18
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 and to the suction
motor when a preset load is exceeded.
The restoration of the motors happen automatically after you switch off the machine
and wait around 40 seconds for the cooling of the protection inserted in the electric
card. In the case where the machine blocks itself several times, it is necessary to
contact a
PULLMAN-HOLT
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 engaged.
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 .5 inches 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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