Kärcher BRC 30 CUL, Operating Instructions Manual

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MAINTENANCE
86317460 BRC 30/15 CUL 11/10/07
4-4
VACUUM MOTOR REMOVAL
1. Turn off switch and unplug machine.
2. Set the machine in its upright position. Remove
the screws (2) in the back metal cover. Rotate
the cover down and slide back releasing the tab
under the machine from the main frame.
3. Remove the pump box cover. Remove screws
(4) at each leg of the cover.
4. Remove vacuum hose, loosen hose clamp and
pull hose from bottom of vacuum motor.
5. Unplug wires (2) from main harness located in
pump mount housing. Remove ground from
stud on main frame.
6. To remove the vacuum motor, remove the
screws (2) in the back of the machine that mount
the plastic cover to the solution tank.
7. Remove the screws (3) that mount the vacuum
motor to the plastic cover. Pull the cover off the
vacuum motor.
8. Unscrew the ground wire from the vacuum
motor.
9. Reverse the process to reinstall the vacuum
motor.
NOTE: Make sure the excess wire lengths do not
get pinched between the vacuum motor and plastic
cover.
The vac motor is protected by a circuit breaker
located in the switch panel. The breaker will only
trip under conditions of abuse.
Vacuum Motor Carbon Brushes Replacement
WARNING: The green
ground wire must be
attached for safe operation.
See wiring diagram.
End Cap
Carbon
Brushes
If armature commutator is grooved, extremely pitted or not
concentric, the motor will need to be replaced or sent to a
qualified service center.
Important:
These brushes wear quicker as the length shortens due to
increased heat. Spring inside brush housing will damage
motor if brushes are allowed to wear away completely.
Periodically check the length of the carbon brushes. Replace
both carbon brushes when either is less than 3/8" (9.5mm)
long
.
3
8
[9.5mm]