Century OPERATING INSTRUCTIONS CEXT7 - Manual (Page 20)

MAINTENANCE
86037910 CEXT7 03/23/07
4-3
!
WARNING:
ONLY QUALIFIED
MAINTENANCE
PERSONNEL ARE TO
PERFORM THE FOLLOWING REPAIRS.
VACUUM MOTOR REPLACEMENT
1. Turn off all switches and unplug machine.
2. Remove recovery tank.
3. Remove the (2) screws that fasten the solution tank to
the frame, and tilt tank back to expose the inside of the
frame.
4. Locate the vacuum motor wires and disconnect at the
connector. Close the solution tank.
5. Remove the (6) screws holding the vacuum motor cover
(p/n 27809) to the solution tank.
6. Remove the vacuum motor.
7. Reverse process to install vacuum motor.
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]