MAINTENANCE
49
5700XPS MM402 (3--96)
3. While the diagnostic is running, the three
speed switch indicators will flash. The
machine systems will activate as follows:
D
The brushes and squeegee raise.
D
The vacuum fan starts and the
squeegee lowers. The squeegee raises
and the vacuum fan shuts off.
D
The scrub head lowers and raises.
D
The brushes turn on and off.
D
The solution valve turns on and off.
D
The ES
t
pump turns on and off, if the
machine has the ES
t
option.
D
The vacuum fan starts and shuts off.
D
The brushes turn on and off.
4. If the electrical system passes the
self-diagnostic test, the system will cycle
through, turning on and off the squeegee
switch indicator, recovery tank full indicator,
and the scrubbing switch indicator.
If the self-diagnostic test finds an error in the
system, the error will be displayed by the
brush pressure switch indicators. Note which
of the indicators are on, and contact the
service personnel.
5. Turn off the diagnostic by turning off the
machine power.
ELECTRIC MOTORS
The carbon brushes on the vacuum fan motor
should be inspected after every 500 hours of
machine operation. The carbon brushes on the
scrub brush motors, power steering motor, and
propelling motor should be inspected after every
1000 hours of machine operation.
