Kress KR233E Robotic Lawn Mower Owner’s Manual

Kress KR233E Robotic Lawn Mower

Users can view the electronic instructions at https://www.kress.com/en/.

Product safety

General safety warnings

WARNING: Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Carefully read the instructions for the safe operation of the machine.

Save all warnings and instructions for future reference.

• This 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.
• Children should be supervised to ensure that they do not play with the appliance.
• This appliance contains batteries that are only replaceable by skilled persons.
  WARNING: For the purposes of recharging the battery, only use the detachable supply unit provided with this appliance.

IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE

Safe operation practices
Training

a) Read the instructions carefully. Make sure you understand the instructions and be familiar with the controls and the proper use of the appliance.
b) Never allow people unfamiliar with these instructions or children to use the appliance.
Local regulations can restrict the age of the operator.
c) The operator or user is responsible for accidents or hazards occurring to other people or their property.

Preparation

a) Confirm that the virtual boundary is established as instructed and the virtual boundary is regularly maintained. Before each working cycle, the machine goes around the working area to check whether the virtual boundary exists, if it does not exist, the machine will shut down. The virtual boundary specifies the work area where the machine is allowed to operate. The RTK antenna in the machine senses when it is approaching the virtual boundary. When the machine hits an obstacle or approaches the virtual boundary the product selects a new direction.
b) Periodically inspect the area where the appliance is to be used and remove all stones, sticks, wires, bones, and other foreign objects.
c) Periodically visually inspect to see that the blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.
d) On multi-spindle appliances, take care as rotating one blade can cause other blades to rotate.
e) WARNING! The lawnmower shall not be operated without the guard in place.

Operation

1. General
   a) Never operate the appliance with defective guards, or without safety devices, for example deflectors, in place.
   b) Do not put hands or feet near or under rotating parts. Keep clear of the discharge opening at all times.
   c) Never pick up or carry an appliance while the motor is running.
   d) Operate the disabling device from the appliance

   • Before clearing a blockage;
   • Before checking, cleaning or working on the appliance;
   • After striking a foreign object to inspect the machine for damage;
   • If the machine starts to vibrate abnormally, and to check for damage before restarting.
     e) It is not permitted to modify the original design of robotic lawnmower. All modifications are made at your own risk.
     f) Start robotic lawnmower according to the instructions. When the power is on, make sure you keep your hands and feet away from the rotating blades. Never put your hands and feet under the mower.
     g) Never lift up robotic lawnmower or carry it when the power is on.
     h) Do not let persons who do not know how robotic lawnmower works and behaves use the mower.
     i) Do not put anything on top of robotic lawnmower or its charging base.
     j) Do not allow robotic lawnmower to be used with a defective blade disc or body. Neither should it be used with defective blades, screws, nuts or cables.
     k) Always switch off robotic lawnmower when you do not intend to use the mower. Robotic lawnmower can only start when the power is on and the correct PIN code has been entered.
     l) Keep your hands and feet away from the rotating blades. Never place your hands or feet close to or under the body when robotic lawnmower is in operation.
     m)To avoid using the machine and its peripherals in bad weather conditions especially when there is a risk of lightning.
     n) Not to touch moving hazardous parts before these have come to a complete stop.
     o) For machines used in public areas, warning signs shall be placed around the working area of the machine. They shall show the substance of the following text:
     Warning! Automatic lawnmower! Keep away from the machine! Supervise children!

2. Additionally when the appliance is operating automatically
   a) Do not leave the machine to operate unattended if you know that there are pets, children or people in the vicinity.

Maintenance and storage

WARNING! When the mower is turned upside down the power must always be off.
The power should be off during all work on the mower’s under frame, such as cleaning or replacing the blades.

a) Keep all nuts, bolts and screws tight to be sure the appliance is in safe working condition.
b) Inspect the robotic lawnmower each week and replace worn or damaged parts for safety.
c) Check especially that the blades and blade disc are not damaged. Replace all blades and screws at the same time if necessary so that the rotating parts are balanced.
d) Ensure that only replacement cutting means of the right type are used.
e) Ensure that batteries are charged using the correct charger recommended by the manufacturer. Incorrect use may result in electric shock, overheating or leakage of corrosive liquid from the battery.
f) In the event of leakage of electrolyte flush with water/neutralizing agent, seek medical help if it comes into contact with the eyes etc.
g) Servicing of the appliance should be according to manufacturers’ instructions.

Recommendation

To connect the machine and/or its peripherals only to a supply circuit protected by a residual current device (RCD) with a tripping current of not more than 30 mA.

Residual risks

To avoid injuries, wear protective gloves when replacing the blades.

Transport

The original packaging should be used when transporting robotic lawnmower over long distances.
To safely move form or within the working area:
a) Press the STOP button to stop the mower.
You select the four digit PIN code when you start the mower for the first time.
b) Always switch off robotic lawnmower if you intend to carry the mower.
c) Carry the mower by the handle at the rear under the mower. Carry the mower with the blade disc away from the body.

RF exposure requirements

To satisfy RF exposure requirements, a separation distance of 200mm or more should be maintained between this device and persons during device operation.
To ensure compliance, operatons at closer than this distance is not recommended. The antenna used for this transmitter must not be co-located in conjunction with any other antenna or transmitter.

This is a class III appliances and it must only be supplied at safety extra low voltage corresponding to the marking on the appliance.

Safety Warnings for battery pack inside the tool

a) Do not dismantle, open or shred battery pack.
b) Do not short-circuit a battery pack. Do not store battery packs haphazardly in a box or drawer where they may shortcircuit each other or be short- circuited by conductive materials. When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
c) Do not expose battery pack to heat or fire. Avoid storage in direct sunlight.
d) Do not subject battery pack to mechanical shock.
e) In the event of battery leaking, do not allow the liquid to come into contact with the skin or eyes. If contact has been made, wash the affected area with copious amounts of water and seek medical advice.
f) Keep battery pack clean and dry.
g) Recharge only with the charger specified by Kress. Do not use any charger other than that specifically provided for use with the equipment.
h) Do not use any battery pack which is not designed for use with the equipment.
i) Keep battery pack out of the reach of children.
j) Retain the original product literature for future reference.
k) Dispose of properly.
l) Do not mix cells of different manufacture, capacity, size or type within a device.
m)Keep the battery away from microwaves and high pressure.
n) Warning! Do not use non-rechargeable batteries.

User manual requirements for wireless product

a) Operation of this device is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

b) Caution: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
c) NOTE: This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment
off and on, the user is encouraged to try to
correct the interference by one or more of the
following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician for help.

Symbols

WARNING – robotic lawnmower can be dangerous if incorrectly used. Read through the Operator’s manual carefully and understand the content before using your robotic lawnmower.

WARNING – Keep a safe distance from the machine when operating.

WARNING – Operate the disabling device before working on or lifting the machine.

WARNING – Do not ride on the machine.

Class III appliance

Waste electrical products must not be disposed of with household waste. Please recycle where facilities exist. Check with your local authorities or retailer for recycling advice.

  Li-Ion battery. This product has been marked with a symbol relating to ‘separate collection’ for all battery packs and battery pack. It will then be recycled or dismantled in order to reduce the impact on the environment. Battery packs can be hazardous for the environment and for human health since they contain hazardous substances.

Do not burn.

Batteries may enter water cycle if disposed improperly, which can be hazardous for ecosystem. Do not dispose of waste batteries as unsorted municipal waste.

 Do not wash the machine with a high pressure washer

 Read operator’s manual

 Detachable supply unit

 Prohibit disassembling the machine without authorization

Component list

1. Ultrasonic Sensor
2. Charging Strips
3. Rear Driving Wheel
4. Rain Sensor
5. STOP Button
6. Display
7. Keypad
8. ON/OFF Key
9. START Key
10. Front Whee
11. Blade Turning Disc
12. Battery Pack*
13. Handle
14. Cutting Blade
15. Charging Pile
16. Contact Pins
17. Charging Base
18. Power Adapter
19. Charging Base Fixing Nails
20. RTK Antenna
21. Hex Key
22. Wrench for RTK anten
23. Magnetic Strip
24. Staples
25. Hexagon Screwdriver
26. Buckle

*Not all the accessories illustrated or described are included in standard delivery.

Technical Data

Technical Data For Mower

Type KR233E KR236E (100-299 – designation of machinery, representative of Robotic Lawnmower)

| KR233E| KR236E
---|---|---
Rated voltage| 20V Max.
No load speed| 3200/min| 3600/min
Cutting area| 12000m2| 24000m2
Cutting diameter| 35 cm
Cutting height| 30-60 mm
Cutting Height Positions| 7
Battery type| Lithium-ion
Battery model| KA3010| KA3210
Charging time approx.| 84 min.| 30 min.
Charger model| KA3717 / KA3817| KA3722 / KA3723
Charger rating| Input: 100-240V~50/60Hz,
230W,
Output: 28V, 7.0A| Input: 220-240V~50/60Hz,
640W,
Output: 32V, 20.0A
Machinery weight| 20 kg| 21.8 kg
Protection degree| III
App| Y
Frequency bands for Bluetooth| /| 2400-2483.5 MHz
Maximum Output Power for Bluetooth| /| 8 dBm
Maximum slope within the work surface| 40%

• Voltage measured at no load. Initial battery voltage reaches maximum of 20 volts. Nominal voltage is 18 volts.
  ** Under standard temperature (101kPa, 25°C) startup condition. High temperatures can trigger the throttling protection mode, which may potentially prolong the charging time.
  *** Under standard temperature (101kPa, 25°C) startup condition.

Technical Data For Antenna

Technical data for 4G-GPS

Noise data

| KR233E| KR236E
---|---|---
A weighted sound pressure| LpA = 50.6 dB (A), KpA= 3.0 dB(A)| LpA = 56.6 dB (A), KpA= 3.0 dB(A)
A weighted sound power| LwA = 58.6 dB (A), KwA= 3.0 dB(A)| LwA = 64.6 dB (A), KwA= 3.0 dB(A)
Wear ear protection when sound pressure is over| 80dB(A)

A degree of noise from the machine is not avoidable. Route noisy work is to be licensed and limits for certain periods. Keep rest periods and they may need to restrict the working hours to a minimum. For their personal protection and protection of people working nearby, an appropriate hearing protection shall be worn.

Accessories

| KR233E| KR236E
---|---|---
Screws for fixing disk| 6| 6
Screws for fixing blades| 36| 36
Charging base| 1| 1
Charging base fixing nails| 8| 8
Hex key| 1| 1
Wrench for RTK antenna| 1| 1
Magnetic strip| 1| 1
Blade| 36| 36
RTK antenna| 1| 1
Hexagon screwdriver| 1| 1
Measurement gauge| 2| 2
Staples| 16| 16
Battery pack (KA3010)| 1| /
Battery pack (KA3210)| /| 1
Charger (KA3717/KA3817)| 1| /
Charger (KA3722/KA3723)| /| 1

We recommend that you purchase genuine accessories listed in the above list from the same store that sold you the tool. Refer to the accessory packaging for further details. Store personnel can assist you and offer advice.

Intended Use

The garden product is intended for lawn mowing. It is designed to mow often, maintaining a healthier and better looking lawn than ever before. Depending on the size of your lawn, MissionTM RTKn may be programmed to operate at any time or frequency. It is not intended for digging, sweeping or snow cleaning.

Maintenance

Your MissionTM RTKn
works hard and needs to be cleaned and checked from time to time. Some parts will require replacement as they become worn. Never use your MissionTM RTKn with defective on/off switch.
Switch off the machine before carrying out any service or maintenance.
Here’s how to take care of your MissionTM RTKn.

Keep it Sharp

WARNING: Before cleaning, adjusting, or replacing the blades, turn your MissionTM RTKn OFF and put on protective gloves.
WARNING: When fitting new blades, make sure you replace ALL the blades. Always use new screws when fitting blades. This is important to ensure blade retention and balance the blade turning disc. Failure to use new screws could cause serious injury.

The MissionTM RTKn does not cut grass like other mowers. Its cutting blades are razor sharp on 2 edges and rotate in both directions for maximum cutting capacity. Redesigned blade profile better prevents grass clippings from getting caught in the gap between the disc and the blade. And with new material, the service life of each cutting blade will be longer than that of other brands’ when it is programmed to mow every day. Always check to see if the blades are chipped or damaged and replace them if they are. When the cutting blades are dull and worn out, they should be replaced with the spare blades provided with your MissionTM RTKn
. Spare blades are also available at your nearest Kress retailer.

A. Replace the blades

Usually your MissionTM RTKn ‘s blades need to be replaced every week, you can adjust the frequency of replacing the blade according to the cutting quality of the lawn. When replacing the blades, make sure to replace all of them at the same time. You can replace them with one of the spare blade kits and extra blade screws supplied with your MissionTM RTKn.

Before attempting to replace your MissionTM RTKn’s blades, turn the power off and put on protective gloves and follow these steps:

1. Gently flip the MissionTM RTKn over.
2. Remove the battery cover and remove the battery.
3. Take the 3 screws for fixing disk from each disk off seperately with a hexagon screwdriver.
4. Remove the two disks.
5. Take the 6 screws for fixing blades off with a screwdriver and remove the blades.
6. Firmly screw on the new blades and new screws for fixing blades.
7. Refit and firmly screw on the disks on the underside of MissionTM RTKn.
8. Refit the battery and the battery cover.

Important: After screwing the blade to the blade disc, make sure the blade is able to spin freely.

Keep it Clean

WARNING: Before cleaning, turn your MissionTM RTKn OFF. Put on protective gloves before cleaning the blade turning disc and do not rinse or flush with water.
WARNING! YOUR MissionTM RTKn can only be washed by using a hose! DO NOT use high pressure washer on your MissionTM RTKn. High pressure water can go inside the sealings and damage electronic and mechanical parts.

A. Cleaning the Body

Your MissionTM RTKn will live a much happier and longer life if it is cleaned regularly. Since your MissionTM RTKn is an electric machine, you will need to take care when cleaning. Hose water clean is supported. It is best to use a spray bottle filled with water. When cleaning the machine body, use a soft brush or clean cloth and avoid using solvents or polishes. Lastly, remove all build up of grass clippings and debris.

B. Cleaning the underside

Again, it is important that you power the MissionTM RTKn OFF and wear protective gloves before touching the blade turning disc. First, flip your MissionTM RTKn upside down to expose its underside. Here you will see the blade disc, the chassis, and the front wheel and driving wheels.
Clean everything thoroughly with a soft brush or moist rag. Hose water clean is supported.

Rotate the blade disc to ensure it rotates freely.
Check the blades spin freely around the fixing screws. Remove any obstructions.

IMPORTANT: Remove any stuck debris so that it does not cause a crack in the blade disc. Even the tiniest crack can decrease your MissionTM RTKn’s mowing output.

C. Clean the contact pins and the charging strips

Clean the contact pins located on the charging base and the charging strips located on the MissionTM RTKn using a cloth. Remove any built up grass clippings or debris around the contact pins and charge strips periodically to ensure the MissionTM RTKn successfully charges each time.

Battery Life

The heart of the MissionTM RTKn is its 20V Li-Ion Battery. For proper storage of the battery, make sure it is fully charged and kept in a cool dry place between (-20o C~+60o C).
NOTE: The recommended MissionTM RTKn operation temperature is between 0-55o C.

The life-span of the MissionTM RTKn ’s battery depends on various factors, such as:

• The length of the mowing season in your region
• Amount of hours the MissionTM RTKn mows per day
• Battery maintenance during storage

MissionTM RTKn can be charged manually.

1. Connect the charging base to a suitable power supply. The green light on the charging base will turn on.
2. Manually dock the MissionTM RTKn into the charging base while the MissionTM RTKn is powered off.
3. The green light on the charging base will be flashing and MissionTM RTKn will begin to charge.
   WARNING: High temperature, do not touch. (Only for KR236E)

Winter Hibernation

Your MissionTM RTKn will live longer and healthier if it is allowed to hibernate. So even though it is tough, we recommend storing your MissionTM RTKn in your shed or garage during the winter.
Before you prepare your MissionTM RTKn for winter hibernation, we recommend you:

• Thoroughly clean your MissionTM RTK
• Fully charge the battery
• Turn the power off

To maximize the battery life, fully charge the battery before storage during winter.

WARNING: Protect the underside of MissionTM RTKn from water. NEVER store MissionTM RTKn upside down outdoors.
NOTE: When bringing the MissionTM RTKn back to work after winter hibernation, make sure the charging strips and contact pins are clean. We recommend using a fine grade emery cloth to clean the contacts. Using the app, make sure the date and time are correct and send MissionTM RTKn back to what it loves doing: mowing.

Replacing the battery

WARNING: Power off before attempting any adjustment, replacement or repair.
Before replacing the blades, turn your MissionTM RTKn OFF and put on protective gloves.

If you need to replace the battery, follow these steps:

1. Gently turn your MissionTM RTKn upside down.

2. Remove the screws on the battery cover.
   Remove the battery cover.

3. Remove the screws on the sheet metal.
   Remove the sheet metal.

4. Unplug the connector. Replace the old battery with the new one. Then plug the connector.
   (Only for KR233E)

Unplug the connector. Replace the old battery with the new one, lift the new battery slightly then plug the connector. (Only for KR236E)

5. Refit the sheet metal. Place the cover back in its position and tighten the screws.

Troubleshooting

If your MissionTM RTKn does not work correctly, follow the trouble shooting guide below. If the fault persists, contact your dealer.

the charging base is connected properly to the charger and the charger is connected to a suitable power supply.
MissionTM RTKn cannot correctly dock with the charging base.| The magnetic strip is placed in the wrong direction.| Check if the magnetic strip is placed in the wrong direction. When correctly placed, the green stripe of the magnetic strip is facing away from the charging base.
Machine runs out of power but does not return to charging base.| No virtual charging base is mapped.| Rebuild the map and add the virtual charging base.
The length of the magnetic strip is less than 2.5 m.| The length of the magnetic strip should be guaranteed to be greater than 2.5 m.
When MissionTM RTKn is going downhill, it overruns the boundary line.| The angle of the border line is very sharp.| Try to avoid layout scenarios with sharp angles
After MissionTM RTKn is turned on, the start button is pressed, but MissionTM RTKn does not work.| MissionTM RTKn is outside the working area.| Move MissionTM RTKn inside the working area.
Poor positioning signal| Find an open place, wait for the positioning signal light to turn green, and then press start button
MissionTM RTKn does not give an alarm when it is outside the Geo fence.| The software of MissionTM RTKn itself is not the latest.| Update the software of the MissionTM RTKn .
MissionTM RTKn is powered off.| Turn MissionTM RTKn on.
MissionTM RTKn is parked in the middle of the obstacle.| The obstacles around MissionTM RTKn are relatively small, and MissionTM RTKn fails to get out of trouble.| Set the area where MissionTM RTKn is easily trapped as No-Go.
The sensor of MissionTM RTKn is abnormal| Detect MissionTM RTKn ‘s diagnostic page on the APP and check the sensor status
Unable to read log| The format of U-disk is not FAT32.| Convert the format of U-disk to FAT32.
MissionTM RTKn is parked around the wall and cannot be started, and the positioning light is always on red.| MissionTM RTKn works in the shaded area for too long, triggering the safety protection.| Try to avoid letting MissionTM RTKn mow in areas with too much shade.
There are too many walls or trees in the area, blocking the positioning signal.

Environmental protection

Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or retailer for recycling advice.

Declaration of conformity

We,
Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany

On behalf of Positec declare that the product,
Description Robotic Lawnmower
Type KR233E KR236E (100-299- designation of machinery, representative of Robotic Lawnmower) (Year, article number and month of serial number are placed on the back page. The complete serial number is clearly stated on the enclosure of lawnmower) with battery charger KA3717 / KA3817 / KA3722 / KA3723 and charging base KA0075 / KA0078 Function Cutting grass

Complies with the following Directives,
2006/42/EC, 2014/30/EU, 2014/35/EU, 2011/65/EU&(EU)2015/863,
2000/14/EC amended by 2005/88/EC, 2014/53/EU

• Conformity Assessment Procedure as per

| Annex V| Annex V

• Measured Sound Power Leve

| 58.6 dB (A)| 64.6 dB (A)

• Declared Guaranteed Sound Power Leve

| 62 dB (A)| 68 dB (A)

Standards conform to,
For Lawn mower: EN 50636-2-107:2015+A1:2018+A2:2020+A3:2021, EN 60335-1:2012+A11:2014+A 13:2017+A1:2019+A2:2019+A14:2019+A15:2021, EN IEC 62311:2020, EN IEC 55014-1:2021, EN IEC 55014-2:2021, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A1:2019+A2:2021
For Ultrasonic module: EN 55011: 2016+A11:2020
For Bluetooth: EN 300 328 V2.2.2
For 4G+GPS module: EN 301 489-1 V2.2.3, EN 301 489-19 V2.1.1, EN 301 489-52 V1.2.1, EN 301 511 V12.5.1, EN 301 908-1 V13.1.1, EN 301 908-13 V13.1.1, EN 303 413 V1.1.1
For charger: EN IEC 55014-1:2021, EN IEC 55014-2:2021, EN IEC 61000-3-2:2019+A1:2021, EN 61000-3-3:2013+A1:2019+A2:2021, EN IEC 60335-2-29:2021+A1:2021, EN 60335-1:2012+A11:2014+ A13:2017+A1:2019+A2:2019+A14:2019+A15:2021, EN 62233:2008
For noise: EN ISO 3744:2005
For RoHS: EN IEC 63000:2018

the person authorized to compile the technical file,

Name Marcel Filz
Address Positec Germany GmbH Postfach 32 02 16, 50796 Cologne, Germany

2023/09/20
Allen Ding
Deputy Chief Engineer, Testing & Certification
Positec Technology (China) Co., Ltd.
18, Dongwang Road, Suzhou Industrial
Park, Jiangsu 215123, P. R. China

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