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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Compressor will not run
Loss of power or overheating
No electrical power
Blownshop/housefuse
Shop/house breaker open
Thermal overload is actuated
Pressure switch bad
Compressor has reached automatic shutoff
pressure
Check for proper use of extension cord
Check to be sure unit is plugged in
Check fuse/breaker
Replaceshop/houseblownfuse
Resetshop/housebreaker,determiningwhy
problem happened
Seemanualpage13
Take compressor to service center
Release air from tank until compressor re-
starts automatically
Motor hums but cannot run or runs slowly
Low voltage
Wrong gauge wire or length of extension cord
Shorted or open motor winding
Defectivecheckvalveorunloader
Call an electrician
Check for proper gauge wire and cord length
Take compressor to service center
Take compressor to service center
Fusesblow/circuitbreakertripsrepeatedly Incorrect size fuse, circuit overload
Wrong gauge wire or length of extension cord
Defectivecheckvalveorunderloader
Check for proper fuse, use time-delay fuse,
disconnect other electrical appliances from
circuit or operate compressor on its own
branch circuit
Check for proper gauge wire and cord length
Take compressor to service center
Thermal overload protector cuts out
repeatedly
Low voltage
Lack of proper ventilation/room temperature
too high
Wrong gauge wire or length of extension cord
Call an electrician
Move compressor to well-ventilated area
Check for proper gauge wire and cord length
Air receiver pressure drops when compressor
shuts off
Loose connections
(ttings,tubing,etc.)
Loose drain valve
Check valve leaking
Check all connections with soap and water
solution and tighten
Tighten drain valve
Take compressor to service center
Excessive moisture in discharge air
Excessive water in air tank
High humidity
Draintank
Movetoareaoflesshumidity;useairlinelter
Compressor runs continuously
Defectivepressureswitch
Excessive air usage
Take compressor to service center
Decrease air usage; compressor not large
enough for tool’s requirement
Compressor vibrates Loose mounting bolts
Tighten mounting bolts
Air output lower than normal
Brokeninletvalves
Connections leaking
Take compressor to service center
Tighten connections