Scrub System, Disc
79
Service Manual – SCRUBTEC R466 ... FOCUS II Micro Rider
Troubleshooting
Open circuit
•
The fuse (F1) determines an open in the supply circuit of the brush deck motors This system allows to
prevent the circuits from being damaged under overload conditions
•
The open in the fuse can be caused by the following:
◦
Short circuit in the brush motor wiring harness; fault in the motor
Trouble
Possible Causes
Remedy
All brushes do not turn
The brush motor electromagnetic switch wiring harness
is damaged
Repair
The function electronic board (EB1) is faulty
Replace
The wiring harness between function electronic board
(EB1) and brush motor electromagnetic switch (ES1) is
damaged
Repair
The brush motor electromagnetic switch (ES1) is
damaged
Replace
The brush motor fuse (F1) is open
Replace
One brush does not rotate
The motor carbon brushes are worn (replace).
Replace
Bulky debris or cords around the brushes or between the
brushes and its flange
Remove and clean the brushes
The motor is faulty
Repair or replace
The wiring harness is damaged
Repair
The brush cannot be lifted/lowered
See the Electrical System chapter,
function electronic board error
codes
The deck lifting/lowering actuator (M5) end-of-stroke
microswitches are broken
Replace the actuator
The deck lifting/lowering actuator (M5) is broken
Replace
Open circuit in the actuator wiring harness
Check the connections according
to the instructions in the Electrical
System chapter, Troubleshooting
paragraph
The actuator fuse (F4) is open
Replace
The function electronic board (EB1) is damaged
Replace
