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Maintenance and Servicing
Instructions
Procedures not specifically explained
in this manual must be performed
only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM
ACCIDENTAL OPERATION:
Make sure that the Switch is in the off-position
and remove its Battery Pack before
performing any procedure in this section.
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:
• leaking, swollen, or cracked battery pack,
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. AFTER USE, empty Dust Bag and wipe
external surfaces of the tool with clean cloth.
3. Periodically, wear ANSI-Approved safety goggles
and NIOSH-approved breathing protection and blow
dust out of the motor vents using dry compressed air.
4. Disconnect battery pack and store battery pack,
charger, and tool in dry, indoor area out of
reach of children and away from metal objects
(i.e., paperclips, coins) to prevent shorting.
5. Li-Ion BATTERY MUST BE RECYCLED
OR DISPOSED OF PROPERLY. Do not
short, incinerate or open battery.
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start.
1. Battery Pack not properly
connected.
2. Battery Pack not properly
charged.
3. Battery Pack burnt-out.
4. Internal damage or wear.
( Switch, for example.)
1. Remove Battery Pack, make sure there are no
obstructions, reinsert the Battery Pack according
to its shape (it should only fit one way), and press
firmly until the Battery Pack locks in place.
2. Make sure Charger is connected and
operating properly. Give enough time for
Battery Pack to recharge properly.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
4. Have technician service tool.
Tool operates slowly. 1. Excess pressure applied
to workpiece.
2. Battery Pack power low.
3. Battery Pack burnt-out.
1. Decrease pressure, allow tool to do the work.
2. Recharge Battery Pack.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
Excessive noise
or rattling.
Internal damage or wear.
( Bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Blocked motor housing vents.
1. Allow tool to work at its own rate.
2. Wear ANSI-approved safety goggles and NIOSH-
approved dust mask/respirator while blowing
dust out of motor using compressed air.
Tool does not
grind, sand or
brush effectively.
Accessory damaged, worn or
wrong type for the material.
Check condition and type of disc accessory. Use
only proper type of disc accessory in good condition.
Follow all safety precautions whenever diagnosing or servicing
the tool. Disconnect power supply before service.
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