Operating instructions

MAINTENANCE
COMANCHE 98931 03/23/04
4-2
Only qualified maintenance personnel are to
perform the following repairs.
SOLUTION PUMP REPLACEMENT
1. Turn off all switches and unplug the machine.
2. Unlatch the recovery tank from the base.
3. Tip recovery/solution tank to gain access to the
base of machine.
4. Remove solution hoses from fittings on pump.
Disconnect wires.
5. Remove the screws that fasten the pump to the
base.
6. Reverse process to install new replacement
pump.
VACUUM MOTOR REPLACEMENT
1. Turn off all switches and unplug machine.
2. Unlatch the recovery tank from the base.
3. Tip recovery/solution tank to expose vacuum (s).
4. Locate the proper vacuum motor wires and
disconnect.
5. Unfasten screws holding vacuum to plate.
6. Remove the vacuum motor.
7. Reverse process to install vacuum motor
replacement.
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)
Vacuum Motor Carbon Brushes Replacement (Ametek)
Note:
When replacing carbon brushes loosen wire
terminal BEFORE removing screws on bracket.
Note:
Place
stop in
groove.
Wire
Terminal
WARNING:
The green
ground wire must be
attached for safe
operation. See wiring
diagram.
End Cap
Carbon
Brushes
Wire Terminal
If armature commutator is grooved, extremely pitted or
not concentric, the motor will need to be replaced or
sent to a qualified service center.