Berta MR18Z - Lawn mower Zoef Robot - Free user manual and instructions

Product type	Robot lawn mower
Brand	Zoef Robot
Model	Berta MR18Z
Cutting width	18 cm
Cutting height adjustment	20 to 60 mm
Maximum recommended area	600 m²
Weight	9.5 kg
Power supply	AC 100-240 V, 50/60 Hz
Battery type	Li-ion, 28 V, 2 Ah
Mowing autonomy	Approximately 45 minutes
Charging time	Approximately 45 minutes
Sound power level	60 dB(A)
Protection rating	IP56
Built-in sensors	Rain, collision, lift, tilt, slip
Programming	Automatic or manual start, area and time setting
Automatic return to base	Yes, with automatic recharging
Security code	4-digit PIN code (customizable)
Included accessories	100 m boundary wire, 150 pegs, 4 connectors, 2 clamps, 9 replacement blades with screws, power adapter, extension cable
Maintenance	Regular cleaning, replacement of blades every 2 months
Warranty	24 months (1 year for battery)

Frequently Asked Questions - Berta MR18Z Zoef Robot

How to set up the robot for the first time?

Place the charging station on a flat surface near an outlet. Lay the boundary wire around the mowing area (minimum distance 45 cm from the edge). Connect the wire to the station, plug in the adapter. Fully charge the robot (approx. 45 min). Turn it on, enter the default security code 0000, set the area and start time, then press START.

How to change the security code?

With the factory code 0000, start the robot. After a few meters, press STOP (error E1). Hold START for 10 seconds until U133 appears. Press SET, the lock icon flashes. Enter 0000 with OK, then press SET again. Enter your new 4-digit code and confirm with OK. Press START to resume. Write down your personal code.

What to do in case of error E1?

Error E1 means the emergency stop was activated. To resolve it, simply restart the robot by pressing the START button after verifying there is no danger.

How to clean the robot mower?

Turn off the robot and wear protective gloves. Clean it with a damp cloth (do not use solvents or water jets). Carefully clean the wheels and blades. For the charging station, unplug it before cleaning. Let everything dry completely before reuse.

When and how to replace the blades?

Check the blades every 2 months or if the robot is used daily. Turn off the robot, wear gloves. Turn it over, remove the screws and used blades. Place the new blades (3 per set) with the provided screws. Ensure they spin freely.

The robot does not start, what to check?

Check that the charging station is plugged in and the boundary wire is properly connected. Ensure the robot is correctly placed on the station or inside the wire zone. If the screen shows F1 or F2, see the error message section. If the battery is too low (F4), fully charge the robot.

What is the maximum area the robot can mow?

The maximum recommended area is 600 m². For smaller areas, you can adjust the zone in the settings (from 50 to 600 m²). The robot adapts its work time accordingly.

How to store the robot in winter?

Fully charge the robot, clean it, and store it in a dry place, frost-free and out of reach of children. Also store the charging station and power cord dry. Recharge the battery every 3 months to prevent deep discharge. Do not store the battery below -5°C or above 50°C.

The robot does not mow correctly, what to do?

Check that the cutting height is appropriate (2-6 cm). If the grass is too tall (>4 cm), mow first at maximum height. Clean the robot and blades. Make sure the rain sensor is not activated (after rain, the robot waits up to 48h). Check error codes: E4 (left motor overload), E6 (cutting motor overload), E7 (right motor overload) may indicate grass too tall or blockage.

Can I use the robot on a slope?

Yes, but the slope must not exceed 20 degrees. Beyond that, the tilt sensor triggers error E10 and the robot stops. For steep slopes, install the boundary wire following the contour lines. Avoid areas that are too steep.

USER MANUAL Berta MR18Z Zoef Robot

Close-up of a black and orange robotic lawn mower with visible blades and wheels (no text or symbols)

DE/EN/NL/FR

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Verlängerungskabel

Erstinbetriebnahme

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Ladestation fixieren

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Abdeckung entfernen

6

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Abdeckung aufsetzen

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Table of Contents Welcome

Technical Information 14

Welcome 14

Safety Instructions.... 15

Notice Signs on the Appliance 16

Warranty 16

Planning the Installation....17

Appliance Overview 18

Initial Set-Up 20

Status Messages / Error Messages .... 21

Automatic Start....22

Use 22

Manual Start 23

Cleaning....24

Storage 24

Replacing the Knife....25

Technical Information

Charging voltage ...... AC100-240V

Frequency 50/60 Hz

Height adjustment....20–60 mm

Cutting width....18 cm

Weight ....approx. 9.5kg

Maximum area 600 m2

Battery capacity....2 Ah Li-ion

Battery voltage....28 V

Charging time.....approx. 45 min

Operating time ....approx. 45 min

Sound power level LWA....60 dB(A)

Protection class IP56

You are purchasing a high-quality product, showing that you have high expectations to it. For effective and safe operation, read and follow these instructions and the safety instructions contained therein carefully. Keep this manual and the original packaging for future reference and for repackaging for transfer. We want you to choose our appliances and products in future as well.

Optional accessories

Safety information

EN

Persons aged 14 years or over with reduced physical, sensory or mental capabilities, lack of experience or knowledge may only use the appliance, clean or service it if they are supervised by a person who is responsible for their safety or if they have been shown how to use the appliance safely and they have understood the risks inherent in its use.

This appliance must not be used by children. Children should not play with the appliance. Keep the appliance and power cable away from children under 14 years old.

Periodically check the appliance for damage and tighten the screws. Never operate defective appliances.

Repairs on the appliance are only permitted by a specialist. Improper repairs may cause considerable dangers to the user.

Only use genuine accessories approved by the manufacturer.

If the appliance is used for purposes other than those specified by the manufacturer, operated incorrectly, or not repaired professionally, we will not accept any liability for any resulting damage. In this case, the warranty claim will be void.

Do not remove/deactivated any safety elements installed on the appliance (e.g. protective flaps/lids, safety switch).

Protection class III for increased appliance safety.

The appliance is not intended for commercial use.

Attention: Do not operate the appliance near any easily flammable liquids/gases or dust – danger of explosion!

Familiarise yourself with the appliance before initial use while the motor is turned off.

Warning: when the machines is running, people who have not read and understood the instructions carefully, please do not come within one meter of the running machine!

Attention: Always turn off the appliance and wait for standstill of the appliance parts for transport, maintenance, repair work, cleaning, emptying of the collection basket, partial or complete lifting of the appliance, passing of non-grass areas or unsupervised leaving of the appliance – danger of injury!

Do not put any objects and / or fingers into any openings of the appliance.

Securely hold the appliance, ensure a safe stance. Comply with the safety distance.

Do not etc. wear loose jewellery, clothing etc. and tie back long hair.

At clogs/scratches on an object: Turn off the motor at once, check the appliance for damage.

Never operate the appliance on wet or slippery/iced surfaces. Caution when working on steep slopes/uneven terrain.

Keep unauthorised persons/animals away from the working area. Turn off unused/unsupervised appliances.

Do not operate the appliance if you are drowsy, physically unwell, under the influence of drugs/alcohol/medicines, etc.

Comply with public provisions for resting times.

Only perform cleaning and maintenance work after complete standstill of the knife. Attention: The knife lags!

Allow the appliance to cool down before stowing it away.

Power supply: The voltage must correspond to the information on the charging station nameplate.

Check the charging station/power cable for damage. Never take the damaged charging station into operation. Repairs on the charging station only by specialists for reasons of safety.

Never pull on the mains cable, e.g. to pull the mains plug. Keep the mains cable away from hot surfaces/objects, oils, sharp edges and moved objects.

Safety information

We advise connecting the charging station to an earth leakage circuit breaker (max. 30 mA).

Only use a cable with a matching mains plug. NEVER modify the cable / mains plug!

Fluid leaks may occur during improper use of the battery. Body contact with this fluid must be avoided. In case of eye contact you must consult a physician.

Do not expose the battery to direct sunlight/liquids. Charge and store the battery at room temperature.

Do not keep the unused battery near any coils, keys, nails, screws or other metal objects.

Only use the genuine charging station and genuine battery.

Attention: Always remove the battery for transport, before setting the appliances, before replacing accessories, maintenance, partial or complete lifting of the appliance or when leaving the appliance unsupervised – danger of injury!

Battery safety circuit

The battery turns off automatically if it grows too hot, has too much current, is nearly drained.

Charge the battery every 3 months in order to avoid deep discharge. Do not store the battery in temperatures of less than -5 °C or above 50 °C.

Disposal/environmental protection

Never dispose of this appliance with household waste. Ask your municipal authority about the nearest official collection point and only use this. If appliances are disposed of unchecked, contaminants can leak out and poison the food chain, flora and fauna. Your point of sale is obliged to take back used appliances. We would therefore ask that you support us by making an active contribution to environmental protection by returning this appliance to the manufacturer. The manufacturer guarantees professional disposal according to the local directives. Professionally dispose of the battery in accordance with the local provisions. Not domestic waste!

Notice signs on the appliance

WARNING - Read the operating instructions before commissioning of the machine.

WARNING - Comply with a safety distance from the machine during operation.

WARNING - Do not ride on the machine.

WARNING - Turn off the machine before working on the machine or lifting.

Warranty for the appliance

This product was produced based on the highest quality standards. A manufacturer's warranty of 24 months is granted, starting on the date of the sale, when purchasing a new product. The warranty covers only defects that are due to material and/or manufacturing defects and non-compliance of promised properties. Wear parts are exempted from the warranty. When asserting a warranty claim the original receipt with sales date must be enclosed. Warranty repairs must only be performed by authorised workshops or service stations. A warranty claim only applies at intended use. The warranty shall not include any damage caused by the following events: Abuse, overload or neglect, commercial use (industry, trade, renting), repairs by unauthorised offices, damage by foreign bodies, substances or accidents. Warranty for battery 1 year.

Planning the Installation

EN

RecommendationCreate a sketch with working area and all obstacles in order to simplify the installation!

Note: Reinforcement armouring irons in subterranean buildings/adjacent boundary lines and power cables of other electrical appliances produce magnetic fields that may cause navigation interferences.

Note: Turn off the appliance during long periods of rain. The ground will be muddy after strong rain. The mowing output may be impaired under such circumstances, and the lawn appearance may suffer.

Appliance overview

EN

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100m boundary line

150 nails6 pegs

4 boundary line connectors

2 boundary line clamp

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9 replacement blades with screws

Mains adapter

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Extension cable

Initial setup

Please read safety instructions before setup. Check the appliance for completeness.

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Place the charging station

Comply with distances and alignment!
• Install the charging station level and near a power source!

2

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Place the boundary line under the charging station in a cable groove

Consider at least 50 cm reserve at the ends!

3

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Fasten the charging station

4

Place the boundary line taut with the nails

Place the boundary line <2 - 3 cm in the ground! Recommendation: Place the boundary line taut on the lawn. The boundary line will grow into the lawn.

5

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Remove the cover

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Place the wire in the clamp and close it firmly
Strip the boundary line if necessary!

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Connect the terminals

Connect the boundary line under the charging station to the plus
- connection! Connect a different cable to the minus connection!

8

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Connect the mains unit

• Correct installation
  Defective installation: (kink/interruption/loose contact)

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Apply the cover

Completely charge the robot before initial commissioning!

[Non-Text]

Status messages/error messages

EN

E1 Emergency off actuated Re-start the robot

E2 Lifting sensor triggered Rear wheel blocked or lifted? Restore the rear wheel then re-start the robot.

E3 Robot outside of the boundary line primeter. Place robot inside, restart

E4 Boundary line cut Red indicator LED flashes? Repair - boundary line, restart robot

ES Collision sensor triggered Obstacles? Re-start the robot

E6 Overcurrent on the left drive-motor. Grass too high? (>4cm)? Left wheel blocked? Re-start the robot

E7 Overcurrent on the right drive-motor. Grass too high? (>4cm)? Right wheel blocked? Re-start the robot

E8 Overcurrent at the cutting motor Grass too high? (>4cm)? Cutting sleeve blocked? Re-start the robot

E9 Error charging status Malfunction of the battery. Re-start the robot multiple times, if the issues persists, contact service.

E10 Over-/undercurrent of the robot. Malfunction on the PCB bodard. Restart the robot multiple times, if the issues persist, contact service.

E11 Tilting sensor tripped Inclination in excess of 20 degrees? Re- start the robot

E12 Wheel slipping Grass too high or too wet? Re-start the robot.

E13 Overheating on battery Wait for the battery to cool down. Re-start the robot.

F1 Robot does not start, signal present Robot is started outside of the boundary line or too far from it? Restart the robot.

F2 Robot does not start, no signal (charging station) Boundary line/mains adapter correctly connected?

F3 Robot does not start The power of robot mower is turned off previously? Bring it onto the charging station and restart it.

F4 Battery voltage too low Completely charge the robot

Re-start the robot

1. Place the robot on the boundary line Enter the safety code2. Push the start button3.

If the robot is turned off previously, it can only be started on the charging station.

Usage instructions

Observe the safety instructions!

1 Prepare the lawn

Ensure that there are not objects (pine cones, branches, rocks, etc.) that may damage the robot or be ejected by it. During the first mowing process, always set the cutting height MAX in order to avoid damage to the boundary line! Cut the lawn to m at most during first mowing.

2

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Set the cutting height (2 - 6 cm)

Recommendation: Do not set the cutting height too short in try weather in order to avoid drying out of the lawn!

3 Programme automatic start or:

Manual start

Emergency deactivation: Push the STOP button at once and turn off the robot in case of dangers, accidents or if the appliance vibrates strongly.
The robot returns to the charging station on its own for charging. Automatic resumption of mowing.
- Rain sensor - Robot returns to the charging station if it rains. Next start in the 48-hours interval.
■ Robot stops automatically at inclinations of > 20°!
■ Collision sensor! Robot moves around obstacles.
■ Danger of injury! Never reach into running knives.

Programme automatic start

After activation, the individual digits of the safety code must be entered! First connect the mains. Completely charge the robot before initial commissioning!

graph TD
    A["Activate"] --> B["Enter the safety code"]
    B --> C["Set area (50 - 600m²)"]
    C --> D["Setting the start time"]
    D --> E["Setting time"]
    E --> F["Push the start button"]

    G["Increase value"] --> H["HOME"]
    G --> I["START"]
    G --> J["OK"]

    K["Reduce value"] --> L["00001"]

    M["Confirm input"] --> N["08001"]

    O["SET"] --> P["SET"]
    Q["SET"] --> R["SET"]
    S["SET"] --> T["SET"]
    U["SET"] --> V["SET"]
    W["SET"] --> X["SET"]
    Y["SET"] --> Z["SET"]

Manual start

After activation, the individual digits of the safety code must be entered! First connect the mains. Completely charge the robot before initial commissioning!

graph TD
    A["Activate"] --> B["SET"]
    B --> C["Enter the safety code"]
    C --> D["Push the start button"]
    D --> E["Robot starts mowing."]
    F["Confirm input"] --> G["Increase value"]
    G --> H["HOME"]
    G --> I["START"]
    G --> J["OK"]
    H --> K["0000!"]
    I --> K
    J --> K

Back to the charging station

EN

graph TD
    A["Start"] --> B["SET"]
    B --> C["Enter the safety code"]
    C --> D["Push the "Home button""]
    D --> E["Robot stops mowing"]
    E --> F["Actuate the emergency off"]
    F --> G["Increase value"]
    G --> H["HOME"]
    G --> I["START"]
    G --> J["OK"]
    H --> K["00001"]
    I --> K
    J --> K
    K --> L["The robot returns and will start automatically at the next interval."]

If the robot is switched off, it must be started at the charging station.

Working time: 100 m^2 = 120 min . (mowing time + charging time).

If you want to change the code

Start by pressing the factory code 0000 + START.

The machine leaves the docking station and starts operating.

After a few meters • press STOP - error code E1 appears on the display.

- Press START and hold the START button for 10 seconds until the code U133 appears on the display.

- Press SET. The lock icon (image) flashes. Press the factory code 0000 one by one with OK, until 0000 is lit continuously.

- Press SET again and the lock icon flashes.

Now • press the 4-digit security code that you have personally chosen and then press OK.

Your personal security code has now been set and is lit continuously.

Finally, press START and the machine will continue to run.

Note: If you forget your personal code, the machine must be sent to the distributor to be reset.

Cleaning

i Important: Clean the robot at regular intervals. If too much grass collects, the mowing result will suffer.

Positioning

! Charge the robot fully first.

2 Store the robot, charging station and charging cable frost-protected

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The boundary line placed may be left on the lawn. Keep the appliance in a dry location outside of the reach of children, protected from direct sunlight and extreme temperatures!

Charge the battery every 3 months in order to avoid deep discharge. Do not store the battery in temperatures of less than -5 °C or above 50 °C. Remove the robot from the charger after charging.

Replace the knife/remove caught objects

EN

Turn off the on/off switch first and put on protective gloves.

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Reverse the robot, remove caught objects if necessary

2

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Release the screws, remove defective knives

Check the knives every 2 months and replace them
● at the same time if necessary if the robot is used every day. Replace defective knives at once.

3

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Insert new knives and new screws

3x

i Ensure that the knives turn and work properly!

Inhoud

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Verbind de adapter en kabel

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Maak de robot schoon

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Fixez la station de charge

4

150x

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Posez le couvercle

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Mechanical gear assembly diagram showing three downward arrows indicating rotational direction (no text or symbols)

Mechanical gear assembly diagram showing three downward arrows indicating rotational motion (no text or symbols)