Problem Solving Guide; The Machine Doesn't Work; The Machine Doesn't Move Forward; The Brushes Don't Rotate - LAVOR Pro Comfort XXS 66 BT Handbuch

9.2

PROBLEM SOLVING GUIDE

These indications make it easier to understand the
underlying causes of some problems based on spe-
cific type of inconvenience. For the type of corrective
action to take please refer to the specific sections
described below.
9.2.1

THE MACHINE DOESN'T WORK

 The key is not inserted or incorrectly turned.
 Insert and turn the key to position "1".
 The battery connector is disconnected or poorly
attached to the main wiring connector.
 Firmly connect the two connectors.
 The emergency/work stoppage button is pressed.
 Disengage the emergency/work stoppage button.
 The machine is charging.
 Complete the charging operation.
 The batteries are discharged.
 Charge the batteries.
 No operator in the driver's seat.
 Sit in the driver's seat.
 The main fuse is burned.
 Replace it.
 The control card has overheated.
 Check the operating situations that may have
caused the malfunction (high slope, etc.). Wait 30
minutes and try to avoid the same incorrect opera-
tions. If the problem persists, contact the authorised
service centre.
9.2.2 THE MACHINE DOESN'T MOVE FOR-
WARD
 The direction selection lever is in the neutral po-
sition.
 Select a running direction.
 The advancement pedal is not pressed.
 Press the pedal.
 The floor slope is too steep.
 Manually push the machine to the new level.
 The thermal breaker of the drive motor is tripped.
 Stop the machine, allow it to remain inactive for
5 minutes, replace the fuses.
 The advancement pedal microswitch is broken.
 Replace it.
 The batteries are dead.
 Charge the batteries.
 The accelerator pedal was pressed when the ma-
chine was turned on.
 Release the accelerator pedal, turn off and restart
the machine.
 The accelerator pedal potentiometer is malfun-
ctioning.
 Replace the potentiometer.
 The drive motor was not stopped when the ma-
chine was turned on.
 Place the machine on a flat surface, turn it on and
off again with the key.
9.2.3

THE BRUSHES DON'T ROTATE

 The brush motor switch is not selected.
 Press the button to activate the brushes.
 The machine is not moving forward and the con-
trol tripped to avoid damaging the floor.
 Press the advancement pedal.
 The brush motor thermal breaker tripped; the
motor overheated.
 Troubleshoot the cause (cords or similar items
that impede movement, surface too rough, etc.) and
press the reset breaker.
 The transmission belt is broken.
 Replace it.
 The motor relay or the brush motor is broken.
 Replace it.
9.2.4 NOT ENOUGH OR TOO MUCH DE-
TERGENT
 The detergent solution tank is empty.
 Fill the detergent solution tank after having
emptied the recovery tank.
The brushes or the machine has stopped.
 Activate the brushes and press the accelerator.
 The flow adjustment lever is closed or almost
closed.
 Adjust/increase the detergent solution outlet flow
as required.
 The detergent solution filter is clogged.
 Clean the filter.
 The detergent feed conduit is clogged in some
point.
 Clean out the conduit by removing the dirt.
 The flow opening solenoid valve is burned.
 Replace it.
9.2.5

NO SUCTION

 The suction hose is not connected to the squee-
gee.
 Connect it correctly.
 The suction hose, the squeegee conduit or the
inspection compartment is clogged.
Clean out and remove any obstructions from the
conduits.
 The suction motor is turned off.
 Activate it.
 The recovery tank is full.
 Empty it.
 The suction motor is not receiving electric power
or is burned.
 Check the connections and, for the latter case,
replace the motor.
9.2.6

INSUFFICIENT SUCTION

 The recovery tank cover was not correctly tighte-
ned.
 Tighten it correctly.
 The recovery tank drain hose plug is not perfectly
closed.
 Close it correctly.
 The suction hose, the squeegee conduit or the
inspection compartment is clogged.
 Clean out and remove any obstructions from the
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