Clarke US1500DC 01540A Operator's Manual page 12

ENGLISH
EN
2. Pull back each spring and pull the brush out of the
holder. Keep the lead wire connected.
3. Turn the pad driver and look at the part of the
commutator that the brushes touch.
4. Take the machine to a Clarke authorized repair
location if you see any of the following conditions:
1.) Small holes in the surface of the commuta-
tor. See Figure 6 "A".
2.) Uneven color. Look for an even dark
brown color. Clean areas or very dark ar-
eas indicate a problem. See Figure 6 "B".
3.) High mica. The mica insulation must be
lower than the commutator bars. See Fig-
ure 6 "C".
5. Replace all four carbon brushes if any carbon
brush is shorter that 7/16 inch. To replace the
carbon brushes in the motor, follow this proce-
dure:
1.) Remove the screws. Replace the brush
and lead. Install the screw.
2.) Use a hook to pull the spring out of the
way. Install the brush into the slot. Put the
spring into position on the end of the brush.
The lead must not prevent free movement
of the brush in the holder.
3.) Install the covers and screws.
Rectifi er
If the machine trips circuit breakers, blows fuses or
runs at half speed, the rectifi er may be defective.
Take the machine to an authorized repair location to
have a Clarke authorized repair person replace the
rectifi er.
-12- FORM NO. 71280A
SMALL
HOLES
GOOD
A
GOOD
C
Figure 6
Clarke Operator's Manual (EN) - Ultra Speed Burnisher
®
UNEVEN
GOOD
B
HIGH MICA