Routine Maintenance - Clarke American Sanders Super E Edger Manual Del Operador

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ROUTINE MAINTENANCE

Carbon Brushes
Inspect all four brushes every 6 months or 250 hours. Access to the
brushes is gained through the front and back motor vent plugs and under
both covers. Press tab on spring clip assembly in, rotate, then remove
(fi gure 7). Use needlenose pliers to disconnect the shunt wire. If any
brush has worn to 3/8" in length or shorter, replace the entire set.
CAUTION: Use only motor brush part no. 40818A
or 40055A with shunt wire or motor failure will occur.
When replacing the brushes, make sure that the brush seats against the
commutator, the tab on the spring clip assembly is fully seated in pocket,
and the brush is free to travel. When returning the switch covers, keep all
wires clear of the commutator and any pinch sites.
Pad
Figure 7
In time the elastomer on the pad may wear or become damaged. To re-
place, remove pad by placing screwdriver in slot of shaft, grasp pad and
rotate shaft counterclockwise. Remove existing elastomer and clean hub
throughly to remove old adhesive. Roughen surface of new elastomer to
provide good bond sights. Apply a good rubber cement to both surfaces
and allow to tack. 3M# 1300 rubber and gasket cement is a suitable
choice. Apply elastomer to hub and knead throughly. Apply pressure to
elastomer and allow to stand over night. Apply a medium strength thread
locker to the external threaded end of the shaft. Install belt in grooves
on hub and screw down on shaft. Install abrasive retainer on to shaft.
Locate a fl at surface and tape 80 grit abrasive to surface. Using machine
"dress in" by sanding the elastomer on the pad. Continue sanding until
the entire surface of the elastomer shows signs of sanding. As in opera-
tion of the machine, take precautions performing this procedure.
Pad Driver
Periodically inspect belt grooves on pad driver for an accumulation of
paint or varnish especially after jobs where several layers of paint or
varnish have been removed. Particles of paint or varnish can deposit in
the grooves, creating vibration and damaging the drive belt. Use a plastic
putty knife or similar object to remove the deposits.
Dust Bag
Periodically the dust bag should be turned inside out, shaken vigorously
and machine washed in cold water to prevent pore blockage and loss of
dust control.
Bearings
To insure reliable performance, armature and pad driver bearings should
be inspected for wear or damage after 1500 hours. If used heavily the
bearings should be replaced seasonally.
-10- FORM NO. 70102B American Sanders Operator's Manual (EN) - Super E
®
Clarke