Inspection, Maintenance, And Cleaning - Chicago Electric 91938 Operating Instructions Manual

6. Once the cut is completed, turn off the Saw by releasing the Trigger Lock/Switch
(103) and unplug the unit. Do not attempt to remove the workpiece until the Cut-
Off Wheel (56) has stopped moving.
7. Lock down the Saw (see Locking Down the Saw on page 12).

INSPECTION, MAINTENANCE, AND CLEANING

WARNING! Make sure the Power Switch (103) of the Saw is in its "OFF"
1.
position and that the tool is unplugged from its electrical outlet before performing
any inspection, maintenance, or cleaning procedures.
BEFORE EACH USE, inspect the general condition of the Saw. Check for loose
2.
screws, misalignment or binding of moving parts, cracked or broken parts, dam-
aged electrical wiring, and any other condition that may affect its safe operation.
If abnormal noise or vibration occurs, have the problem corrected before further
use. Do not use damaged equipment.
3. Daily, while wearing gloves, use a soft brush, cloth, or vacuum, to remove all dust
and debris from the Saw. Then, use a high quality, lightweight machine oil to
lubricate all moving parts, except the Cut-Off Wheel (56).
Note: If the motor performance decreases or stops, it may be necessary to
replace the Carbon Brushes (67). Refer to FIGURES 8 and 9.
4. The Carbon Brushes (67) are located on each side of the Motor Housing (see
FIGURE 8). To replace the Carbon Brushes (67), use a standard screwdriver (not
included) to open the two Carbon Brush Covers (68). Remove the Carbon Brush-
es (67). If they are less than half their original size, replace them. If replacing,
you must replace both at the same time. If they are larger than half their original
size, they can be cleaned by rubbing them with a pencil eraser. When returning
them to their compartment, make sure the carbon portions of the Carbon Brush-
es (67) contact the Motor Armature (85), and the springs face away from the
Motor. Also, make sure the springs operate freely. After cleaning or replacement,
replace the Carbon Brush Covers (68) and tighten securely. DO NOT OVER-
TIGHTEN. Note: New Carbon Brushes (67) tend to arc or spark when first
used until they wear and conform to the Motor Armature (85).
FIGURE 8
Carbon Brush
Cover (68)
For technical questions, please call 1-800-444-3353.
SKU 91938
FIGURE 9
Carbon Brush
Cover (68)
Page 14