User manual

31
Troubleshooting
Problem Possible Cause Remedy
Tripped Control Power circuit breaker Reset breaker
Batteries have low charge Recharge batteries
Machine does not operate
Battery charger operating Unplug battery charger when charge
is complete
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
Vacuum motor does not turn
on
Squeegee in raised position Lower squeegee
Foot pedal not in “home” position Place pedal in notch
Tripped brush motor circuit breaker Reset breaker
Broken brush motor switch Replace switch
Brush does not unload
Damaged brush block or drive hub Replace
988720UM - ES 1720 User Manual - REV STAR 0707.pmd 7/19/2007, 4:20 PM31