Campbell Hausfeld WL6700 Series - Manual (Page 18)

18
Operating Instructions and Parts Manual
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Troubleshooting Guide
SyMPtoM CAuSe SoLutIon
Compressor will not run 1. No electrical power 1. Plugged in? Switch on? Check fuse/breaker
2. Breaker open 2. Reset, determine cause of problem
3. Pressure switch bad 3. Replace
4. Motor over worked 4. Turn off, let cool, turn on.
5. Tank pressure above cut-in 5. Bleed tank pressure down to cut-in.
Fuses blow/circuit breaker
trips repeatedly 1. Incorrect size fuse, circuit overloaded 1. Check for proper fuse, use time-delay fuse.
Disconnect other electrical appliances from circuit
or operate compressor on its own branch circuit
2. Worn check valve 2. Replace
Do not disassemble check valve with
air in tank; bleed tank
Tank pressure drops when
compressor shuts off 1. Loose connections (fittings, tubing,
etc.)
1. Check all connections with soap and water
solution. Tighten; or remove and apply pipe dope
or pipe tape to the threads, then reassemble.
2. Open tank drain 2. Close drain
Air output lower than
normal/low discharge
pressure 1. Air leaks in piping (on machine or in
outside system)
1. Check all connections with soap and water
solution. Tighten; or remove and apply pipe dope
or pipe tape to the threads, then reassemble.
2. Piston ring worn 2. Replace
3. Excessive air usage 3. Decrease air usage; compressor not large enough
for air requirement
4. Open tank drain 4. Close tank drain
Excessive moisture in
discharge air 1. Excessive water in tank 1. Drain tank
2. High humidity 2. Move to area of less humidity; use air line filter
Compressor runs
continuously 1. Defective pressure switch 1. Replace switch
2. Excessive air usage 2. Decrease air usage; compressor not large enough
for air requirement
Motor runs but no air output Belt worn Replace belt