Troubleshooting - AEG AC3050B Original Instructions Manual

PROBLEM
Compressor will not run
Motor hums but cannot run or runs
slowly
Current limiting protector cuts out
repeatedly
Air tank pressure drops when
compressor shuts off
Excessive moisture in discharge air
Compressor runs continuously
Air output lower than normal

TROUBLESHOOTING

POSSIBLE CAUSE
Loss of power or overheating
No electrical power
Blown shop/house fuse
Shop/house breaker open
Current limiting protector open
Bad pressure switch
Tank is full of air
Low voltage
Wrong gauge wire or length of extension
cord
Shorted or open motor winding
Defective check valve or unloader
Low voltage
Lack of proper ventilation/room
temperature too high
Wrong gauge wire or length of extension
cord
Loose connections (fittings, tubing, etc.)
Loose drain valve
Check valve leaking
Excessive water in air tank
High humidity
Defective pressure switch
Excessive air usage
Piston rings are worn
Broken inlet valves
Connections leaking
13
SOLUTION
Check for proper use of extension cord
Check to be sure unit is plugged in
Check fuse/breaker
Replace shop/house blown fuse
Reset shop/house breaker, determining why problem
happened
Reset motor overload to restart after motor has cooled.
Replace pressure switch
Compressor will turn on when tank pressure drops to cut-
in pressure
Check with voltmeter
Check for proper gauge wire and cord length
Take compressor to service centre
Take compressor to service centre
Check with voltmeter
Move compressor to well-ventilated area
Check for proper gauge wire and cord length
Check all connections with soap and water solution and
tighten
Tighten drain valve
Take compressor to service centre
DANGER
Do not disassemble check valve, tank drain valve or
pressure relief valve with air in tank — bleed tank.
Drain tank
Move to area of less humidity; use air line filter
Take compressor to service centre
Take compressor to service centre
Decrease air usage; compressor not large enough for
tool's requirement
Replace piston rings; air inlet filter is blocked, call customer
service for assistance
Take compressor to service centre
Tighten connections
13