Campbell Hausfeld CT1001 Operating Instructions Manual - page 7
CT1001
www.chpower.com
7
Troubleshooting Chart
SYMPTOM
CAUSE
SOLUTION
Compressor will
not run
1 No electrical power
1 Plugged in? Check fuse/breaker or motor overload
2 Blown fuse
2 Replace blown fuse
3 Breaker open
3 Reset, determine cause of problem
4 Thermal overload tripped
4 Reset Thermal overload
5 Pressure switch bad
5 Replace
6 Check valve defective
6 Remove and replace check valve *
Motor hums but
cannot run or
runs slowly
1 Poor contacts, line voltage incorrect
1 Check connections, check with voltmeter
2 Shorted or open motor winding
2 Replace motor
3 Defective check valve or unloader
3 Replace or repair *
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 Defective check valve or unloader
2 Replace or repair *
Thermal overload
protector cuts out
repeatedly
1 Low voltage
1 Check with voltmete
2 Clogged air filter
2 Clean filter (See Maintenance section)
3 Lack of proper ventilation/room
temperature too high
3 Move compressor to well ventilated area
4 Check valve malfunction
4 Replace *
Knocks, rattles,
excessive
vibration
1 Leaking, broken, or loose valves or
restricted air passage
1 Replace
2 Defective pressure switch unloader
2 Replace or repair as necessary
3 Defective bearing on eccentric or motor
shaft
3 Replace
4 Cylinder or piston ring is worn or scored 4 Replace or repair as necessary
5 Loose bolts, tank not level
5 Tighten bolts, shim tank to level position
Tank pressure
drops when
compressor shuts
off
1 Loose connections (fittings, tubing, etc ) 1 Check all connections with soap and water solution and
tighten
2 Loose drain valve
2 Tighten
3 Check valve leaking
3 Disassemble check valve assembly, clean or replace *
Air output lower
than normal/
low discharge
pressure
1 Clogged intake port
1 Clean or replace
2 Air leaks in piping (on machine or in
outside system)
2 Replace leaking components or tighten as necessary
3 Broken inlet valves
3 Have authorized service representative repair unit
4 Piston ring broken
4 Replace
5 Cylinder or piston ring is worn or scored 5 Replace
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
Excessive starting
and stopping
(auto start)
1 Excessive condensation in tank
1 Drain more often
2 Air leaks in piping (on machine or in
outside system)
2 Replace leaking components or tighten as necessary
3 Tank check valve leaking
3 Replace or repair as necessary *
Air leaking from
unloader on
pressure switch
Check valve stuck in an open position
Remove and replace check valve *
*
Do not disassemble check valve with air in tank; bleed the tank.