Page 8
Clarke
®
American Sanders
Super 7R Operator's Manual
Bearings
To insure reliable performance, have armature and
pad driver bearings inspected for wear or damage
after every 1500 hours. If used heavily, have the
bearings replaced seasonally.
Lubrication
The machine comes fully lubricated. The gears in
the gear box have enough lubrication for approxi-
mately six months of normal operation. Have the
lubricant changed at least every 6 months or more
frequently under heavy use.
OPERATING INSTRUCTIONS cont.
DANGER:
Failure to disconnect the supply cable
from machine whenever servicing,
replacing abrasive, or emptying the
dust bag could result in electrocution
or severe injury. Never leave machine
unattended while the supply cable is
connected.
DANGER:
Never leave dust bag unattended with
sanding dust in it. Sanding dust can
spontaneously ignite and cause a fire
or explosion. Empty dust bag into a
metal container, clear of any combus
tibles. Do not empty content into a fire.
Do not overfill dust bag.
ADJUSTMENT PROCEDURES
Leveling
To level machine: Grasp caster adjusting screw "A" with an
appropriate tool (pliers ect.). Using a similar tool, loosen
locknut "B" with a counter clockwise motion. (Figure 5).
Condition - Pad creates ridges on both edges or a "hop" is
experienced: Rotate both adjusting screws equal amounts
clockwise. Tighten locknuts and test on a piece of ply-
wood. Repeat procedure until condition is corrected. We
recommend you not exceed 1/8" rotation for each attempt.
Condition - Pad creates a ridge on the tip of the pad:
Rotate both adjusting screws counter clockwise, tighten
locknuts and test. Repeat procedure until condition is
corrected. Use only 1/8 rotation for each attempt.
Condition - Pad creates a ridge on only one side of the pad:
Either rotate the adjusting screw of the side effected
clockwise or rotate theadjusting screw opposite counter-
clockwise, depending on whether the ridge terminates
beyond the tip of the pad or prior to it. If it is prior to the
tip, adjust the side effected, otherwise adjust the opposite
side.
ROUTINE MAINTENANCE
CAUTION:
Failure to perform maintenance at
recommended intervals may void
warranty.
Carbon Brushes
Have the carbon brushes replaced at least every 500
hours and more frequently under heavy use.
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.
Figure 5
A
B
