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TROUBLESHOOTING GUIDE
Symptom
Possible Cause(s)
Air supply is not enough
Tool does not
(air pressure not at required
run at a normal
standard)
speed or at a
variable speed
Speed controller/switch
breaks down
Rotor blades break or wear
out
The motor
blocks
Dust gets into the motor
Throttle lever or starting
Automatic start
trigger malfunctions
when
connected to
Air leakage
compressed air
Reduced
Bearing(s) damaged
torque
Corresponding O-Ring(s)
Abnormal
wear out or out of position
vibration (Heat
rising from the
Lack of lubrication
housing)
Note: For any troubles which cannot be resolved, please contact the selling agent, where you
purchased the tool
WARNING: Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect the air supply before servicing.
Corrective Action
Check the air hose to see whether it is blocked
or twisted causing less air supply
Check the air compressor to gain the correct
air pressure required
Replace rotor blades
Disassemble the tool and clean the inner
structure under proper instructions
Check and fix the throttle lever or starting
trigger for accurate operation
Check the air leakage and fix it under proper
instruction
Replace damaged bearing(s)
Replace damaged O-Ring(s) or put it back in
correct position
Oil/lubricate the tool consistently until it gains
the right speed and torque
9
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