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problem
Motor does not rotate
switch on power
supply.
Abnormal noise from
motor; does not rotate
or rotates slowly.
Partial short circuit
Main voltage too low
Gearbox becomes too
hot.
Sparking
for technical questions, please call 1-800-444-3353.
SKU 41983
TROublESHOOTing
possible causes
1.
Disrupted power supply.
2.
Poor contact at the switch.
3.
Armature or field coil burnt.
4.
Breakage of the Stator coil.
5.
Carbon Brushes worn out.
Overload of motor caused by
excessive drilling depth or pressure.
Partial short circuit or open circuit at
Armature.
Main power voltage too low.
1.
Overload, dull bit.
2.
Damp coils.
3.
Incorrect fitting.
4.
Decrease in voltage.
1.
Short circuit or break at Armature.
2.
Surface of Armature not smooth
and clean.
wARRAnTY
probable Solutions
1.
Check power supply.
2.
Repair switch.
3.
Change coil.
4.
Replace Stator Coil.
5.
Replace Carbon Brushes.
Reduce drilling depth or pressure.
Decrease force.
Repair or change Armature.
Adjust main power voltage.
1.
Reduce load, sharpen bit.
2.
Dry coils.
3.
Repair or change armature.
4.
Adjust voltage.
1.
Repair Armature.
2.
Inspect and clean Armature.
Page 13
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