the touchscreen (on page 93). 16. Check correct functioning by taking a test beverage. Each step is described in detail in the next sections.
NOTE Increase the brewer cleaning frequency, if the coffee machine dispenses a lot of coffee related beverages every day.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.5 Monthly maintenance
Purpose Performing monthly maintenance will ensure the quality of your beverages and a proper operation of the machine.
Procedure For monthly maintenance follow these steps:
1. Open the door (on page 45) of the machine. 2. Clean the mixing system and all hoses (on page 66). 3. Clean the fresh milk system — optional (on page 54). 4. Remove and clean the fresh milk parts — optional (on page
56). 5. Remove and clean the brewer (on page 72). 6. Clean brewer with cleaning tablet (on page 78). 7. Clean waste bucket (on page 60). 8. Clean the drip tray (on page 64). 9. Clean the waste bin in the base cabinet (on page 62). 10. Deep clean the cold water outlet nozzle — optional (on page
88). 11. Clean the canisters (on page 85). 12. Fill up the ingredient canisters (on page 90). 13. Enter canister ingredient levels — optional (on page 91). 14. Close the door (on page 45). 15. Clean the outside of the machine (on page 92). 16. Clean the touchscreen (on page 93). 17. Check correct functioning by taking a test beverage.
Each step is described in detail in the next sections.
NOTE Increase the brewer cleaning frequency, if the coffee machine dispenses a lot of coffee related beverages every day.

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5.6 Preventive maintenance procedures

5.6.1 Switch on

Procedure

Perform the following steps:
1. Turn on the water supply. 2. Connect the power cord to the power mains socket. 3. Switch the [ON/OFF] power switch, on the rear side of the
machine, to the ON position. 4. The coffee machine will start up. 5. The main screen is displayed with the message ‘filling boiler’
and then ‘heating boilers’ in the message area (see on page 21) on the screen. 6. After a few minutes the message ‘heating boilers’ disappears and the machine is ready for use.

5.6.2 Open the door

Procedure

Perform the following steps:
1. Insert the key in the lock of the door of the coffee machine. 2. Turn the key 90 degrees. 3. Open the door.
Use the hot water outlet to pull open the door. The Service menu is displayed on the screen.

NOTE Do not leave the door open unattended to prevent unauthorized access to the inside of the machine.

5.6.3 Close the door

Procedure

Perform the following steps:
1. Insert the key in the lock of the door of the coffee machine. 2. Turn the key 90 degrees.

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3. Close the door. 4. Turn the key 90 degrees to lock the door. 5. Remove the key and store it in a safe place.
NOTE Always remove the key from the coffee machine to prevent unauthorized opening of the door.
6. (Optional) Leave the Service menu: tap the [Exit] button and then the [Close door and press here to quit service] button to return to the main menu.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.6.4 Switch off / Putting out of order

Procedure

Perform the following steps:
1. Switch the [ON/OFF] power switch, and the rear side of the machine, to the OFF position.
· If the coffee machine is not used for a longer period of time (more than one week) it is recommended to:
perform a daily (see Daily maintenance on page 42) maintenance cleaning procedure or, if the machine is not used for a longer time it is recommended to perform a monthly (see Monthly maintenance on page 44) maintenance procedure.
turn off the water supply. switch off the power supply (pulling the plug from the wall
socket is sufficient). This will also prevent unnecessary use of energy.
See also section: Extended down time (on page 14).

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5.6.5 Scheduled rinse

Purpose

Cleaning the coffee machine can be skipped or forgotten. The scheduled rinse is forced every day using a scheduler. When activated follow the procedure below to perform the rinse. Instead you can also run the daily maintenance (on page 42) or weekly maintenance (on page 43).

Required Use the following parts to perform the procedure: · A rinsing tub.

Interval

Perform this procedure:
· Daily (see Daily maintenance on page 42), announced on screen.

Procedure

Perform the following steps:
1. Place a rinsing tub underneath the outlet nozzle to collect the rinse water.
2. Tap the button [Place cup and press here] on the screen. Hot water from the boiler flows through mixers and brewer.
3. A progress screen is shown. Wait until the rinse procedure is finished. Total time to rinse is 1 to 2 minutes.
4. Remove the rinsing tub. 5. The machine returns to the Main menu (see Main menu – Cup
dispensing on page 21) and is ready for use.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.6.6 Flush mixers and brewer

Purpose The Rinse process flushes hot water through the mixers and the brewer to remove any residue.

Required Use the following parts to perform the procedure: · Rinsing tub.

Interval

Perform this procedure:
· At least Daily (see Daily maintenance on page 42), more if needed.

Total time · Total time needed to rinse is 1 to 2 minutes.

Procedure

Perform the following steps:
1. Press and hold the [logo] at the bottom of the screen for about 5 seconds to enter the Service menu.
2. Place a rinsing tub underneath the outlet nozzle to collect the hot waste water.
3. Tap the [Rinse] button from the Service menu. Hot water from the boiler flows through the mixers and brewer.
4. Repeat the previous step until clean water comes out of the machine.

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5.6.7 Connect the fresh milk system — optional

Purpose If your coffee machine is equipped with the fresh milk option, the fresh milk system needs to be connected before use.

Interval Perform this procedure: · Once, after installation of the coffee machine.

Procedure

Perform the following steps:
1. Slide the adjustable outlet to the top position. 2. Remove the waste bucket / waste guide.
check the first steps in the section Clean waste bucket (on page 60) for more details.

3. Slide the adjustable outlet down again.

4. Push the lock pin on the right hand side of the adjustable outlet and catch the milk frother.

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5. Remove the cover from the milk pump unit.

6. Connect the milk hose to the two pump connections. Make sure the text ‘UP’ on the hose is visible from the top side.
7. Route the inlet part of the hose through the hole in the refrigerator.

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8. Route the outlet part through the hole in the right side of the coffee machine.
9. Connect the hose to the milk frother.
10. Mount the milk frother assembly by moving it upward in the locking mechanism of the adjustable outlet.

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11. Slide the adjustable outlet down to the bottom position.
12. Gently pull the hose and route the milk hose into the slot at the bottom of the right hand part of the outlet bracket.
13. In the refrigerator, open the milk container and insert the milk hose in the container. Only use UHT (Ultra High Temperature = pasteurized) milk.
14. Close the refrigerator.

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5.6.8 Clean the fresh milk system — optional

Purpose

If your coffee machine is equipped with the fresh milk option,the milk system should be cleaned daily. For best results clean the milk system at the end of the day so that no milk will remain in the system over night or during the weekend.

Required

· Milk system cleaning liquid. · A jug (minimum 0.6l). · A rinsing tub. · A soft damp cloth.

Interval Perform this procedure:
· Daily.
NOTE For best results, clean the milk system at the end of the day so that no milk will remain in the system over night or during the weekend.

Procedure

Perform the following steps:
1. Prepare a solution of 30ml milk system cleaner with half a liter cold water in a jug.
2. Open the refrigerator, take the milk tube from the milk container and place it in the jug with the cleaning solution.
3. Press and hold the [logo] at the bottom of the screen for about 5 seconds to enter the Service menu.

TIP Another way to enter the Service menu is to open and close the door.

4. Tap the [Cleaning program milk system] button on the screen and follow the instructions on the screen.
5. Place a rinsing tub under the outlet.
6. Tap the [Press HERE to start the cleaning] button on the screen.
The cleaning solution will be pumped through the milk system into the rinsing tub.
7. When instructed by the screen, clean the jug and fill it with clean cold water.
8. Place the milk tube in the jug again.
9. Tap the [Press HERE to continue the cleaning] button on the screen.
The system will be rinsed out with clean water.

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10. Wait until the service menu is shown again. Take the milk tube from the jug and place it in the milk container.
11. Close the refrigerator.
12. Tap the [Exit] and the [Close door and press here to quit service] button to return to the main menu.

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5.6.9 Remove and clean the fresh milk parts — optional

Purpose

If your coffee machine is equipped with the fresh milk option, in addition to the daily cleaning of the fresh milk system (described in the previous chapter), the fresh milk parts should be removed and cleaned weekly.

Required

· Hygiene kit with internal maintenance parts. · Milk system cleaning liquid. · A jug (minimum 0.6l). · A rinsing tub. · A soft damp cloth.

Interval Perform this procedure: · Weekly.

Procedure

3. Slide the adjustable outlet down again.

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4. Push the lock pin on the right hand side of the adjustable outlet and catch the milk frother.
5. Pull the hose (1) from the milk frother and push (2) the milk frother out of the holder.

6. To clean, disassemble the milk frother: Pull the outlet part (right) from the middle part (pull before turning as it is locked with a small positioning tab). Pull the steam inlet (left) from the middle part (pull before turning as it is locked with a small positioning tab).
TIP Using the hygiene kit parts the cleaning can be done after the machine has been put in operation again with the parts from the kit.
7. Prepare a solution of 30ml milk system cleaner with half a liter cold water in a jug and immerse all remove parts.
8. After 4 hours, clean all parts thoroughly with a brush and clean water. Make sure all residues are removed.

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9. Assemble the milk frother in reverse order and make sure to position the small positioning tabs (see insets) into the corresponding openings.
10. Place the milk frother in the holder and connect the hose to the milk frother.
11. Mount the milk frother assembly by moving it upward into the locking mechanism of the adjustable outlet.

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12. Slide the adjustable outlet down to the bottom position.
13. Gently pull the hose and route the milk hose into the slot at the bottom of the right hand part of the outlet bracket.
14. Place the waste bucket / waste guide.

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5.6.10 Clean waste bucket

Purpose

After every dispense, coffee residue, so called coffee cakes are moved into the waste bucket. Excess water from the brewer is also captured in the waste bucket. If an external waste bin is used, the waste bucket is replaced by a waste guide.

Interval Perform this procedure: · Daily (see Daily maintenance on page 42).

Procedure

Perform the following steps:
1. Slide the adjustable outlet to the top position. 2. Depending on the used bucket types:

B) Remove the waste bucket from the machine, or G) First remove the drip tray and then remove the waste
guide from the machine. 3. Rinse the removed parts with clean warm water. 4. Dry the parts completely. 5. Install the waste bucket / waste guide:

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B) Slide the waste bucket into the machine, or
G) First place the waste guide inside the machine and then place the drip tray.

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5.6.11 Clean the waste bin in the base cabinet

Purpose

If waste bins in a base cabinet (or other external cabinet) are installed, excess water from the brewer and waste water from the drip tray is captured in the left waste bin and coffee residue in the right waste bin. Both bins must be cleaned regularly.

NOTE If a fixed waste water connection is used, a waste water bin is not installed.

Interval

Perform this procedure:
· Weekly (see Preventive maintenance schedule on page 41) or more if needed.

Procedure

Perform the following steps:
1. Remove the waste bin(s) from the base cabinet. 2. Rinse the removed bin(s) with clean warm water. 3. Dry the bin(s) completely.

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4. Place the waste bin(s) in the base cabinet.
5. When used, make sure that the sensor for the waste water level is placed inside the left waste water bin.

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5.6.12 Clean the drip tray
Purpose The drip tray collects waste water from the coffee machine and waste water during the dispense of products and must be cleaned regularly.
Interval Perform this procedure: · Daily (see Daily maintenance on page 42).
NOTE If the drip tray is connected to a larger waste bin or directly to the main waste water disposal the cleaning interval can be lowered to once a week.

Procedure

Perform the following steps:
1. Pull the drip tray, including drip grid, in the direction of the arrow and remove it from the machine.

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2. Rinse the drip tray (separate the parts first) in warm water. 3. Install the drip tray and the grid.

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5.6.13 Clean the mixing system and all hoses

Purpose To prevent clogging of ingredients the mixers and all hoses must be removed from the coffee machine and cleaned.

Interval Perform this procedure: · At least once a week (Weekly maintenance (on page 43)).

Procedure

Perform the following steps:
1. When available, remove the add-on water hose from the dispense nozzle.

2. Release the brewer hose from the dispense nozzle (1) and pull it out of the hose support (2).

3. If the machine contains mixers, pull the hoses from the mixers and from the dispense nozzle.

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4. Push the dispense nozzle from below (1) to lift it from the adjustable outlet (2) and remove the small lid from the dispense nozzle.
5. Remove the adjustable outlet. 6. If the machine does not contain mixers, continue with step
13.
7. Remove the canister outlets from the canisters.
8. Turn the bayonet catches counterclockwise (approx. 10º).

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9. Pull the mixer houses in the direction of the arrow and remove them from the machine.
10. Remove the exhaust drawers. Clean the area around the exhaust drawers from any residue with a dry brush.
11. Pull the mixer propellers in the direction of the arrow (1) and away from the mixer shaft. Use a teaspoon (2) to loosen the propellers from the locking.
12. Remove the bayonet catches. 13. Rinse all removed items, including the hoses, in warm water. 14. If the coffee machine does not contain mixers, skip the next
steps and continue with step 21.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

15. Clean the parts of the mixing system that remain in the machine with a dry brush. NOTE Make sure all parts are dry before you continue with the installation of the mixing system.
TIP When using the parts from the hygiene kit, this can be done immediately after the machine has been put in operation again.
16. Install the exhaust drawers. CAUTION Make sure the exhaust drawer is completely dry before installing it.
17. Install the mixer propellers. TIP Turn the propeller around to ‘find’ the fit on the flat side in the mixer motor shaft and then push until the propeller locks.
18. Install the bayonet catches and turn them 10º clock wise.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

19. Place the mixer houses. 20. Turn the bayonet catches another 10º clock wise to lock the
mixers.
21. Place the adjustable outlet.
22. Lower the brewer hose in the hose support and push the hose down (1) to secure it.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

23. Connect the brewer hose to the dispense nozzle (1), place the small lid (2) and if the machine contains mixers, connect the mixer hoses to the nozzle (3).
24. Place the dispense nozzle in the adjustable outlet.
25. If the machine contains mixers, connect the hose ends, marked L and R to the left and right mixer.
26. When available, insert the add-on water hose in the dispense nozzle.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

5.6.14 Remove and clean the brewer
Purpose For full cleaning with water, the brewer must be removed from the coffee machine. The brewer bracket must be checked and cleaned to prevent malfunctioning of the brewer.
WARNING Do not take the brewer itself apart. Only properly trained personnel may work on the brewer itself. Instructions for performing work on the brewer itself is found in the technical manual.
NOTE Even if the coffee machine does not contain a mixer, to make sure the brewer hoses and dispense nozzle are cleaned, always perform the cleaning procedure of the mixers (see Clean the mixing system and all hoses on page 66).
Required Use the following parts to perform the procedure: · Pipe brush cleaner.
Interval Perform this procedure: · At least once a week, increase the frequency if needed.
Procedure Perform the following steps: 1. Turn the outlet bracket to the right to remove the brewer.

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2. Remove the coffee funnel. 3. Remove the brewer outlet from the brewer.

4. Remove the internal brewer drip tray.

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5. Locate the fixation handle on the brewer.
6. Push the fixation handle upwards and, while keeping the handle in the upward position, pull and lift the brewer in the direction of the arrow out of the coffee machine.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

7. Make sure the brewer bracket in the coffee machine is clean; clean the water connection (A) and the motor coupling (B).
8. Rinse the brewer and the other removed parts with clean warm water.
9. Remove any residue inside the brewer outlet pipes with a small pipe brush cleaner.

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

10. Place the brewer on the bracket and push the brewer firmly in the bracket until you hear a click. Make sure that the fixation handle is in the down position. CAUTION When the brewer is not installed correctly, the brewer can cause errors or jump out of the bracket seating during a brew cycle.
11. Install the Brewer outlet. To prevent leaking make sure the CoEx outlet (see inset) is pushed completely on the outlet pipes of the brewer head.

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12. Place the internal drip tray. 13. Install the coffee funnel. 14. Turn the outlet bracket to the normal position.

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5.6.15 Clean brewer with cleaning tablet
NOTE Failure to clean the brewer with the recommended cleaning tablet available from the manufacturer will void the warranty on related parts. Not cleaning the brewer can cause the machine to malfunction! Our advice is to do this at least once a week. If you suffer from clogged filter heads, we advise you to increase the frequency.

Purpose Cleaning of the brewer with a cleaning tablet removes all coffee residue.

Required

Use the following parts to perform the procedure:
· Cleaning tablet. · Rinsing tub. · Protective clothing, gloves and safety glasses. · Green service key.

Interval Perform this procedure:
· At least once a week, increase the frequency if needed.
NOTES · Total time for the cleaning cycle is 8 minutes. · A message is shown if the brewer is not cleaned after 7 days. · A message is shown and coffee dispense is disabled if the brewer is not cleaned after 9 days.

Procedure

Perform the following steps:
1. Press and hold the [logo] at the bottom of the screen for about 5 seconds to enter the Service menu. or open and close the door of the machine.
2. In the Service menu tap the [Brewer cleaning cycle] button.

NOTE Depending on model the button text can be different.

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Follow the instruction shown on-screen and described in the next steps.
3. Insert a cleaning tablet through the pill entry (left side of the machine) in the brewer. WARNING Wear protective clothing, gloves and safety glasses when working with cleaning tablets.

4. Place a rinsing tub underneath the outlet nozzle. 5. In the Service menu tap the button [Start the cleaning
cycle]. Wait until the cleaning cycle is completely finished. 6. Remove and empty the rinsing tub.

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5.6.16 Unblock the grinder

Purpose

Occasionally small twigs or small rocks (known as foreign objects) are in between the fresh beans. The grinder will stop if these objects are blocking the grinder. A message ‘Grinder blocked’ (see Message: Grinder blocked on page 98) is displayed in the warning message area.

Procedure

To unblock the grinder perform the following steps:
1. Locate the grinder that needs cleaning up. 2. Remove the canister to get access to the grinder.

NOTE Check the section Fill the bean canister for details about the removal of the canisters.When the canister is removed the grinder itself is visible.

Grinder type

Determine the grinder type.
1. If the coffee machine contains a grinder, one of two grinder types are possible:
D) the D-grinder, recognizable by the grinder top house that can be removed or
S) the original Schaerer grinder, that contains a gear-like top.
If the machine contains a D-grinder continue the cleaning procedure with step 5. Cleaning the Schaerer grinder is described in the next steps.

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2. To clean the Schaerer grinder, lift and remove the grinder from the grinder base.
CAUTION The grinder is filled with beans and ground coffee. When the grinder house is turned upside down, coffee beans and ground coffee can fall out.
3. Keep the grinder upside down. Turn the squared top inside the geared wheel at the top side, or the shaft at the bottom side, back and forth repeatedly to loosen and remove the foreign objects.
NOTE The shaft should rotate easily if nothing is blocking the grinder.
4. Place the grinder back into the grinder base and continue with step 12.
TIP If needed, rotate the squared top a little to allow the ribbed shaft to fit the grinder motor and is fully lowered inside the grinder base.

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5. To clean the D-grinder, lift and remove the grinder from the base.
6. Pull out the clips of the grinder outlet (1), slide the outlet from the grinder house (2) and remove it from the grinder.

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7. Loosen the bayonet locked grinder house top in the direction of the arrow and remove it from the grinder.
8. Clean both grinder discs and the inside of the grinder house.
9. Place the grinder house top assembly, and turn it in the direction of the arrow to lock.

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10. Slide the outlet on the grinder house in the direction of the arrow. Make sure the clips lock properly.
11. Place the grinder back into the grinder base. 12. Place the canister back.
TIP Check the last steps of section Fill the bean canister for more details. 13. Close the door and lock with the key. 14. Leave the Service menu. TIP Dispense two cups of coffee to fill up the grinder with fresh coffee and throw the contents of the cups away. 15. Check correct functioning by taking a test coffee.

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5.6.17 Clean the canisters

Purpose All ingredients leave residue inside the canister. To clean the canisters they need to be removed from the machine.

Interval Perform this procedure: · at least once a month.

Procedure

Perform the following steps:
1. Open the door (on page 45). 2. Remove the coffee funnel.

3. Pull the canister outlets of the ingredient canisters in the direction of the arrow and remove them from the machine.

4. Remove the canisters from the machine: Bean canisters: pull the sliding locking handle (1) towards you and lift the canisters out of the machine. Ingredient canisters: push the snap lock (2) of the ingredient canisters to unlock and lift the canisters out of the machine.
5. Unlock (optional) and remove the lids from the canisters. 6. Empty the canisters. 7. Clean the canisters with warm water.
NOTE Use a mild detergent if warm water only is not sufficient.

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8. Dry the canisters thoroughly on the inside and outside. WARNING Do not fill the canisters until they are completely dry. The product may form lumps which makes the system unusable.
9. Fill the canisters with ingredients according to the text labels.
10. Place the canisters in the machine. Bean canister: place the canister and push (1) the locking slider to lock the canister onto the grinder base. Ingredient canister: place the ingredient canister in the correct location (marked on the text labels) and make sure the lock (2) snap into place.
11. Place the canister outlets on the ingredient canisters and point them towards the correct mixer bowl.
12. Install the coffee funnel.

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5.6.18 Clean the cold water outlet nozzle — optional

Purpose The cold water outlet nozzle must be cleaned regularly to prevent bacteria growth.

Required

Use the following parts to perform the procedure:
· Multi purpose, disposable cloth. · Cleaning agent. · Disposable paper towels. · Rinsing tub or 1 liter jug. · Protective clothing, gloves and safety glasses.

NOTE Do not use aggressive cleaning products or abrasives to clean (parts of) the machine.

Interval

Perform this procedure:
· Weekly (see Weekly maintenance on page 43), more if needed (depending on machine usage and environmental conditions).

Procedure Perform the following steps:
WARNING Wear protective clothing, gloves and safety glasses when working with cleaning chemicals.

1. Use the cloth to apply the cleaning agent. Submerge a clean cloth into the cleaning agent (concentration recommended by cleaning agent manufacturer’s instructions). Remove the cloth and remove excess water.
2. Clean the cold water outlet nozzle wiping the cloth over the entire area re-submerging the cloth as necessary.
3. Rinse the cloth in clean warm water and wipe off excess cleaning agent residue and soil.
4. Dry cold water nozzle using disposable paper towels.
5. Close the door of the coffee machine.
6. Place a rinse tub below the cold water outlet nozzle.
7. Leave the Service menu: tap the [Exit] button and then the [Close door and press here to quit service] button to return the main menu.
8. Select a full jug of cold water and dispense at least 1 liter of cold water and ensure any cleaning residue is flushed out.

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5.6.19 Deep clean the cold water outlet nozzle — optional

Purpose The cold water outlet nozzle must be cleaned and disinfected regularly to prevent bacteria growth.

Required

Use the following parts to perform the procedure:
· Multi purpose, disposable cloth. · Cleaning agent. · Protective clothing, gloves and safety glasses. · Disinfectant solution. · Disposable paper towels. · Rinsing tub or 1 liter jug. · Brush.

NOTE Do not use aggressive cleaning products or abrasives to clean (parts of) the machine.

Interval

Perform this procedure:
· Monthly (see Monthly maintenance on page 44), more if needed (depending on machine usage and environmental conditions).

Procedure Perform the following steps:
WARNING Wear protective clothing, gloves and safety glasses when working with cleaning chemicals.

1. Submerge a clean cloth in warm water. Pre clean the cold water outlet nozzle using the cloth.
2. Submerge a clean cloth into the cleaning agent (concentration recommended by cleaning agent manufacturer’s instructions). Remove the cloth and remove excess water.
3. Clean the cold water outlet nozzle wiping the cloth over the entire area re-submerging the cloth as necessary.
4. Using a brush, brush around the cold water nozzle to dislodge any dried on soil. Remove the soil with a cloth.
5. Soak a clean disposable cloth in clean warm water and rinse the outlet nozzle until all soil and cleaning agent residues are removed.
6. Soak a clean disposable cloth in disinfectant solution, ensure that the whole area is wiped.
7. Leave for 10 minutes.

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8. Rinse off disinfectant using disposable cloth in clean warm water.
9. Dry cold water nozzle with disposable paper towels.
10. Close the door of the coffee machine.
11. Place a rinse tub below the cold water outlet nozzle.
12. Leave the Service menu: tap the [Exit] button and then the [Close door and press here to quit service] button to return the main menu.
13. Select a full jug of cold water and dispense at least 1 liter of cold water and ensure any cleaning residue is flushed out.

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5.6.20 Fill up the ingredient canisters
Ingredient canisters can be filled without opening the door of the coffee machine. The canisters can remain in the machine during filling.
NOTE · Make sure that the canisters remain filled with a layer of at least 4 cm of product. · Only use ingredients recommended by the supplier of the machine. · Each canister is intended for a specific ingredient that is shown on a text label on the canister.

Purpose To prevent that the machine can no longer dispense drinks due to a lack of ingredients, the machine must be refilled in time.

Required · Ingredients.

Procedure

Perform the following steps:
1. (Unlock — optional) and remove the lid of the canister. 2. Fill the canister with the ingredient indicated on the canister.

TIP Do not fill the canisters more than necessary for one or two days. This will keep the products fresh.

3. Place the lid back on the canister (and lock — optional).

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5.6.21 Enter canister ingredient levels — optional

Purpose

When activated the coffee machine displays a message on the screen when the ingredient canisters are almost empty. Based on the number of beverages taken, the machine calculates the amount of ingredients left in the canisters. When the canisters are filled up the counters must be reset. Follow the steps in the procedure below to reset the counters.

Interval

Perform this procedure:
· When this option is active the Enter ingredient level screen is displayed when the [Exit] button is tapped in the Service menu to return to the Main menu (see Main menu – Cup dispensing on page 21).

Procedure

Perform the following steps:
1. When the [Exit] button is tapped to leave the Service menu the Enter ingredients levels screen is displayed. The current filling level of each canister is displayed (only the canisters activated for this option are shown).
2. To change a canister filling level tap one of the ingredient buttons in the left column. or tap the [Exit] button to leave the Service menu.

3. Tap the correct [filling level %] button for the selected canister.
NOTE A completely filled canister is filled 100 %. To keep ingredients fresh it is also possible to fill the canister for 50%.
4. Repeat the steps for each canister that is filled up (or where the shown value is not correct) or tap [Exit] to leave the Service menu.

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5.6.22 Clean the outside of the machine
Purpose To clean all outside areas of the coffee machine that are not cleaned in any other procedure.
Required Use the following parts to perform the procedure: · Soft damp cloth.
Interval Perform this procedure: · Daily (see Preventive maintenance schedule on page 41),
Procedure Perform the following steps: 1. Clean the outside of the machine with a soft damp cloth. NOTE Do not use aggressive cleaning products or abrasives to clean (parts of) the machine.

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5.6.23 Clean the touchscreen

Purpose The touchscreen is the main interface between user and coffee machine. To ensure a hygienic and flawless use, the touchscreen must be cleaned regularly.

Required

Use the following parts to perform the procedure:
· A clean soft cloth for disinfection purposes. · (Isopropyl) alcohol.

Interval

Perform this procedure:
· At least Daily (see Daily maintenance on page 42). · When announced on screen, after a defined number of
dispensed beverages.

Procedure

Perform the following steps:
1. Tap one of the buttons with the message [PRESS here to start cleaning]. The screen will be switched off now. or tap [Cancel] to return to the main Menu.

TIP If the Clean Screen window is not shown, tap the on-screen clock first. (If no clock is displayed, check the section Main menu – Cup dispensing (on page 21) and tap on the location of the clock.

2. Clean the touchscreen with some (Isopropyl) alcohol on a clean soft cloth.
CAUTION – Do not use any other (aggressive) chemicals to clean the surface of the touchscreen. – Prevent dripping, do not use too much cleaning liquid on the cloth.

3. After some time, the touchscreen is switched on again. The machine returns to the Main menu and is ready for use.

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5.6.24 The service key

Purpose

For safety reasons all dispense functions are disabled if the door of the machine is opened. Use the green service key to override this safety for maintenance procedures that need a fully functioning machine.

5.6.24.1 Insert the service key

Required Use the following parts to perform the procedure: · Green service key.
Procedure Perform the following steps:

1. Locate the entry for the Service key on the inside of the door. 2. Insert the Service key in the service key entry. 3. Turn the Service key a quarter turn (90°).
The grey options in the Service menu change to yellow/ green.
The coffee machine is now fully functional with an open door.
The key remains locked in the entry.
WARNING When the service key is inserted, the machine is powered up with open door. Parts in the machine can move and hot water can flow out. Only insert the service key when requested.

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5.6.24.2 Remove the service key Required Use the following parts to perform the procedure: · Green service key. Procedure Perform the following steps:
1. Turn the Service key a quarter turn (90°). 2. Remove the Service key from the door.

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6
Troubleshooting

6.1 Messages
Always check if a message is shown on the display. If no message is shown and the machine does not work correctly, you still may find the possible cause and solution in the following table. For failures not mentioned in this manual: Consult the service engineer (see Service and support on page 3).

6.1.1 Message: Brewer not in home position

Message Brewer not in home position.

Solution

Perform the following steps to solve the problem:
1. Take out and install the brewer. If problem persists: Consult the service engineer (see Service and support on page 3).

6.1.2 Message: Brewer out of position

Message Brewer out of position.

Solution

Perform the following steps to solve the problem:
1. Take out and clean the brewer (see Clean brewer with cleaning tablet on page 78). If problem persists: Consult the service engineer (see Service and support on page 3).

6.1.3 Message: Clean screen

Message Clean Screen.
Cause After a defined number of consumptions, the touchscreen needs to be cleaned.
Solution Perform the steps as explained in the section Clean the touchscreen (on page 93).

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6.1.4 Message: Clean the milk system

Message Clean the milk system
Cause The last time the milk system was cleaned was at least 20 hours ago.
Solution Perform the following steps to solve the problem: 1. Clean the fresh milk system.

6.1.5 Message: Cleaning Error

Message Cleaning Error.

Cause The cleaning cycle did not finish correctly or was interrupted.

Solution

Perform the following steps to solve the problem:
1. Run the cleaning cycle (see Clean brewer with cleaning tablet on page 78) again. If problem persists: Consult the service engineer (see Service and support on page 3).

6.1.6 Message: Communication error

Message Communication error
Solution Consult the service engineer (see Service and support on page 3).

6.1.7 Message: Door open

Message Door open

Solution

Perform the following steps to solve the problem:
1. Close the door or install the green service key to activate the machine.

6.1.8 Message: Drip tray full

Message Drip tray full

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Solution

Perform the following steps to solve the problem:
1. Clean the drip tray (on page 64) in front of machine and/or clean the brewer drip tray (see Clean waste bucket on page 60) inside the waste bucket.
2. Make sure the water level sensors in the drip bucket / drip tray are dry.

See section Daily maintenance (on page 42).

6.1.9 Message: Empty waste bucket

Message Empty waste bucket

Solution

Perform the following steps to solve the problem:
1. Clean the waste bucket (see Clean waste bucket on page 60). If message is still shown check if the detector switch is clean. If the problem persists: Consult the service engineer (see Service and support on page 3).

6.1.10 Message: Enough water?

Message Enough water?

Solution

Perform the following steps to solve the problem:
1. Connect and open the water supply and restart the machine. 2. Clean brewer with cleaning tablet (on page 78). 3. Check if the problem also occurs when a hot water dispense is
made. If problem persists: Consult the service engineer (see
Service and support on page 3). Do not forget to mention the results.

6.1.11 Message: Filling boiler

Message Filling boiler

Solution

Perform the following steps to solve the problem:
1. Wait until the boiler is filled. 2. If message is still shown after 10 minutes: Consult the service
engineer (see Service and support on page 3).

6.1.12 Message: Grinder blocked

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Message Grinder blocked
Solution Perform the following steps to solve the problem: 1. Clean the grinder. (see Unblock the grinder on page 80)

6.1.13 Message: Heating boiler

Message Heating boiler

Solution

Perform the following steps to solve the problem:
1. Wait until boiler is heated. 2. If message is still shown after 10 minutes: Consult the service
engineer (see Service and support on page 3).

6.1.14 Message: Install drip tray

Message Install drip tray

Solution

Perform the following steps to solve the problem:
1. Place the drip tray. See also section Daily maintenance (on page 42).

6.1.15 Message: Place the waste bucket in the machine

Message Place the waste bucket in the machine

Solution

Perform the following steps to solve the problem:
1. Place the waste bucket. 2. Tap the correct button on the screen:
Waste bucket NOT empty. Waste bucket empty.

6.1.16 Message: Insert coins

Message Insert coins Solution Perform a full payment with coins, tokens or card.

6.1.17 Message: Mixer blocked

Message Mixer blocked

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

Solution

Perform the following steps to solve the problem:
1. Clean the mixing system (see Clean the mixing system and all hoses on page 66).

6.1.18 Message: Machine Blocked

Message Machine Blocked
Cause The coffee machine is locked during this time by the scheduler and not available for use.
Solution Consult the service engineer (see Service and support on page 3).

6.1.19 Message: Not all ingredients available

Message Not all ingredients available

Solution

Perform the following steps to solve the problem:
1. One or more canisters must be refilled. See section Fill the ingredient canisters.

6.1.20 Message: No coffee detected in brewer

Message No coffee detected in brewer

Solution

Perform the following steps to solve the problem:
1. Check if a canister must be refilled. See section Fill the ingredient canisters.
2. Check if the grinder runs to fill the brewer.

6.1.21 Message: No water connected / No water in boiler

Message No water connected / No water in boiler

Cause No water detected for more than 2 minutes.

Solution

Perform the following steps to solve the problem:
1. First check if the water supply is opened / connected. 2. Open the door of the coffee machine to display the Service
menu, wait 2 seconds and close the door again to allow the coffee machine to re-activate itself.

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If this does not help restart the coffee machine (Switch the coffee machine OFF, wait 5 seconds and then switch ON again).
If problem persists: Consult the service engineer (see Service and support on page 3).

6.1.22 Message: Place coffee funnel in the machine

Message Place coffee funnel in the machine

Solution

1. Open the door. 2. Place the coffee funnel. 3. Close the door. 4. Leave the Service menu: tap the [Exit] button and then the
[Close door and press here to quit service] button to return to the main menu.

6.1.23 Message: Place cup in center

Message Place cup in center
Cause Cup needs to be placed under the correct dispensing nozzle before the [Start] button is available.

Solution Perform the following steps to solve the problem: 1. If cup is placed in the correct position clean the cup sensor.

6.1.24 Message: Place cup left

Message Place cup left
Cause Cup needs to be placed under the water dispensing nozzle before the [Start] button is available.
Solution Perform the following steps to solve the problem: 1. If cup is placed in the correct position clean the cup sensor.

6.1.25 Message: Please load configuration

Message Please load configuration

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Solution Perform the following steps to solve the problem:
Consult the service engineer (see Service and support on page 3).

6.1.26 Message: Please load the User Interface

Message Please load the User Interface
Solution Perform the following steps to solve the problem: Consult the service engineer (see Service and support on page 3).

6.1.27 Message: Replace water filter

Message Replace water filter
Solution Consult the service engineer (see Service and support on page 3).

6.1.28 Message: Rinse brewer with tablet

Message Rinse brewer with tablet

Solution

Perform the following steps to solve the problem:
1. Clean the brewer with cleaning tablet (see Clean brewer with cleaning tablet on page 78) (again). See also Weekly maintenance (on page 43).

6.1.29 Message: Startup problem

Message Startup problem

Solution

1. Open/connect the water supply and restart the machine.
If the problem persists: Consult the service engineer (see Service and support on page 3).

6.1.30 Message: Temp. sensor disconnected

Message Temp. sensor disconnected
Solution Consult the service engineer (see Service and support on page 3).

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6.1.31 Message: Temperature boiler (too) high

Message Temperature boiler (too) high

Solution

1. Open the door of the coffee machine. 2. Insert the service key. 3. Perform the procedure Flush mixers and brewer (on page 49)
several times. 4. If message is still shown: Consult the service engineer (see
Service and support on page 3).

6.1.32 Message: Water level too low

Message Water level too low
Solution Consult the service engineer (see Service and support on page 3).

6.1.33 Message: Wait, Heating boiler

Message Wait, Heating boiler

Solution

Perform the following steps to solve the problem:
1. Wait until boiler is heated. 2. If message is still shown after 10 minutes: Consult the service
engineer (see Service and support on page 3).

6.1.34 Message: Waste bucket full / Empty waste bucket

Message Waste bucket full / Empty waste bucket

Solution

Perform the following steps to solve the problem:
1. Empty waste bucket (see Clean waste bucket on page 60). If message is still shown, remove the waste bucket and wait 6 seconds before placing it back. If message is still shown, check if the waste bucket detector switch is clean (check the Inside view (on page 17) drawing for the location). If the problem persists: Consult the service engineer.

6.1.35 Message: Water filter installed?

Message Water filter installed?

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Solution Consult the service engineer (see Service and support on page 3).
6.1.36 Message: Ready, take your cup
Message Ready, take your cup
Cause The dispense of the beverage is finished.
Solution Remove the cup or jug.

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7
Technical specifications
7.1 Standards and regulations
If the type plate inside the machine contains the CE mark in the lower left hand corner it conforms to CE standards. · Check the appendix of this manual for the Declaration of
Conformity.

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7.2 Type plate

The type plate is located inside the machine on the right side panel.
Type plate layout examples (depending on manufacturing location)

1. Manufacturer details 2. Serial number 3. Model code 4. Model name / configuration

5. Mains power specifications 6. Date of production 7. Water connection specifications 8. Markings for conformity, disposal and use.

NOTE Data shown in the picture is for illustration purposes only.

7.3 Disassembly and recycling
The coffee machine contains recyclable materials. Dispose of the coffee machine in conformity with local laws and regulations.

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7.4 Technical specifications
Height (with bean canister) Height (with extended bean canister) Width Width with Fresh Milk option Depth Weight (empty) Weight with Fresh Milk option (empty) 1

weight does not include the refrigerator itself
Mains supply (± 10%) Frequency (± 2%) Max. capacity
Water pressure Minimum pressure Maximum pressure Water connection Rated pressure Water boiler Steam boiler Quality of water Hardness
pH Value Temperature water
Main water connection
When in storage When in use
Standby Grinder / Coffee

Machine dimensions (± 5 mm) and weight specifications (± 10%) Nio CKA Series
599 mm 714 mm 460 mm 745 mm 540 mm 35 kg 39 kg
Machine electrical specifications Refer to the type plate (on page 106) inside the coffee machine for the correct values.
Machine water specification
90 kPa (0,9 bar) 600 kPa (6 bar) ¾ BSP connection
1,1 MPa (11 bar) 0,5 MPa (5 bar)
5-7° dH (German standard) 8-12 fH (French standard) approx. 7 The incoming temperature may not be above 30°C Between water tap and coffee machine an (electronic) waterlock needs to be connected
Machine ambient temperature specifications + 5 °C ~ + 50 °C + 5 °C ~ + 35 °C
Machine sound pressure < 20 dB(A) £ 62.7 dB(A)

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7.5 Cup and jug sizes

Cup and jug dimensions Nio model

Cups (A) Maximum cup height Maximum cup diameter Jugs (B) Maximum jug height Maximum jug diameter

110 mm 85 mm
110 mm 135 mm

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7.6 Manufacturer contact information

De Jong DUKE Postbus 190 3360 AD SLIEDRECHT The Netherlands +31 (0) 184 209 767 www.dejongduke.nl support@dejongduke.nl

De Jong DUKE North America 12680 Delta Street Taylor, MI, 48180 U.S.A. +1 734 403 1708 www.dejongduke.com support@dejongduke.com

Service and support For questions, service and ingredients for this coffee machine: Consult the service engineer (see Service and support on page 3).

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Appendix
8.1 Appendix list

8
Information related to this document and the coffee machine are: · Declaration of conformity (on page 111).

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8.2 Declaration of conformity

Nio CKA Series CoEx ® brewer User Manual 5DUCKA20M EN V2.2

111

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References

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Nio 5DUCKA20M Coffee Machine User Manual

5DUCKA20M Coffee Machine

Product Information: Nio Coffee Machine

Product Usage Instructions:

Before Use:

Dispensing Coffee:

Preventive Maintenance:

References

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