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Item 69947
SAFET
y
Op
ERA
TION
M
AINTENAN
c
E
SETU
p
Troubleshooting
problem
possible causes
Likely Solutions
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset
breaker tripped
(if equipped).
4. Internal damage or wear.
(Carbon brushes or
switch, for example.)
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered,
turn off tool and check circuit breaker.
If breaker is tripped, make sure circuit is right
capacity for tool and circuit has no other loads.
3. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates
slowly.
1. Forcing tool to
work too fast.
2. Extension cord too long
or cord diameter
too small.
1. Allow tool to work at its own rate.
2. Eliminate use of extension cord.
If an extension cord is needed, use one with
the proper diameter for its length and load.
See
Extension Cords
in
Grounding
section on page 6.
Performance
decreases
over time.
1. Carbon brushes
worn or damaged.
2. Bit dull or damaged.
1. Have qualified technician replace brushes.
2. Keep bits sharp. Replace as needed.
Excessive noise
or rattling.
Internal damage or wear.
(Carbon brushes or
bearings, for example.)
Have technician service tool.
Overheating.
1. Forcing tool to
work too fast.
2. Bit dull or damaged.
3. Blocked motor housing
vents.
4. Motor being strained by
long or small diameter
extension cord.
1. Allow tool to work at its own rate.
2. Keep bits sharp. Replace as needed.
3. Wear ANSI-approved safety goggles and
NIOSH-approved dust mask/respirator while
blowing dust out of motor using compressed air.
4. Eliminate use of extension cord.
If an extension cord is needed, use one with
the proper diameter for its length and load.
See
Extension Cords
in
Grounding
section on page 6.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
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