LawnMaster Instruction Manual

Diagram of Robotic Lawnmower Components (Refer to Page 2)

The robotic lawnmower features the following numbered components:

• 1. Carry Handle
• 2. Cutting Height Adjustment Knob
• 3. STOP Button ?
• 4. Control Panel
• 5. Ultrasonic Object Sensors
• 6. Grass Detection Camera
• 7. Rear Wheel
• 8. Battery Compartment Cover
• 9. Isolator Key
• 10. Battery Compartment
• 11. Front wheel
• 12. USB Port (Covered by Rubber Cap)
• 13. Blade Disc
• 14. Blades and Screws (x6, 3 Pre-installed on Blade Disc)
• 15. Battery Pack(s)
• 16. Battery Release Button
• 17. Battery Power Indicator
• 18. Battery Charger
• 19. Instruction Manual

* Not Supplied with VBRM16-BM. x 2 supplied with VBRM16C2

** Not Supplied with VBRM16-BM

Mowing Area Preparation and Definition (Refer to Figs. 1-6)

Lawn Surface:

• The lawn surface should be as uniform as possible. Bare patches and leaves can disrupt the mower's operation. Clear leaves at regular intervals and repair dead patches with grass seed.
• Inspect the lawn for holes or hollows. Fill them with topsoil to prevent rainwater from forming pools of water on the lawn and to prevent the mower from becoming stuck. The mower may be damaged if operated in pools of water (Fig. 1 ❌).
• If there are stones on the lawn that may damage the mower, they should be removed or excluded from the working area (Fig. 2 ❌).

NOTE: This mower is not designed to cut excessively long or overgrown and neglected areas. For best performance, mow or trim grass down to 60mm before use. Do not allow grass to grow excessively long between uses.

Define the Mowing Area:

• Lawn edges must be clearly defined by flat edging or raised barriers for proper mower function.
• Visual boundaries need to look different from grass; changes in colour and texture are effective.
• Physical boundaries help stop the mower when a visual boundary is not possible.
• Temporary physical boundaries can be used while the lawn boundary definition is improved.

The robotic mower uses the following devices to detect edges and know where to mow:

• Grass detection camera: Recognizes changes in surface type (e.g., from grass to paving).
• Two ultrasonic object sensors: Detect obstacles higher than 6 cm. They are on by default and sense plants, shrubs, and other obstacles in and around lawn edges. For a consistent cut, long grass must be cut before mowing, or the ultrasonic sensors must be turned off.

The ultrasonic sensors can be turned off if the lawn is clear of obstacles. In this case, hedges, walls, or similar barriers can be used as the working area border.

When the robotic mower detects no grass or an obstacle, it changes route randomly and starts mowing again in a new direction. The lawn must be checked and adjusted to allow the mower to move freely and recognize when there is no grass. Follow instructions for types of borders/protections:

• Paving: Requires a paved or wooden edge of at least 35 cm wide for safe stopping and direction change. Edges less than 35 cm wide must be widened or used with a barrier (Fig. 3 ✓).
• Raised barrier: With ultrasonic sensors on, a perimeter barrier above 6 cm can define the border (Fig. 4 ✓). If a barrier is shorter than 6 cm, replace or raise it, or add paving.
• Hedging: With ultrasonic sensors on, hedges can define the working area (Fig. 5 ✓). Foliage is often recognized as grass, so ultrasonic sensors must remain on when using hedges as borders.
• Fine gravel: If used as a border, ensure the width is more than 35 cm and has clear edges (Fig. 6 ✓). Avoid gravel with irregular edges (Fig. 7 ❌), as this can cause the mower to leave the area and damage the blade.
• Physical Bump Barriers: These physically obstruct movement and can be lower than 6 cm (undetectable by ultrasonic sensors) and narrower than 35 cm. The robot will bump, reverse, and turn.
• Temporary Physical Bump Barriers: Garden canes are effective for protecting areas like flower bulbs, spaced at 20 cm (Fig. 3 ✓).

Obstacles in the Mowing Area:

• Objects like trees (without raised roots) or vertical poles do not require exclusion with ultrasonic sensors on (Fig. 8 ✓).
• Exposed tree roots, wires, irrigation systems, etc., must be protected with paving, walls, or barriers to prevent damage to them and the mower (Fig. 9 ✓).
• The working area cannot be defined by holes or ditches. Ensure no objects like toys, tools, small stones, branches, or sprinklers are on the lawn or protruding from the ground, as they could impede the mower or damage the blade (Fig. 10 ❌).

NOTE: Avoid leaves accumulating on the lawn, as they may not be detected correctly. Remove leaves regularly.

Slopes:

• The mower can safely climb slopes of 35%. Steeper areas should be excluded (Fig. 11).
• Slope calculation: 35cm (Elevation) / 100cm (Length) = 35% (slope).

Pools and Ponds:

• Create appropriate borders to protect pools or ponds. Use raised barriers higher than 20 cm or flat edging (paving, gravel, or wooden boards) wider than 70 cm (Fig. 12 ✓).

It is important to make visual boundaries around ponds wide and obvious. Pond plants and algae may be interpreted as grass. Physical boundaries are recommended to prevent accidental water damage, which is not covered by the manufacturer's guarantee.

Install/Remove the Battery Pack (Refer to Figs. 13-15)

⚠️ WARNING: If any parts are broken or missing, do not attempt to attach the battery pack or operate the mower until parts are replaced. Failure to do so could result in serious injury.

Ensure the isolator key is not fitted before installing the battery.

To install the battery pack:

1. Lift the battery compartment cover.
2. Align the support rails within the battery compartment with the guides in the battery pack, then insert the battery pack into the compartment (Fig. 13).
3. Push the battery pack until you hear a “click”.
4. Insert the isolator key into the keyholes near the battery compartment (Fig. 14). NOTE: The isolator key only fits in one direction. Do not force it.
5. Close the battery compartment cover.

NOTE: Ensure the battery pack snaps firmly into place and is secured before starting operation.

To remove the battery pack:

1. Stop the mower. Lift the battery compartment cover and remove the isolator key.
2. Press the release button on the battery pack, grasp firmly, and pull out of the compartment (Fig. 15).
3. Close the battery compartment cover.

Operation

Control Panel (See Fig. 16):

• 1. START/ON: Long press for 3 seconds to power on. Press after selecting Auto Mow or Spot Cutting to start mowing.
• 2. Battery Indicator:
  • Green, Continuous: Sufficient power for mowing/ready.
  • Red, Continuous: Recharge required.
  • Red, Flashing: Battery temperature abnormal or electric core fault.
• 3. Auto Mow Button: Long press 2 seconds to select random auto cutting mode, followed by START/ON.
• 4. Error Indicator:
  • Off: Mower in normal operation.
  • Yellow, Continuous: Lift sensor activated, obstruction sensor activated, mower tilted, rear wheels lifted, mower fallen over, STOP button pressed, or mower cannot see grass.
  • Red, Continuous: Sensor error, motor fault, or operation system error.
• 5. Spot Cutting Button: Long press 2 seconds to select spot cutting mode, followed by START/ON.
• 6. Ultrasonic Indicator:
  • Green, Continuous: Ultrasonic function is on.
  • Off: Ultrasonic function is turned off.
  • Yellow, Flashing: Communication issue with camera.
• 7. Ultrasonic On/Off Button: Single press to turn ultrasonic function on/off.

Switching On/Off:

• To switch on, press the START/ON button for 3 seconds. Indicators will flash; the camera system takes approx. 15 seconds to start. NOTE: Wait for startup; attempting to start during this time will cause an error.
• The mower is ready when the battery indicator is solid green and the mower beeps.
• To switch off, lift the battery compartment cover and remove the isolator key.

Starting/Stopping the Mower:

⚠️ WARNING: Read safety instructions carefully before starting.

⚠️ WARNING: Keep hands and feet away from rotating blades. Never put hands or feet near or under the mower when running.

⚠️ WARNING: Never use the robotic lawnmower when people, especially children or pets, are in the cutting area.

• Ensure the battery pack and isolator key are properly installed.
• Place the mower in the defined mowing area.
• Press START/ON for 3 seconds. Indicators flash; camera system starts up (approx. 15 seconds). Mower is ready when battery indicator is solid green and it beeps.
• Select cutting mode (Auto Mow or Spot Cutting) by pressing the respective button for 2 seconds, then press START/ON to begin mowing.
• To stop during operation, press the STOP button ?.
• To turn off, lift the battery compartment cover and remove the isolator key.

NOTE: If the mower is stuck or stopped for more than 20-25 minutes, it will automatically go into Stand By (power off). To turn on again, follow the startup instructions.

Cutting Modes:

• Auto Cutting: Mows the lawn in a random pattern. After powering on, press Auto Mow (2 sec), then START/ON. Blades spin after 5 seconds of running. The mower searches for a suitable area; if no grass is found within 5 seconds, it changes direction. Blades only spin after running continuously for at least 5 seconds.
• Spot Cutting: Mows in a spiral outwards from its position. Best for tidying up areas missed during random mowing. After powering on, press Spot Cutting (2 sec), then START/ON. Mower moves 10-20 cm forward, then starts spot cutting approx. 2 sq. meters. After finishing, it reverts to random mowing. If the area is too narrow, it will automatically switch to random mowing. NOTE: Spot cutting can be used before random mowing to systematically cut main areas, reducing overall mowing time and improving lawn finish.

Setting the Cutting Height (See Fig. 17):

⚠️ WARNING: Do not adjust height without stopping the motor. Keep feet away from the blade disc.

• Cutting height is adjustable from MIN (20 mm) to MAX (60 mm) (Fig. 17).
• During the first weeks, select a higher cutting height (e.g., 40 mm). Lower it gradually each week.
• Press the STOP button ? to stop the mower.
• Turn the cutting height adjustment knob to set height: Turn clockwise to raise, anti-clockwise to lower.

For the first cut each season, select a higher cutting setting. Using a cutting height that is too low in longer grass uses more power and reduces battery run time.

Before mowing, check blade sharpness and fastener condition. Replace blunt/damaged blades for balance. To check, switch off the mower by removing the isolator key.

Battery Pack Operation:

Battery Charging:

⚠️ WARNING: Use only the 24LFC12 battery charger approved by the manufacturer.

• The supplied charger is designed for the lithium-ion battery. Using it with a non-compatible battery may cause fire.
• Check power voltage; chargers operate on 220-240V AC.
• Ensure the battery is charged between 4°C and 40°C for optimal service life.
• Protect the battery from heat, continuous sun exposure, and other heat sources. Do not leave the battery in direct sunlight for long periods.
• The battery is supplied partially charged. Charge fully before first use for full capacity. Lithium-ion batteries can be charged anytime without reducing service life. Interrupting charging does not affect the battery.

Battery LED Indicators:

• The battery has a charge-level indicator panel with 4 LEDs. Press and hold the charge indicator button to activate. LEDs turn off after release.
• Indicator Lights:
• 4 LEDs (2 green): Fully charged
• 3 LEDs (1 green): ≥ 50%
• 2 LEDs (orange & red): ≥ 25%
• 1 LED (red only): < 25%, Recharge required.

Charger Operation (See Fig. 18):

⚠️ WARNING: Use only approved batteries (24LB4005, 24LB4005-C, 24LB2004, 24LB2004-C). Do not operate a damaged charger. Failure to comply may result in serious injury. Check voltage against the rating label.

• Align the battery pack slot with the charger rail. Slide the battery onto the rail until it secures (Fig. 18).
• Connect the charger to the power supply.
• Allow sufficient charging time (see Technical Data), then disconnect the charger.
• Press the release button on the battery pack and remove it from the charger.

NOTE: It is normal for the battery pack and charger to warm up during charging. If the battery does not charge properly, check the electrical outlet. Always charge the battery before storage.

Charger Indicator Lights:

• Red, flashing: Charging paused.
• Red, continuous: Connected to power supply (Standby).
• Green, flashing: Charging.
• Green, continuous: Fully charged.

The intelligent charger measures battery level, temperature, and voltage for optimal battery life. A flashing red LED indicates battery temperature is outside the 4°C - 40°C range; charging will resume when the temperature is within range. If flashing red persists, remove/reinstall battery. If it repeats, try another battery. If the battery charges normally, dispose of the defective one. If flashing red continues after installing a second battery (and temperature is normal), the charger may be defective; replace it. Chargers may warm up during continuous charging; this is normal.

Maintenance

⚠️ WARNING: Always switch off the product, remove the isolator key and battery pack, and let the product cool down before inspection, maintenance, or cleaning.

⚠️ WARNING: Use manufacturer-recommended replacement parts for worn or damaged components. Using other parts may create hazards or cause product damage.

⚠️ WARNING: Do not use attachments or accessories not recommended by the manufacturer. Use of such items can result in serious personal injury.

General Maintenance:

• Keep safety devices and motor housing free of dirt and dust. Avoid solvents on plastic parts. Use clean, dry cloths for dirt, dust, oil, grease.
• Periodically check nuts and bolts for tightness.
• Remove grass and leaves from the mower. Wipe clean with a dry cloth. Do not use water.

Replacing the Mower Blades (Refer to Fig. 19):

⚠️ WARNING: Wear protective, heavy gloves when performing blade maintenance. Failure to heed this warning could result in serious personal injury.

⚠️ WARNING: Ensure the isolator key and battery are removed before maintenance. Failure to heed this warning could result in serious personal injury.

• Check blade condition. Replace blunt, damaged, or imbalanced blades. Use only recommended replacement blades.
• Replace all 3 blades and screws simultaneously for balance. Visit www.cleva-europe.com for blade purchase information.

To replace the blades:

• Press the STOP button ? and let the blade stop completely.
• Lift the battery compartment cover, remove the isolator key and battery.
• Turn the mower over onto a soft, clean surface.
• Use a tool (e.g., screwdriver) in one of the three holes in the blade disc to fix it in place, preventing it from turning during blade replacement (Fig. 19).
• Wear protective gloves and use a screwdriver or hexagonal socket wrench to remove all three screws and blades (Fig. 20).
• Secure new blades with new screws.
• Ensure all blades can spin freely.

Cleaning the Underside:

• Regularly check and clean the underside.
• Press STOP ?, let the blade stop, lift the battery cover, remove the isolator key and battery.
• Turn the mower over onto a soft, clean surface.
• Use a soft brush or damp cloth to remove dirt, dust, oil, grease from the underside. IMPORTANT: Do not wash the mower with running water.
• Wear safety gloves to clean the blade disc, chassis, and wheels with a soft brush or damp cloth. Remove lodged debris.
• Ensure the blade disc rotates freely and all blades spin freely.

Storing the Mower (Refer to Fig. 21):

• Store the mower indoors between uses.
• Before storing, remove the isolator key and battery pack.
• Clean the mower thoroughly.
• Use the carry handle to carry the mower, with the blade disc away from the body (Fig. 21).
• Store indoors in a clean, dry place, out of reach of children. IMPORTANT: Protect the underside from standing water. NEVER store the mower upside down outdoors.

Battery and Charger Maintenance:

• Keep battery and charger clean and free of debris. Do not allow foreign material into cavities or on contacts. Wipe with a dry cloth. Do not use solvents or water.
• Always unplug the charger when no battery is connected.
• Check charger and battery contacts for shorts from debris or foreign material. Store away from metal objects.
• Always remove the battery when storing the mower. Keep in a cool, dry place out of direct sunlight.
• Store the battery between 0°C and 25°C, not in direct sunlight.
• Store lithium-ion battery packs at 30%-50% charge.
• Fully charge the lithium-ion battery pack after every six months of storage.

Updating the Software (Refer to Fig. 22):

• Software can be updated if necessary.
• NOTE: Ensure the USB flash drive works and the mower is switched on (START/ON for 3 seconds) before updating.
• NOTE: Ensure the battery indicator is green and the mower has sufficient power for the update.
• Download the latest software from the support website onto a blank USB flash drive.
• Stop the mower and remove the isolator key.
• Turn the mower upside-down. Wear protective gloves and open the USB port rubber cap (Fig. 22).
• Insert the isolator key. Press START/ON for 3 seconds, wait 15 seconds for power-on (indicated by green battery light and beep). Insert the USB flash drive into the USB port; you will hear four beeps. Software updates when all three indicators flash.
• After updating, you will hear continuous beeping and the battery indicator will be solid green.
• Remove the USB flash drive. Replace the USB port rubber cap. To complete the update, restart the machine by removing and reinserting the isolator key.

Troubleshooting

⚠️ WARNING: Only perform steps in this manual. Further inspection, maintenance, and repair must be done by a qualified specialist. Wear gloves and protective clothing. Turn off the mower before any adjustment. Visit www.cleva-europe.com for parts.

Technical Data

DIMENSIONS

• Length: 42.5 cm
• Width: 35 cm
• Height: 22 cm
• Weight (Without 4.0Ah Battery): 6.1 kg

MOWING

• Voltage: 24 V ===
• No Load Speed: 3500/min
• Cutting System: 3 Pivoting Cutting Blades
• Cutting Width: 16 cm
• Cutting Height Adjustment: 20-60mm (5 Positions)
• Power Consumption during Cutting: 40 W±20%
• Maximum Slope for Cutting Area: 35%
• Working Capacity per 4.0Ah battery charge: < 100 m²
• Average Mowing Time (2 cm Dry cut): 180 min
• IP-Classification: IPX4

CHARGER

• Model No.: 24LFC12
• Charger Input: 200-240V~50/60Hz 110W
• Charger Output: 24V 4.0A
• Charging Period (Battery Fully Discharged): 60min (For 24LB4005-C)
• Weight of Charger: 0.5kg
• Insulation Protection of Charger: [Symbol for double insulation]

BATTERY

• Model No.: 24LB4005-C
• Rated Voltage of Battery: 24V ===
• Capacity of Battery: 4.0Ah
• Battery Type: Lithium-Ion
• Weight of Battery: 0.7kg

NOISE EMISSIONS MEASURED IN THE ENVIRONMENT AS SOUND POWER

• Sound Power Level (LWA) Measured: 64 dB(A)
• Noise Emissions Uncertainties KWA: 3 dB(A)
• Sound Power Level (LWA) Guaranteed: 68 dB(A)
• Sound Pressure Level (LPA) at the Operator's Ear: 57 dB(A)

Noise emission declarations conform to EN 50636-2-107:2015. Noise emissions in the environment measured as sound power (LWA) conform with EC directive 2000/14/EC. The guaranteed sound power level includes production variation and test code variation (1-3 dB(A)). Sound pressure noise uncertainties KpA: 2-4 dB (A).

Recycling and Disposal

• This marking indicates that the product should not be disposed of with other household wastes. The machine must be delivered in rigid packaging to avoid damage during transportation. Packaging and machine are made from recyclable materials and should be disposed of accordingly.
• This appliance contains a Lithium-ion battery. Do not dispose of batteries in household waste, fire, or water. Dispose of batteries according to local regulations for environmentally friendly recycling.

Manufacturer Information

Suzhou Cleva Precision Machinery & Technology Co., Ltd.

No.18, Huahong Street, Suzhou Industrial Park,

215000 Suzhou P.R.China

www.cleva-europe.com