Chicago Electric 91223 Owner's Manual download pdf (Page 16)

Page 16 For technical questions, please call 1-888-866-5797. Item 91223

Maintenance and Servicing

Procedures not specifically explained in this manual must

be performed only by a qualified technician.

TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:

Turn the Power Switch of the tool off and unplug the tool from its electrical outlet

before performing any inspection, maintenance, or cleaning procedures.

TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment.

If abnormal noise or vibration occurs, have the problem corrected before further use.

Cleaning, Maintenance, and Lubrication

1. BEFORE EACH USE, inspect the general condition

of the tool. Check for loose screws, misalignment

or binding of moving parts, cracked or broken

parts, damaged electrical wiring, and any other

condition that may affect its safe operation.

2. AFTER USE, wipe external surfaces

of the tool with clean cloth.

3. Periodically blow dust and grit out of the motor

vents using dry compressed air. Wear ANSI-

approved safety goggles and NIOSH-approved

breathing protection while doing this.

4. CARBON BRUSH MAINTENANCE.

The Carbon Brushes may require maintenance when

the motor performance of the tool decreases or

stops working completely. To maintain the brushes:

a. Remove the Brush Cap (23) on each

side of the motor Housing (18).

Housing

(18)

Brush

Cap (23)

Carbon

Brush (22)

Figure 2 –

Replacing the Carbon Brushes

b. Remove the Carbon Brushes (22) from the

Housing. Keep track of which orientation

the old Carbon Brushes were in to prevent

needless wear if they will be reinstalled.

c. If either Carbon Brush is worn down by more

than 1/2, replace both Carbon Brushes.

d. To clean old Carbon Brushes before reusing

them, rub the contact areas with a pencil eraser.

e. Reinsert the old Carbon Brushes in the

same orientation to reduce wear.

f. When installing the Carbon Brushes, make

sure the carbon portions of the Carbon

Brushes contact the motor armature, and that

the springs face away from the motor. Also,

make sure the springs operate freely.

g. Replace the Brush Caps. Do not overtighten.

Note: New Carbon Brushes tend to spark when first

used until they wear and conform to the motor’s armature.

5. WARNING! If the supply cord of this

power tool is damaged, it must be replaced

only by a qualified service technician.

Accessory Storage and Handling

1. Handle accessories carefully to prevent

dropping or bumping. Do not use wheels

that have been dropped or bumped.

2. Store accessories in shelves, racks, boxes, or

drawers. Storage area must be kept dry, and above

freezing. Any grinding or cut-off wheels exposed to

humidity or freezing temperatures must not be used.

SAFETY OPERATION MAINTENANCESETUP

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Chicago Electric 91223 Owner's Manual Page 16

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