The Brushes Don't Rotate; Not Enough Or Too Much Detergent; No Suction; Insufficient Suction - LAVOR Pro COMFORT M87 Manuel

was turned on (sequence of 5 red LED flashes).
Release the accelerator pedal, turn off and restart
the machine.
The accelerator pedal potentiometer is malfunctioning
(sequence of 6 red LED flashes).
Replace the potentiometer.
The drive motor(s) was (were) not stopped when
the machine was turned on (sequence of 1 or 2 red
LED flashes).
Place the machine on a flat surface, turn it on and
off again with the key.

9.3 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 control
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 first from the top).
The transmission belt is broken.
Replace it.
The motor relay or the brush motor is broken.
Replace it.

9.4 NOT ENOUGH OR TOO MUCH DETERGENT

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.

9.5 NO SUCTION

The suction hose is not connected to the squeegee.
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.

9.6 INSUFFICIENT SUCTION

The recovery tank cover was not correctly tightened.
Tighten it correctly.
The recovery tank drain hose plug is not perfectly
36
closed.
Close it correctly.
The suction hose, the squeegee conduit or the
inspection compartment is clogged.
Clean out and remove any obstructions from the
conduits.
9.7 THE BRUSH MOTOR OR THE SUCTION MOTOR
DOESN'T STOP
The relay switch is defective.
Stop the machine, cutting off the main power supply
and disconnecting the main battery connector, and
contact the technical service centre.
9.8 THE SQUEEGEE DOESN'T CLEAN OR DR Y
EFFICIENTLY
The squeegee blades are worn or are dragging solid
dirt.
Replace or clean them.
The squeegee adjustment is not correct; the
advancement must be exactly perpendicular to the
running direction.
Adjust the squeegee.
The suction hose, the squeegee conduit or the
inspection compartment is clogged.
Clean out and remove any obstructions from the
conduits.

9.9 THE BATTERY CHARGER DOESN'T WORK

The battery charge doesn't start ("BAT" message
on the display).
Check that the battery charger is connected to the
battery. Consult the battery charger manual.
9.10 THE BATTERIES DO NOT CHARGE OR DO NOT
HOLD A CHARGE
At the end of the charging process, the battery is
not correctly charged (see the battery manufacturer's
instruction-maintenance manual)
Check the battery charger error message and check
the data indicated on the display (see the battery
charger's instruction manual).
The batteries are new and do not generate 100%
of the rated performances.
The accumulator reaches the maximum performance
after 20-30 complete charge cycles.
The electrolyte has evaporated and does not
completely cover the plates.
Check the battery manufacturer's use and maintenance
manual.
There are significant differences in density among
the various elements.
Replace the damaged battery.
Always consult the battery and battery charger use and
maintenance manual. If this does not solve the problem,
contact the authorised technical service centre.
The manufacturer CANNOT solve problems caused
by using batteries and battery chargers that were
not directly supplied.