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Item 62811
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 has 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.
Extension cord too long
or wire size too small.
Eliminate use of extension cord. If an extension
cord is needed, use shorter/heavier gauge cord.
See
Extension Cords
in
GROUNDING
section.
Performance
decreases
over time.
1. Chisel dull or damaged.
2. Internal lubrication cold.
3. Carbon brushes worn
or damaged.
1. Keep chisels sharp. Replace as needed.
2. Allow tool to operate with no load
for 2 minutes before use.
3. Have qualified technician replace brushes.
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. Chisel 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 cutting chisels 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.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
