Hoshizaki KM-350MAJ Modular Crescent Cuber Instruction Manual

KM-350MAJ Modular Crescent Cuber

Product Information

The Modular Crescent Cuber is a series of ice machines offered
by Hoshizaki. The available models are:

• KM-350MAJ
• KM-420MAJ
• KM-520MAJ
• KM-660MAJ

For more information and support, you can visit the Hoshizaki
website at hoshizakiamerica.com. You
can also contact the Hoshizaki Technical Support Department
via:

• Phone: 1-800-233-1940; 770-487-2331
• Fax: 1-800-843-1056; 770-487-3360
• Email: techsupport@hoshizaki.com
• Address: 618 Highway 74 South Peachtree City, GA 30269 Attn:
  Hoshizaki Technical Support Department

Product Usage Instructions

Important Safety Information

Before installing and operating the appliance, it is crucial to
read and understand the safety guidelines provided in the user
manual. These guidelines ensure the safe use and maintenance of the
appliance.

Specifications

The electrical and refrigerant data for each model can be found
on the rating label and nameplate. The rating label is located
behind the front panel, while the nameplate is located on the rear
panel. Please refer to these labels for specific electrical and
compressor information.

Maintenance

Regular maintenance is essential for the proper functioning of
the appliance. Follow the maintenance schedule provided in the
manual to ensure optimal performance. Additionally, refer to the
cleaning and sanitizing instructions for proper maintenance of the
appliance.

Preparing the Appliance for Periods of Non-Use

If the appliance will not be used for an extended period, follow
the instructions in this section to prepare it for non-use. This
helps in preserving the appliance and preventing any damage during
periods of inactivity.

Disposal

When disposing of the appliance, follow the guidelines provided
in this section to ensure proper disposal and minimize any
potential harm to the environment.

Instruction Manual
Modular Crescent Cuber Models KM-350MAJ, MWJ KM-420MAJ, MWJ, MRJZ KM-520MAJ, MWJ, MRJZ KM-660MAJ, MWJ, MRJZ

hoshizakiamerica.com

Issued: 6-10-2022

WARNING
Only qualified service technicians should install and service the appliance. To obtain the name and phone number of your local Hoshizaki Certified Service Representative, visit www.hoshizaki.com. No installation or service should be undertaken until the technician has thoroughly read this Instruction Manual. Likewise, the owner/manager should not proceed to operate the appliance until the installer has instructed them on its proper operation. Failure to install, operate, and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage and may result in costly water damage. Proper installation is the responsibility of the installer. Product failure or property damage due to improper installation is not covered under warranty. Hoshizaki provides this manual primarily to assist qualified service technicians in the installation, maintenance, and service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, send an e-mail message, or write to the Hoshizaki Technical Support Department for assistance.
Phone: 1-800-233-1940; 770-487-2331 Fax: 1-800-843-1056; 770-487-3360
E-mail: techsupport@hoshizaki.com
618 Highway 74 South Peachtree City, GA 30269 Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the following information:
· Model Number
· Serial Number
· Complete and detailed explanation of the problem.
2

IMPORTANT
This manual should be read carefully before the appliance is installed and operated. Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use and maintenance of the appliance. Retain this manual for any further reference that may be necessary.
CONTENTS
Important Safety Information ……………………………………………………………………………………. 4 I. Specifications………………………………………………………………………………………………………. 6
A. Electrical and Refrigerant Data …………………………………………………………………………. 6 1. KM- 350M_J……………………………………………………………………………………………….. 6 2. KM- 420M_J(Z)…………………………………………………………………………………………… 6 3. KM- 520M_J(Z)…………………………………………………………………………………………… 7 4. KM- 660M_J(Z)…………………………………………………………………………………………… 7
B. Dimensions/Connections …………………………………………………………………………………. 8 1. Air-Cooled Models (MAJ) …………………………………………………………………………….. 8 2. Water-Cooled Models (MWJ)……………………………………………………………………….. 9 3. Remote Models (MRJZ)…………………………………………………………………………….. 10 4. Remote Condenser Unit URC-5FZ (use with KM-420MRJZ, KM-520MRJZ, or KM660MRJZ) ………………………………………………………………………………………………..11
II. Installation and Operating Instructions …………………………………………………………………. 12 A. Location ………………………………………………………………………………………………………. 12 B. Checks Before Installation………………………………………………………………………………. 13 C. How to Remove Panels ………………………………………………………………………………….. 13 D. Setup…………………………………………………………………………………………………………… 14 E. Electrical Connection …………………………………………………………………………………….. 15 F. Water Supply and Drain Connections ……………………………………………………………….. 16 G. Installation of Remote Condenser Unit for Remote Models …………………………………. 20 1. Location ………………………………………………………………………………………………….. 20 2. Checks Before Installation …………………………………………………………………………. 21 3. Setup ……………………………………………………………………………………………………… 21 4. Line Set Size and Refrigerant Charge …………………………………………………………. 21 5. Line Set Installation ………………………………………………………………………………….. 22 6. Electrical Connection………………………………………………………………………………… 26 7. Stacking Remote Condenser Unit ……………………………………………………………….. 27 H. Final Checklist………………………………………………………………………………………………. 28 1. Pre- Startup………………………………………………………………………………………………. 28 2. Post- Startup…………………………………………………………………………………………….. 29 I. Startup………………………………………………………………………………………………………….. 30 1. Bin Control Setting ……………………………………………………………………………………. 30 2. Appliance Startup and Bin Control Check ……………………………………………………. 33
III. Maintenance ……………………………………………………………………………………………………. 35 A. Maintenance Schedule…………………………………………………………………………………… 35 B. Cleaning and Sanitizing Instructions ………………………………………………………………… 36
IV. Preparing the Appliance for Periods of Non-Use …………………………………………………… 38 V. Disposal …………………………………………………………………………………………………………… 40
3

Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, damage to the appliance, or damage to property.

WARNING Indicates a hazardous situation which could result in death or

serious injury.

NOTICE

Indicates a situation which could result in damage to the appliance or property.

IMPORTANT

Indicates important information about the installation, use, and

care of the appliance.

WARNING
The appliance should be destined only to the use for which it has been expressly conceived. Any other use should be considered improper and therefore dangerous. The manufacturer cannot be held responsible for injury or damage resulting from improper, incorrect, and unreasonable use. Failure to install, operate, and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage and may result in costly water damage. To reduce the risk of death, electric shock, serious injury, or fire, follow basic precautions including the following:
· Only qualified service technicians should install and service the appliance.
· The appliance must be installed in accordance with applicable national, state, and local codes and regulations.
· Electrical connection must be hard-wired and must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage.
· The appliance requires an independent power supply of proper capacity. See the nameplate for electrical specifications. Failure to use an independent power supply of proper capacity can result in a tripped breaker, blown fuse, damage to existing wiring, or component failure. This could lead to heat generation or fire.
· THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker could result in death or serious injury.
· Move the control switch to the “OFF” position and turn off the power supply before servicing. Lockout/Tagout to prevent the power supply from being turned back on inadvertently.
· To reduce the risk of electric shock, do not touch the control switch or mode switch with damp hands.
· Do not make any alterations to the appliance. Alterations could result in electric shock, serious injury, fire, or damage.
· The appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

4

WARNING, continued
· Children should be properly supervised around the appliance. · Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged. · Do not use combustible spray or place volatile or flammable substances near the
appliance. They might catch fire. · Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance. Additional Warning for Remote Models · THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker. Failure to properly ground the remote condenser unit could result in death or serious injury. · Wire routing (conduit) and disconnect (if required) must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage.
NOTICE
· Follow the water supply, drain connection, and maintenance instructions carefully to reduce the risk of costly water damage.
· In areas where water damage is a concern, install in a contained area with a floor drain.
· Install the appliance in a location that stays above freezing. Normal operating ambient temperature must be within 45°F to 100°F (7°C to 38°C).
· Do not leave the appliance on during extended periods of non-use, extended absences, or in sub-freezing temperatures. To properly prepare the appliance for these occasions, follow the instructions in “IV. Preparing the Appliance for Periods of Non-Use.”
· Do not place objects on top of the appliance. · The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.
5

I. Specifications

A. Electrical and Refrigerant Data
The rating label and nameplate provide electrical and refrigerant data. The rating label can be seen by removing the front panel. The nameplate is located on the rear panel. For certification marks, see the nameplate. We reserve the right to make changes in specifications and design without prior notice.

1. KM-350M_J

Single Phase

Model Number

KM-350MAJ

AC Supply Voltage 115/60/1

Compressor

115V 7.5RLA 50LRA

Pump

120V 0.4FLA 10W

Fan

115V 1.0FLA 1/15 HP

Other

115V 0.15A

Maximum Fuse Size 15 AMPS

Max. HACR Breaker 15 AMPS

(USA Only)

Max. Circuit Breaker 15 AMPS

(Canada Only)

Minimum Circuit 15 AMPS

Ampacity

Design Pressure HI-467PSI LO-250PSI

Refrigerant

404A 1 LB. 3.4 OZ.

KM-350MWJ 115/60/1 115V 6.8RLA 50LRA 120V 0.4FLA 10W — — –115V 0.15A 15 AMPS 15 AMPS
15 AMPS
15 AMPS
HI-427PSI LO-250PSI 404A 11.6 OZ.

2. KM-420M_J(Z)

Model Number

KM-420MAJ

AC Supply Voltage 115/60/1

Compressor

115V 8.9RLA 54.5LRA

Pump

120V 0.5FLA 10W

Fan

120V 1.0FLA 1/15 HP

Other

115V 0.15A

Maximum Fuse Size 20 AMPS

Max. HACR Breaker 20 AMPS

(USA Only)

Max. Circuit Breaker 20 AMPS

(Canada Only)

Minimum Circuit 20 AMPS

Ampacity

Design Pressure HI – 467PSI LO – 250PSI

Refrigerant

404A 1 LB 10.8 OZ.

Single Phase KM-420MWJ 115/60/1 115V 7.8RLA 54.5LRA 120V 0.5FLA 10W — — –115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 427PSI LO – 250PSI 404A 12.7 OZ.

KM-420MRJZ 115/60/1 115V 8.9RLA 54.5LRA 120V 0.5FLA 10W 120V 3A MAX 115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 467PSI LO – 250PSI R404A Total Refrigerant Charge with Hoshizaki Remote Condenser Unit URC-5FZ: 4 LB. 2.7 OZ.

6

3. KM-520M_J(Z)

Model Number

KM-520MAJ

AC Supply Voltage 115/60/1

Compressor

115V 8.9RLA 54.5LRA

Pump

120V 0.5FLA 10W

Fan

120V 1.0FLA 1/15 HP

Other

115V 0.15A

Maximum Fuse Size 20 AMPS

Max. HACR Breaker 20 AMPS

(USA Only)

Max. Circuit Breaker 20 AMPS

(Canada Only)

Minimum Circuit 20 AMPS

Ampacity

Design Pressure HI – 467PSI LO – 250PSI

Refrigerant

404A 1 LB 10.8 OZ.

Single Phase KM-520MWJ 115/60/1 115V 7.8RLA 54.5LRA 120V 0.5FLA 10W — — –115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 427PSI LO – 250PSI 404A 12.7 OZ.

KM-520MRJZ 115/60/1 115V 8.4RLA 54.5LRA 120V 0.5FLA 10W 120V 3A MAX 115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 467PSI LO – 250PSI R404A Total Refrigerant Charge with Hoshizaki Remote Condenser Unit URC-5FZ: 4 LB. 2.7 OZ.

4. KM-660M_J(Z)

Model Number

KM-660MAJ

AC Supply Voltage 115/60/1

Compressor

115V 13.5RLA 77LRA

Pump

120V 0.5FLA 10W

Fan

120V 1.0FLA 1/15 HP

Other

115V 0.15A

Maximum Fuse Size 20 AMPS

Max. HACR Breaker 20 AMPS

(USA Only)

Max. Circuit Breaker 20 AMPS

(Canada Only)

Minimum Circuit 20 AMPS

Ampacity

Design Pressure HI – 467PSI LO – 250PSI

Refrigerant

404A 1 LB. 9.8 OZ.

Single Phase KM-660WJ 115/60/1 115V 11.7RLA 77LRA 120V 0.5FLA 10W — — –115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 467PSI LO – 250PSI 404A 15.2 OZ.

KM-660MRJZ 115/60/1 115V 12.6RLA 77LRA 120V 0.5FLA 10W 120V 3A MAX 115V 0.15A 20 AMPS 20 AMPS
20 AMPS
20 AMPS
HI – 467PSI LO – 250PSI R404A Total Refrigerant Charge with Hoshizaki Remote Condenser Unit URC-5FZ: 4 LB. 2.7 OZ.

7

B. Dimensions/Connections
1. Air-Cooled Models (MAJ)
Side

Units: mm [in.] Rear

NOTICE
· Allow 6″ (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.
· The storage bin opening must match the bottom opening as in the illustration.

Bottom

8

2. Water-Cooled Models (MWJ)
Side

Units: mm [in.] Rear

Bottom
NOTICE
· Allow 6″ (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.
· The storage bin opening must match the bottom opening as in the illustration.
9

3. Remote Models (MRJZ)
Side

Units: mm [in.] Rear

NOTICE
· Allow 6″ (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.
· The storage bin opening must match the bottom opening as in the illustration.

Bottom

10

4. Remote Condenser Unit URC-5FZ (use with KM-420MRJZ, KM-520MRJZ,

or KM-660MRJZ)

Units: mm [in.]

NOTICE

Allow 24″ (61 cm) clearance at front

and rear for proper air circulation and

ease of maintenance and/or service

Top

should they be required.

Icemaker Model KM-420MRJZ KM-520MRJZ KM-660MRJZ

URC-5FZ Heat of Rejection AT 90°F (32°C) WT 70°F (21°C) 6,200 BTU/h 6,200 BTU/h 8,100BTU/h

Rear

11

II. Installation and Operating Instructions WARNING
· The icemaker must be installed in accordance with applicable national, state, and local codes and regulations.
· Failure to install, operate, and maintain the icemaker in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage and may result in costly water damage.
· CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after installation. Make sure that none have fallen into the dispenser unit/ice storage bin.
A. Location NOTICE
· The icemaker is not intended for outdoor use. Normal operating ambient temperature must be within 45°F to 100°F (7°C to 38°C); Normal operating water temperature must be within 45°F to 90°F (7°C to 32°C). Operation of the icemaker, for extended periods, outside of these normal temperature ranges may affect icemaker performance.
· The icemaker will not work at sub-freezing temperatures. To prevent damage to the water supply line, drain the icemaker if the air temperature is going to go below 32°F (0°C). See “IV. Preparing the Appliance for Periods of Non- Use.”
· The icemaker should not be located next to ovens, grills, or other high heat producing equipment.
· Allow 6″ (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.
· The location should provide a firm and level foundation for the equipment.
12

B. Checks Before Installation

· Visually inspect the exterior of the shipping container and immediately report any damage to the carrier. Upon opening the container, any concealed damage should also be immediately reported to the carrier.

· Remove the shipping carton, tape, and packing material. If any are left in the icemaker, it will not work properly.

· See the nameplate on the rear panel, and check that your voltage supplied corresponds with the voltage specified on the nameplate.

· Remove the panels to prevent damage when installing the icemaker. See “II.C. How to Remove Panels.”

· Remove the package containing the accessories.

· Remove the protective plastic film from the panels. If the icemaker is exposed to the sun or to heat, remove the film after the icemaker cools.

· Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the fan blade (if applicable) turns freely.

· Check that the compressor is snug on all mounting pads.

· The icemaker can be installed on a dispenser unit or ice storage bin. The ice storage bins listed below are recommended.

Model Number KM-350M_J KM-420M_J(Z) KM-520M_J(Z) KM-660M_J(Z)

Bin Width 22″ or Wider

Recommended Hoshizaki Ice Storage Bin B-300 Series

For further options, contact your local Hoshizaki distributor.

· NOTICE! Remote models must be connected to an appropriate remote condenser unit. The remote condenser units listed below are recommended. Connection to a different remote condenser unit will void the warranty unless Hoshizaki approves a different remote condenser unit for your specific application. For further details, contact your local Hoshizaki distributor.

Model Number Recommended Hoshizaki Remote Condenser Unit KM-420MRJZ URC-5FZ KM-520MRJZ KM-660MRJZ

C. How to Remove Panels See Fig. 1

Front Insulation Panel

· Front Panel: Remove the screw. Lift up and towards you.
· Top Panel: Lift up at front slightly, push rearward and lift off.

Front Panel

Top Panel

· Right Side Panel: Remove the screw. Slide forward slightly and lift off.
· Front Insulation Panel: Lift up slightly and pull towards you.
· Base Cover: Lift up slightly and pull towards you.

Screw Base Cover Right Side Panel
Model Shown: KM-520MAJ
Fig. 1

13

D. Setup
1. Dispenser Unit/Ice Storage Bin and Icemaker Setup

WARNING
· The installer must ensure the dispenser unit/ice storage bin is compatible with the icemaker, and the dispenser unit/ice storage bin and icemaker are properly attached and secured.
· Do not allow top kits to interfere with the bin control lens sensing area or the icemaker will not operate properly.

1. If mounting the icemaker on top of a dispenser unit, follow the dispenser unit’s setup procedure. If mounting the icemaker on top of an ice storage bin, unpack the ice storage bin and attach the 4 adjustable legs provided (bin accessory) to the bottom of the ice storage bin.
2. Position the dispenser unit/ice storage bin in its permanent location.
3. If required, install an adapter kit or top kit. Contact your local Hoshizaki distributor for recommendations.
4. Level the dispenser unit/ice storage bin in both the left-to-right and front-to-rear directions. If using an ice storage bin, adjust the ice storage bin legs to level.
5. Place the icemaker on top of the dispenser unit/ice storage bin.
   6a) Dispenser Unit: Follow the dispenser unit, adapter kit, or top kit instructions for securing the icemaker. If no instructions are available, secure the icemaker using the mounting brackets provided. Rotate the mounting brackets so that they fit flush to the dispenser unit. See Fig. 2a. Secure the mounting brackets to the icemaker with the bolts provided. Secure the mounting brackets to the dispenser unit with self-tapping screws (not provided). NOTICE! Use care to avoid damage to dispenser unit components when attaching the mounting brackets. For dispenser unit bin control setting see “II.I.1. Bin Control Setting.”
   6b) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for securing the icemaker. If no instructions are available, secure the icemaker using the 2 mounting brackets and the bolts provided. See Fig. 2b.
   Icemaker

Mounting Brackets

Icemaker

Bolts

Bolts
Fig. 2a
Self-Tapping Screws (Not Provided)

Dispenser Unit

Fig. 2b

Ice Storage Bin

14

Mounting Brackets

E. Electrical Connection
WARNING
For All Models
· Electrical connection must be hard-wired and must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage.
· The icemaker requires an independent power supply of proper capacity. See the nameplate for electrical specifications. Failure to use an independent power supply of proper capacity can result in a tripped breaker, blown fuse, damage to existing wiring, or component failure. This could lead to heat generation or fire.
· THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker could result in death or serious injury.
· Electrical connection must be made in accordance with the instructions on the “WARNING” tag, provided with the pig tail leads. See Fig. 3.
Additional Warnings for Remote Models
· THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Power supply and ground connection to the remote condenser unit are supplied from the icemaker. See “II.G.6. Electrical Connection.” Failure to properly ground the remote condenser unit could result in death or serious injury.
· To reduce the risk of electric shock, make all remote condenser unit connections before connecting the icemaker power supply.

NOTICE
On remote models, the appliance must have power for a minimum of 4 hours prior to startup to prevent compressor damage.

· Usually an electrical permit and services of a licensed electrician are required.
· The maximum allowable voltage variation is ±10 percent of the nameplate rating.
· On 115/60/1 models, the white lead must be connected to the neutral conductor of the power source. NOTICE! Miswiring may result in severe damage to the icemaker.
· The opening for the power supply connection is 7/8″ DIA to fit a 1/2″ trade size conduit.

KM-350M_J KM-420M_J(Z) KM-520M_J(Z) KM-660M_J(Z)
WARNING
ELECTRICAL CONNECTION
THIS UNIT MUST BE GROUNDED Failure to properly ground or wire this unit could result in death, serious injury, or severe damage to the icemaker. The white lead must be connected to the neutral conductor of the power source. See diagram below.
115/60/1
JUNCTION BOX
L BLACK

115V

N WHITE

Fig. 3
15

F. Water Supply and Drain Connections See Figs. 4 through 6 WARNING
Water supply and drain connections must be installed in accordance with applicable national, state, and local regulations.
NOTICE
· Normal operating water temperature should be within 45°F to 90°F (7°C to 32°C). Operation of the appliance, for extended periods, outside of this normal temperature range may affect appliance performance.
· Water supply pressure must be a minimum of 10 PSIG and a maximum of 113 PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve is required.
· To prevent damage to the appliance, do not operate the appliance when the water supply is off, or if the pressure is below 10 PSIG. Do not run the appliance until the proper water pressure is reached.
· External filters, strainers, or softeners may be required depending on water quality. Contact your local Hoshizaki Certified Service Representative or local Hoshizaki distributor for recommendations.
· A plumbing permit and services of a licensed plumber may be required in some areas. · The icemaker drain line, dispenser unit/ice storage bin drain line, and water-cooled
condenser drain line (if applicable) must be run separately. The condensation drain line can be connected to the icemaker drain line or can be run separately. · Drain lines must have 1/4″ fall per foot (2 cm per 1 m) on horizontal runs to get a good flow. A vented tee connection is also required for proper flow. · Drain lines should not be piped directly to the sewer system. An air gap of a minimum of 2 vertical inches (5 cm) should be between the end of the drain pipes from the icemaker and condensation drain, dispenser unit/ice storage bin, and water-cooled condenser (if applicable) and the floor drain.
16

1. Icemaker

Icemaker Water Supply Inlet
1/2″ Female Pipe Thread (FPT)

Minimum Icemaker Water Supply Line Size
1/4″ Nominal ID Copper Water Tubing or Equivalent

Icemaker Drain Outlet
3/4″ Female Pipe Thread (FPT)

Minimum Icemaker Condensation Drain Line Size Drain Outlet

3/4″ Nominal ID Hard Pipe or Equivalent

3/8″ OD Hard Tube

· An icemaker water supply line shut-off valve and drain valve must be installed.

· Be sure there is sufficient extra water supply line and drain line for the appliance to be pulled out for service.

Minimum 1/4″ Nominal ID Copper Water Tubing or Equivalent

Icemaker Water Supply Inlet 1/2″ FPT

Shut-Off Valve

Icemaker Drain Outlet 3/4″ FPT
Bin Drain Outlet 3/4″ FPT
Minimum 3/4″ Nominal ID Hard Pipe or Equivalent

Drain Valve

Icemaker Condensation Drain Outlet 3/8″ OD Hard Tube

Be sure there is sufficient extra water supply line and drain line for the appliance to be pulled out for service.

Vent Tube

Separate piping to approved drain. Leave a 2″ (5 cm) vertical air gap between the end of each pipe and the drain.

Fig. 4
Model Shown: KM-520MAJ

Air-Cooled and Remote Models

2″ (5 cm) air gap Floor Drain

17

2. Water-Cooled Condenser

a) Connection to an Open Drain System

Condenser Water Supply Inlet
1/2″ Female Pipe Thread (FPT)

Minimum Condenser Water Supply Line Size
1/4″ Nominal ID Copper Water Tubing or Equivalent

Condenser Drain Minimum Condenser

Outlet

Drain Line Size

3/8″ Female Pipe 1/4″ Nominal ID Hard Pipe Thread (FPT) or Equivalent

· A condenser water supply line shut-off valve and drain valve must be installed.

· In some areas, a back flow preventer may be required in the cooling water circuit.

· In order to maintain the proper high side pressure, the condenser water supply inlet temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation is complete, confirm the condenser drain outlet temperature 5 minutes after a freeze cycle starts. If the condenser drain outlet temperature is not in the proper range, use a flat blade screwdriver to rotate the adjustment screw on the water-regulating valve until the temperature is in the proper range (rotate counterclockwise to raise temperature or clockwise to lower temperature).

Icemaker Water Supply Inlet 1/2″ FPT
Condenser Water Supply Inlet 1/2″ FPT
Condenser Drain Outlet 3/8″ FPT

Icemaker

Vent Tube

Shut-Off Valve

Minimum 1/4″ Nominal ID Copper Water Tubing or Equivalent

Icemaker Drain Outlet 3/4″ FPT
Bin Drain Outlet 3/4″ FPT

Ice Storage Bin

Drain Valve Be sure there is sufficient

extra water supply line and

Icemaker Condensation

drain line for the appliance to be pulled out for service.

Drain Outlet

Separate piping to approved

3/8″ OD Hard Tube drain. Leave a 2″ (5 cm)

vertical air gap between the

end of each pipe and the

Vent Tube

drain.

Minimum 1/4″ Nominal ID Hard Pipe or Equivalent

2″ (5 cm) air gap

Minimum 3/4″ Nominal ID Hard Pipe or Equivalent
Fig. 5

Model Shown: KM-520MWJ

Water-Cooled Models

Floor Drain

Connection to an Open Drain System

18

b) Connection to a Closed Loop System

Condenser Water Supply Inlet
1/2″ Female Pipe Thread (FPT)

Minimum Condenser Water Supply Line Size
1/4″ Nominal ID Copper Water Tubing or Equivalent

Condenser Return Outlet
3/8″ Female Pipe Thread (FPT)

Minimum Condenser Return Line Size
1/4″ Nominal ID Copper Water Tubing or Equivalent

· Shut-off valves and drain valves must be installed at both the condenser water supply inlet and condenser return outlet.

· Minimum water flow to the condenser is 4 GPM.

· The pressure differential between the condenser water supply inlet and condenser return outlet must be no less than 10 PSIG.

· When using a glycol blend, the solution mixture should be less than 30% glycol.

· In order to maintain the proper high side pressure, the condenser water supply inlet

temperature should not drop below 45°F (7°C) and the condenser return outlet

temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker

installation is complete, confirm the condenser return outlet temperature 5 minutes after a

freeze cycle starts. If the condenser return outlet temperature is not in the proper range,

use a flat blade screwdriver to rotate the adjustment screw on the water- regulating valve

until the temperature is in the proper range (rotate counterclockwise to raise temperature

or clockwise to lower temperature).

Icemaker Water Supply Inlet 1/2″ FPT
Condenser Water Supply Inlet 1/2″ FPT Condenser Return Outlet 3/8″ FPT

Icemaker

Minimum 1/4″ Nominal ID Copper Water Tubing or Equivalent
Shut-Off Valve

Icemaker Condensation Drain Outlet 3/8″ OD Hard Tube

Minimum 1/4″ Nominal ID Copper Water Tubing or Equivalent

Icemaker Drain Outlet 3/4″ FPT
Bin Drain Outlet 3/4″ FPT

Ice Storage Bin

Drain Valve Vent Tube

Be sure there is sufficient extra water supply line and drain line for the appliance to be pulled out for service.
Separate piping to approved drain. Leave a 2″ (5 cm) vertical air gap between the end of each pipe and the drain.

Minimum 3/4″ Nominal ID Hard Pipe or Equivalent

2″ (5 cm) air gap

Fig. 6
Model Shown: KM-660MWJ

Water-Cooled Models Connection to a Closed Loop System
19

Floor Drain

G. Installation of Remote Condenser Unit for Remote Models

WARNING
· Installation of remote condenser unit must be performed by properly trained and EPA-certified service personnel.
· The remote condenser unit must be installed in accordance with applicable national, state, and local codes and regulations.
· Failure to install the remote condenser unit within these guidelines may adversely affect safety, performance, component life, and warranty coverage.
· Power supply and ground wire to the remote condenser unit are supplied from the icemaker. For details, see section “II.G.6. Electrical Connection.”

1. Location

NOTICE
· The remote condenser unit is intended for outdoor use. Normal operating ambient temperature must be within -20°F to +122°F (-29°C to +50°C). Operation of the remote condenser unit, for extended periods, outside of this normal temperature range may affect appliance performance.
· The maximum line length for the standard line sizes and refrigerant charge is 66′ (20 m). With larger line sizes and/or additional refrigerant, the maximum line length is 100′ (30.5 m). For details, see “II.G.4 Line Set Size and Refrigerant Charge.”
· The maximum vertical distance between the remote condenser unit and the icemaker is 33′ (10 m) above or 10′ (3 m) below the icemaker. These distances are measured fitting to fitting. See Fig. 7.

The remote condenser unit must be positioned in a permanent site under the following guidelines:

· A firm and flat site.

· A dry and well ventilated area with 24″ (61 cm) clearance at front and rear for proper air

circulation and ease of maintenance and/or service should they be required. See Fig. 8.

Remote Condenser Unit

Icemaker

Min. 24″ (61 cm) Clearance

Max. 33′ (10 m)

Icemaker

Max. 10′ (3 m)

Air

Air

Service Loop

Service Loop

Fig. 7

Remote Condenser Unit
20

Fig. 8

2. Checks Before Installation

1. Remove the shipping carton, tape, and packing material.
2. Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the fan blades move freely.

3. Setup

1. Assemble 2 sets of legs using the legs, bolts, and nuts provided. See Fig.

2. Position 1 of the plates provided between a set of legs and the remote condenser unit, then secure the legs to the remote condenser unit with the bolts and nuts provided. Repeat on the other side with the remaining set of legs.
3. The bottom of each leg has a mounting hole. Secure the legs to the permanent site with 4 bolts (not included).
   4. Line Set Size and Refrigerant Charge

Nut Plate
Nut Leg

Fig. 9

Bolt with Split Lock Washer and Flat Washer

NOTICE
The icemaker, line set, and remote condenser unit must contain the same type of refrigerant. Mixing of refrigerants will result in improper operation and possible damage to the refrigeration system.

Line Set Size and Refrigerant Charge

Line Set

Hoshizaki Line Set

Greater than 66′ (20 m)

Remote Up to 66′ (20 m)

Maximum 100′ (30.5 m)

Hoshizaki Icemaker

Condenser Liquid Discharge Charge

Liquid Discharge Charge Adjustment

Unit

Line Line

Adjustment Line Line

(R-404A)

KM-420MRJZ URC-5FZ 1/4″ 3/8″ OD Not

3/8″ 1/2″ OD Add 16.5 oz. (468 g)

KM-520MRJZ

OD

Applicable OD

to compensate for

KM-660MRJZ

larger diameter line

sizes, then add

0.4 oz. for each foot

over 66 feet (40 g

for each meter over

20 m). Write new total

charge on icemaker’s

rating label.

21

5. Line Set Installation
WARNING
· R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F (80°C).
· R-404A itself is not explosive or poisonous. However, when exposed to high temperatures (open flames), R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous.
· Do not use silver alloy or copper alloy containing arsenic.
· Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the line set tubing through the service valve access ports (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). Do not use R-404A as a mixture with pressurized air for leak testing.

NOTICE
· Do not open any service valve until the line set installation is complete and leak tested.
· Ensure that there are no traps and no kinks in the line set. · Do not coil extra line set.

a) Line Set Up to 66′ (20 m)

1. Route the factory line set or appropriate size copper tubing. When field fabricating, insulate the copper tubes separately. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 7.
   Note: · The service loop is not considered an oil trap. · The maximum line length for the standard line sizes and refrigerant charge is 66′ (20 m). With larger line sizes and/or additional refrigerant, the maximum line length is 100′ (30.5 m). For details, see “II.G.4 Line Set Size and Refrigerant Charge.”

2. Remove any extra line set length, then insulate the two copper tubes separately.

3. Remove the Schrader valves from the icemaker service valves. Next, remove the straight copper tube from the icemaker accessory bag and place it in the icemaker liquid line service valve with the smaller end of the straight copper tube facing outward. See Fig. 10. Note: The smaller diameter must be facing outward. Next, place the liquid line copper tube into the straight copper tube.

Condenser Unit Discharge Line Service Valve

Service Valve Cap

Access Valve Cap

Straight Copper Tube Smaller Diameter End

Shrader Valve
22

Fig. 10

NOTICE
· Before brazing, remove the Schrader valve cores from the service valve access ports.
· When brazing protect the service valve by using a wet cloth to prevent the service valve from overheating.
· Braze all fittings while purging with a nitrogen gas flowing at a pressure of 3 to 4 PSIG.
4) Braze the liquid line copper tube to the straight copper tube and the straight copper tube to the icemaker liquid line service valve.
5) Braze the icemaker discharge line copper tube to the icemaker discharge line service valve.
6) Remove the Schrader valves from the condenser unit service valves. Next, remove the straight copper tube from the accessory bag and place it in the condenser unit liquid line service valve with the smaller end of the straight copper tube facing outward. See Fig. 10. Note: The smaller diameter must be facing outward. Next, place the liquid line copper tube into the straight copper tube.
7) Braze the liquid line copper tube to the straight copper tube and the straight copper tube to the condenser unit liquid line service valve.
8) Braze the condenser unit discharge line to the condenser unit discharge line service valve.
9) Allow the service valves to cool, then replace the Schrader valve cores. Attach the gauge manifold hoses.
10) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the line set tubing through the service valve access ports (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
11) After checking the line set for leaks, vent the nitrogen charge from the line set. 12) Evacuate the line set. Allow the vacuum pump to pull down to a 29.9″ Hg vacuum.
Evacuating period depends on pump capacity. 13) After evacuation, charge each line set tube with R-404A vapor to a pressure of 15 to 30
PSIG. 14) Close both gauge manifold valves. 15) Open the icemaker service valves first, then open the remote condenser unit service
valves. 16) Disconnect the gauge manifold hoses. 17) Replace all service valve caps and tighten. 18) Insulate all exposed tubing and fittings.
23

b) Line Set Greater Than 66′ (20 m) Up to a Minimum of 100′ (30.5 m)

1. Route the factory line set or appropriate size copper tubing. When field fabricating, insulate the copper tubes separately. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 7.

Note: · The service loop is not considered an oil trap.
· The maximum line length for the standard line sizes and refrigerant charge is 66′ (20 m). With larger line sizes and/or additional refrigerant, the maximum line length is 100′ (30.5 m). For details, see “II.G.4 Line Set Size and Refrigerant Charge.”
2) Remove any extra line set length, then insulate the two copper tubes separately.
3) Remove the Schrader valves from the icemaker service valves. Next, place the liquid line copper tube into the liquid line service valve. Note: The straight copper tube in the icemaker accessory bag is not used for line sets over 66′ (20 m).
NOTICE
· Before brazing, remove the Schrader valve cores from the service valve access ports.
· When brazing protect the service valve by using a wet cloth to prevent the service valve from overheating.
· Braze all fittings while purging with a nitrogen gas flowing at a pressure of 3 to 4 PSIG.

4. Braze the liquid line copper tube to the icemaker liquid line service valve.

5. Place the 3/8″ end of a 1/2″×3/8″ copper slip reducer (not provided) in the icemaker discharge line service valve, then place the discharge line copper tube into the 1/2″ end of the 1/2″×3/8″ copper slip reducer. See Fig. 11.

Condenser Unit Discharge Line Service Valve

Service Valve Cap

Access Valve Cap

1/2×3/8 Copper Reducer 1/2″ Diameter End

Shrader Valve

Fig. 11

6. Braze the icemaker discharge line copper tube to the 1/2″×3/8″ copper slip reducer and the 1/2″×3/8″ copper slip reducer to the icemaker discharge line service valve.

7. Remove the Schrader valves from the condenser unit service valves. Next, place the liquid line copper tube into the liquid line service valve. Note: The straight copper tube in the condenser unit accessory bag is not used for line sets over 66′ (20 m).

8. Braze the liquid line copper tube to the condenser unit liquid line service valve.

9. Place the 3/8″ end of a 1/2″×3/8″ copper slip reducer (not provided) in the condenser unit discharge line service valve, then place the discharge line copper tube into the 1/2″ end of the 1/2″×3/8″ copper slip reducer. See Fig.

24

10. Braze the condenser unit discharge line copper tube to the 1/2″×3/8″ copper slip reducer and the 1/2″×3/8″ copper slip reducer to the condenser unit discharge line service valve.
11. Allow the service valves to cool, then replace the Schrader valve cores. Attach the gauge manifold hoses.
12. Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the line set tubing through the service valve access ports (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
13. After checking the line set for leaks, vent the nitrogen charge from the line set. 14) Evacuate the line set. Allow the vacuum pump to pull down to a 29.9″ Hg vacuum.
    Evacuating period depends on pump capacity. 15) After evacuation, add the appropriate amount of additional R-404A. See “II.G.4 Line Set
    Size and Refrigerant Charge” for details. Hoshizaki Technical Support is available at 1-800-233-1940 for recommendations. 16) Close both gauge manifold valves. 17) Open the icemaker service valves first, then open the remote condenser unit service valves. 18) Disconnect the gauge manifold hoses. 19) Replace all service valve caps and tighten. 20) Insulate all exposed tubing and fittings.
    25

6. Electrical Connection
WARNING
· Electrical connection must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage.
· To reduce the risk of electric shock, make all remote condenser unit connections before connecting the icemaker power supply.
· THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Install a ground wire from the icemaker fan motor junction box to the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating. Failure to properly ground the remote condenser unit could result in death or serious injury.
· Install line and neutral wires from the fan motor leads in the icemaker fan motor junction box to the leads in the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating.
· Do not connect the fan motor leads in the icemaker to incoming power source. Do not connect the fan motor leads in the icemaker together. Do not allow the leads to contact the junction box walls.
· Do not connect the remote condenser unit to an external power source.
NOTICE
On remote models, the appliance must have power for a minimum of 4 hours prior to startup to prevent compressor damage.
· Usually an electrical permit and services of a licensed electrician are required. · The opening for the power supply connection is 7/8″ DIA to fit a 1/2″ trade size conduit. 1) Remove the remote condenser unit louver panel. See Fig. 12. 2) Remove the icemaker fan motor junction box cover. Remove the remote condenser unit
junction box cover.

Fig. 12

Remote Condenser Unit

Screws

Junction Box Cover
Louver Panel

Icemaker Fan Motor Junction Box Cover
Screw

26

3. Install a ground wire from the icemaker fan motor junction box to the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating.
4. Install line and neutral wires from the fan motor leads in the icemaker fan motor junction box to the leads in the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating.
5. Replace the junction box covers and the louver panel in their correct positions.
   7. Stacking Remote Condenser Unit
6. Install the lower remote condenser unit as described earlier in this section.
7. Place the upper remote condenser unit on top of the lower remote condenser unit. See Fig. 13.
8. Secure the upper remote condenser unit to the lower remote condenser unit with the 4 screws provided.
9. Install refrigerant lines and make electrical connection as described earlier in this section.

Screws

Upper Remote Condenser Unit
Screws
Lower Remote Condenser Unit

Fig. 13

27

H. Final Checklist
1. Pre-Startup 1) Is the icemaker level? 2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to 38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around? 3) Is there at least 6″ (15 cm) clearance at rear, sides, and top of the icemaker? 4) Have the shipping carton, tape, and packing material been removed from the icemaker? Is the cube guide in the correct position? 5) Have all electrical and water connections been made? Do electrical and water connections meet applicable national, state, and local code and regulation requirements? 6) Has the power supply voltage been checked or tested against the nameplate rating? Has a proper ground been installed to the icemaker? On remote models, has a proper ground also been installed to the remote condenser unit? 7) Are the water supply and drain lines sized as specified? Are the water supply line shut-off valve(s) and drain valve(s) installed? Has the water supply pressure been checked to ensure a minimum of 10 PSIG and a maximum of 113 PSIG? 8) Is the compressor snug on all mounting pads? Have the refrigerant lines been checked to make sure they do not rub or touch other lines or surfaces? Has the fan blade (if applicable) been checked to make sure it turns freely? 9) On remote models: · Is the line set sized as specified, insulated, tightened, and free of leaks and kinks? · If the line set exceeds 66′ (20 m), has the line set size (if applicable) and charge been adjusted as specified? · Has the appliance power supply been on for a minimum of 4 hours? · Is the remote condenser unit in a site where the ambient temperature is within -20°F to +122°F (-29°C to +50°C) all year around? · Is there at least 24″ (61 cm) clearance around the remote condenser unit?
28

2. Post-Startup 1) Has the bin control been set to the proper setting for the application? 2) Has the bin control operation been confirmed? 3) Are all components, fasteners, and thumbscrews securely in place? 4) Has the end user been given the instruction manual, and instructed on how to operate the appliance and the importance of the recommended periodic maintenance? 5) Has the end user been given the contact information of an authorized service agent? 6) Has the warranty registration been completed and submitted to the factory?
29

I. Startup
1. Bin Control Setting An ultrasonic sensor is used as the bin control to control the level of ice in the dispenser unit/ice storage bin. The bin control setting must be set to match the application to avoid possible icemaker movement, water leakage, or ice overflow.
WARNING
· Improper adjustment may adversely affect safety, performance, component life, and warranty coverage.
· On dispenser unit applications, do not increase ice level above the recommended setting listed below. Higher ice levels could result in icemaker movement, water leakage, or ice overflow.

NOTICE
Do not allow top kits or top kit risers (if applicable) to interfere with the bin control lens sensing area or the icemaker will not operate properly.

1. Make sure the power supply is off. Remove the front, top, and right side panels to allow access to the control board. Also, remove the base cover. See Fig. 14. Note: If front access to the control box is required, remove the control box mounting screws, then slide the control box forward and rotate the control box for access. See Fig. 15.

Icemaker Base Cover

Fig. 14

Control Switch Mode Switch
Water Tank
Disconnect This End of Pump Tubing to Drain Water Tank

Control Board

Control Box

Control Box
Control Box Mounting Screws
Fig. 15

2. Confirm the correct control board bin control setting required for your application and adjust as detailed below.

Application Standard Ice Storage Bins (Factory Default) Hoshizaki DB and DM Dispensers Coca-Cola Freestyle® Dispensers Non-Hoshizaki Dispensers

Bin Control Setting 1 2 3
Measurement Required

Reference See Fig. 16
See Fig. 17

30

For Standard Ice Storage Bins, Hoshizaki DB and DM Dispenser Units, and Coca- Cola

Freestyle® Dispenser Units

Application

Bin Control Ice Level Settings

Shutdown Distance From Bin Control Lens Bin Control Setting (Restart is 4 in. (102 mm) below shutdown distance)

Standard Ice Storage Bins

1 (Factory Default)

254 mm (10″) Do not adjust dispensers to this setting.

Hoshizaki DB and DM Dispensers

2

305 mm (12″)

Coca-Cola Freestyle® Dispensers

3

406 mm (16″)

Optional Setting

4

508 mm (20″)

5

610 mm (24″)

WARNING
Confirm that the final ice level location does not allow for icemaker movement, water leakage, or ice overflow.

Icemaker

Icemaker

Bin Control Lens

Bin Control Lens

Setting #1 Setting #2 Setting #3 Setting #4 Setting #5

Standard Ice Storage Bin

Hoshizaki DB-200H Dispenser Unit

Setting #1 Setting #2 Setting #3 Setting #4 Setting #5

Model Shown: KM-660MAJ with B-300SF

Control Board

Model Shown: KM-520MAJ with DB-200H
Recommended Setting for Coca-Cola Freestyle® Dispensers

Turn dial to adjust to proper setting

Recommended Setting for Hoshizaki DB and DM Dispensers

Fig. 16
31

Factory Default for Standard Ice Storage Bins WARNING! Do not use this setting with dispensers.

For Non-Hoshizaki Dispenser Units

Bin Control Ice Level Settings

Bin Control Setting

Shutdown Distance From Bin Control Lens (Restart is 4 in. (102 mm) below shutdown distance)

1 (Factory Default)

Do not adjust dispensers to this setting. 254 mm (10″)

2

305 mm (12″)

3

406 mm (16″)

4

508 mm (20″)

5

610 mm (24″)

WARNING
Confirm that the final ice level location does not allow for icemaker movement, water leakage, or ice overflow.

NOTICE
The ice level must be lower than the top of the dispenser unit. Also, be sure the top kit or top kit riser (if applicable) are clear from the bin control lens sensing area.

Full Bin Measured Distance

Icemaker

(Shutdown Distance)

Measure from the bottom of Bin Control Lens

the compressor base (bin

control lens) to the preferred

full bin level of ice; refer to the

dispenser instruction manual.

Top Kit

Set Bin Control Setting at or Below Maximum Full Bin Level of Ice (Shutdown Position) Shown Here

Icemaker Restart Level (4″ (102 mm) below preferred full bin level of ice)

Non-Hoshizaki Control Board Dispenser Unit
Bin Control Setting

Bin Control Lens
Setting #1 Setting #2 Setting #3 Setting #4 Setting #5
Maximum Full Bin Level of Ice (Shutdown Position). WARNING! Do not adjust bin control setting above this level.

Turn dial to adjust to setting that matches Full Bin Measured Distance (Shutdown Distance)
32

Factory Default for Standard Ice Storage Bins WARNING! Do not use this setting with dispensers.
Fig. 17

2. Appliance Startup and Bin Control Check
WARNING
· All parts are factory-adjusted. Improper adjustments may adversely affect safety, performance, component life, and warranty coverage.
· Make sure the icemaker has been installed as outlined in this manual and that the water supply is on.
· Improper adjustment may adversely affect safety, performance, component life, and warranty coverage.

NOTICE
· If the icemaker is turned off, wait for at least 3 minutes before restarting the icemaker to prevent damage to the compressor.
· To prevent damage to the water pump seal, do not leave the control switch in the “PUMP” position for extended periods when the water tank is empty.
· At startup, confirm that all internal and external connections are free of leaks. · Do not allow top kits or top kit risers (if applicable) to interfere with the bin control
lens sensing area or the icemaker will not operate properly. Additional Notice for Remote Models
· The appliance must have power for a minimum of 4 hours prior to startup to prevent compressor damage.

1. If not already removed, remove the front, top, and right side panels and base cover. Make sure the bin control setting has been adjusted as outlined in “II.I.1. Bin Control Setting.”

2. Open the water supply line shut-off valve(s).

3. Move the mode switch on the control box to the “ICE” position, then move the control switch to the “ON” position. Turn on the power supply, and allow the icemaker to operate.

4. Confirm the control board “BIN CLS” LED is off (bin empty). See Fig. 18.

Ice Level in Bin Empty Full

Control Board “BIN CLS” LED OFF ON

Bin Control Setting

5. If the control board “BIN CLS” is on (indicating a full bin), correct any interference from the top kit or top kit riser (if applicable).

BIN CLS LED

Control Board

Fig. 18
33

6. 1 min. fill cycle begins. Place an object 5″ to 7″ (127 to 178 mm) away from the bin control lens. See Fig. 19. 15 sec. later, the icemaker shuts down. Remove the object from the bin control lens. 30 sec. later, the icemaker restarts. For bin control shutdown times per cycle, see the table below.

Cycle at Bin Control Activation Shutdown

1 min. Fill Cycle 15 sec. after activation.

Harvest Cycle

If engaged 15 sec. or longer, at the end of harvest cycle.

Freeze Cycle

15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle protection timer terminates. Otherwise, at the end of the next harvest cycle.

Icemaker

Control Switch Mode Switch

Compressor Base

Fig. 19

Bin Control Lens

7. Once the icemaker restarts, move the control switch to the “OFF” position, then turn off the power supply.

8. If the control box was rotated, replace the control box in its correct position and secure with the 2 control box mounting screws.

9. Replace the base cover, right side, top, and front panels in their correct positions.

10. Turn on the power supply, and allow the icemaker to operate for 10 min.

11. After 10 min., turn off the power supply, then remove the front panel.

12. Move the control switch to the “OFF” position, then remove the base cover and disconnect the rear pump tubing connection to drain the water tank. See Fig. 20.

Control Switch Mode Switch
Water Tank

Icemaker

13. After the water tank has drained, reconnect

the pump tubing.

Base Cover

14. Clean the dispenser unit/ice storage

bin liner using a neutral cleaner. Rinse thoroughly after cleaning.

Fig. 20

Disconnect This End of Pump Tubing to Drain Water Tank

15. Replace the base cover in its correct position. Move the control switch to the “ON” position. Replace all panels in their correct positions.

16. Turn on the power supply to start the automatic icemaking process.

17. On water-cooled models, confirm proper condenser drain outlet/return outlet temperature as outlined in “II.F.2. Water-Cooled Condenser.”

18. Return to “II.H.2. Post-Startup” and complete final checklist.

34

III. Maintenance
The appliance must be maintained in accordance with the instruction manual and labels provided. Consult with your local Hoshizaki Certified Service Representative about maintenance service.
WARNING
· Only qualified service technicians should service the appliance.
· To reduce the risk of electric shock, do not touch the control switch or mode switch with damp hands.
· Move the control switch to the “OFF” position and turn off the power supply before servicing. Lockout/Tagout to prevent the power supply from being turned back on inadvertently.
· CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after any maintenance is done to the appliance. Make sure that none have fallen into the dispenser unit/ice storage bin.

A. Maintenance Schedule
The maintenance schedule below is a guideline. More frequent maintenance may be required depending on water quality, the appliance’s environment, and local sanitation regulations.

Maintenance Schedule

Frequency Area

Task

Daily

Scoop

Bi-Weekly Air Filters

Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning. Inspect. Wash with warm water and neutral cleaner if dirty.

Monthly

External Water Filters

Check for proper pressure and change if necessary.

Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust colored spots) using a non-abrasive cleanser.

Underside of

Wipe down with a clean cloth and warm water.

Icemaker and Top

Kits; Bin Door and

Snout

Yearly

Icemaker and

Clean and sanitize per the cleaning and sanitizing instructions provided in

Dispenser Unit/Ice this manual. See “III.B. Cleaning and Sanitizing Instructions.”

Storage Bin

Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water

system. Clean the water supply inlet screen.

Condenser

Inspect. Clean if necessary by using a brush or vacuum cleaner. More frequent cleaning may be required depending on location.

Water Hoses

Inspect the water hoses and clean/replace if necessary.

35

B. Cleaning and Sanitizing Instructions
The icemaker must be cleaned and sanitized at least once a year. More frequent cleaning and sanitizing may be required in some water conditions.
WARNING
· To prevent injury to individuals and damage to the icemaker, do not use ammonia type cleaners.
· Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution.
· Always wear liquid-proof gloves and goggles to prevent the cleaning and sanitizing solutions from coming into contact with skin or eyes.
· Do not leave the icemaker unattended when panels are off.
NOTICE
To prevent damage to the water pump seal, do not leave the control switch in the “PUMP” position for extended periods when the water tank is empty.
Preparation

1. Remove the front panel, then move the control switch to the “OFF” position. Make sure the mode switch is in the “ICE” position. After 3 minutes, move the control switch to the “ON” position and replace the front panel.
2. Allow the appliance to run until the compressor energizes. Once the compressor energizes, allow the appliance to run for an additional 3 minutes, then remove the front panel. Move the control switch to the “OFF” position.
3. Remove all ice from the dispenser unit/ice storage bin. WARNING! If on a dispenser unit, turn off the dispenser unit power supply after dispensing the ice.
   Cleaning
4. Move the mode switch to the “CLEAN” position, then move the control switch to the “ON” position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. The water tank drains and then fills.
5. When the control board starts beeping (2 beep sequence), remove the front panel. Move the control switch to the “OFF” position.
6. Remove the front insulation panel, then pour 10.4 fl. oz. (308 ml) of Hoshizaki “Scale Away” into the water tank. Replace the front insulation panel.
7. Move the control switch to the “ON” position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes of circulation, the icemaker performs 3 rinse cycles.
8. When the control board starts beeping (5 beep sequence), remove the front panel. Move the control switch to the “OFF” position.
9. In bad or severe water conditions, turn off the power supply, then remove, clean (cleaning solution = 5 oz. Hoshizaki “Scale Away” per gallon of warm water), rinse, and replace the cube guide, float switch, water supply tubes, spray tubes, and spray guides; turn on the power supply when complete. Otherwise, continue to step 10. 36

Sanitizing 10) Confirm the mode switch is in the “CLEAN” position, then move the control switch to the
“ON” position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. The water tank drains and then fills. 11) When the control board starts beeping (2 beep sequence), remove the front panel. Move the control switch to the “OFF” position. 12) Remove the front insulation panel, then pour 0.6 fl. oz. (18 ml) of an 8.25% sodium hypochlorite solution (chlorine bleach) into the water tank. Replace the front insulation panel. IMPORTANT! Use regular bleach with no additives. Using a bleach with additives causes excessive foaming during sanitizing, reducing the effectiveness of sanitizing. 13) Move the control switch to the “ON” position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes of circulation, the icemaker performs 3 rinse cycles. 14) When the control board starts beeping (5 beep sequence), remove the front panel. Move the control switch to the “OFF” position. 15) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning. 16) Move the mode switch to the “ICE” position, then move the control switch to the “ON” position. Note: If on a dispenser unit, turn on the dispenser unit power supply. 17) Replace all panels in their correct positions.
37

IV. Preparing the Appliance for Periods of Non-Use

NOTICE
· When storing the icemaker for an extended time or in sub-freezing temperatures, follow the instructions below to prevent damage.
· To prevent damage to the water pump seal, do not leave the control switch in the “PUMP” position for extended periods when the water tank is empty.

When the icemaker is not used for two or three days under normal conditions, it is sufficient to move the control switch to the “OFF” position. When storing the icemaker for an extended time or in sub-freezing temperatures, follow the instructions below.

1. Remove the water from the icemaker water supply line:

1. Turn off the power supply, then remove the front panel.

2. Move the control switch to the “OFF” position.

3. Close the icemaker water supply line shut-off valve, then open the icemaker water supply line drain valve.

4. Allow the line to drain by gravity.

5. Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve.

6. Move the mode switch to the “ICE” position, then move the control switch to the “ON” position.

7. Replace the front panel in its correct position, then turn on the power supply.

8. Blow the icemaker water supply line out using the compressed air or carbon dioxide supply.

9. Close the icemaker water supply line drain valve.

2. Drain the water tank:

1. Turn off the power supply, then remove the front panel.

2. Move the control switch to the “OFF” position.

3. Remove the base cover, then disconnect one end of the pump tubing to drain the water tank. See Fig. 21. After the water tank has drained, reconnect the pump tubing.

4. Remove all ice from the dispenser unit/ice storage bin. Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.

5. Replace the base cover and the front panel in their correct positions.

Control Switch Mode Switch
Water Tank

Icemaker

Base Cover

Fig. 21

Disconnect This End of Pump Tubing to Drain Water Tank

38

3. On water-cooled models, remove the water from the water-cooled condenser:

1. Make sure the power supply is off, then remove the front, top, and right side panels. 2) Close the condenser water supply line shut-off valve. If connected to a closed loop system, also close the condenser return line shut- off valve. 3) Open the condenser water supply line drain valve. If connected to a closed loop system, also open the condenser return line drain valve. 4) Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve. 5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring. While holding the valve open, blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out. 6) Close the drain valve(s). 7) Replace the panels in their correct positions.
   39

V. Disposal
The appliance contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulations. Refrigerant must be recovered by properly certified service personnel.
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618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 7704.4187.2331 (F) 770.487.3360 hoshizakiamerica.com 1A6890-010

References

• Hoshizaki America, Inc.
• HOSHIZAKI

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