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CHECKING OPERATION
1.
ELECTRIC SYSTEM SAFETY
The machine has two amperometric safety switches installed in the electric system (below the
solution tank). These cut off power to the brush motor (1) and to the suction motor (2) when a preset
load is exceeded. The reset push-button must be pressed in order to give power back to the motor. If
the switch cut off power several times in a row then you must call the COMAC Service Center.
In models with amperometric card, there are not the two safety amperometrics switches anymore.
The restoration of the motors happens in automatic after switch off the machine and wait around 40
seconds for the cooling of the protection inserted in the electric card. In case in which the machine
blocks itself several times, it is necessary to apply to a COMAC service center.
2.
INSUFFICIENT WATER ON THE BRUSHES
1.
Check that the solution tank is clean
2.
Check that the solenoid valve switch is turned on
3.
Check the quick fitting connection is properly engages
4.
Check the adjustment screw on the cock that supplies water
3.
THE MACHINE DOES NOT CLEAN WELL
1.
Check the condition of the brushes. Replace them as required. Brushes must be replaced when
bristles are about 15mm high
4.
THE SQUEEGEE DOES NOT DRY THE FLOOR PERFECTLY
1.
Check that the squeegee rubbers are clean
2.
Check that the suction tubes are properly inserted in their seats on the squeegee
3.
Check that the distributor is clean
4.
Replace the rubbers if they are worn
5.
TOO MUCH FOAM IS GENERATED
Check that low-foam detergent is being used. If necessary add a small amount of foam-retardant
liquid to the recovery tank.
Remember that more foam is generated when the floors is not very dirty. Dilute the detergent more
when cleaning floors that are not very dirty.
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