Minuteman E17_E20_H20 Walk-Behind Scrubber Disc Traction Drive - Manual (Page 33)

33
Troubleshooting
Problem Possible Cause Remedy
Vacuum motor does not turn
on Recovery tank full Empty recovery tank
Excessive foaming in recovery tank. Empty recovery tank.
Use less or change chemical.
Use defoaming agent.
Carbon Brushes worn Replace carbon brushes
Vacuum switch disconnected Connect wiring
Tripped vacuum motor circuit breaker Reset breaker
Broken vacuum limit switch Replace switch by squeegee lift lever
Squeegee in raised position Lower squeegee
Brush does not unload Foot pedal not in “home” position Place pedal in notch
Tripped brush motor circuit breaker Reset breaker
Broken brush motor switch Replace switch
Damaged brush block or drive hub Replace
Retaining ring on brush motor shaft not
in groove Remove brush hub assembly and
slide ring into groove
Charger Warning Indicators
LED Status Description
Warning
RED LED lamp blink once
Output open circuit or short circuit or reverse polarity connection of
charger to battery. Battery voltage is too high (may be connected to
wrong voltage battery).
RED LED lamp blink twice
Abnormal cycle (may be weak or bad battery)
Charging time has safety timed out due to battery problem.