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NITTO is a registered trademark owned by Nitto Kohki Co., Ltd
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
Compressor will not run
Batteries are not charged
Pressure switch bad
Tank is full of air
Internal overload switch is tripped
Recharge both battery packs.
Take compressor to service centre.
Compressor will turn on when tank pressure
drops to cut-in pressure.
Turn off compressor and allow unit to cool;
remove and reinstall battery packs.
Motor hums but cannot run or runs slowly
Shorted or open motor winding
Defective check valve or unloader
Take compressor to service centre.
Take compressor to service centre.
Internal overload switch trips repeatedly
Lack of proper ventilation/room temperature
too high
Electrical overload
Move compressor to well ventilated area.
Turn off unit and allow to cool; remove and
reinstall battery packs.
Air tank pressure drops when compressor
shuts off
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Loose drain valve / open drain valve
Check valve leaking
Check all connections with soap and water
solution and tighten.
Tighten drain valve / close drain valve.
Take compressor to service centre.
DANGER
Do not disassemble check valve, tank
drain valves or safety relief valve with
air in tank — bleed tank.
Excessive moisture in discharge air
Excessive water in air tank
High humidity
Drain tank.
Move to area of less humidity; use air line
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Compressor runs continuously
Defective pressure switch
Excessive air usage
Piston rings are worn
Take compressor to service centre.
Decrease air usage; compressor not large
enough for tool’s requirement.
Replace piston rings; Call customer service
for assistance.
Air output lower than normal
Broken inlet valves
Connections leaking
Take compressor to service centre
Tighten connections.
Summary of Contents for 6230329
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