Campbell Hausfeld HL5500 Series, HS5500 operating instructions Troubleshooting Chart

Oil-Lubricated Compressors

Troubleshooting Chart

Symptom	Possible Cause(s)		Corrective Action
Compressor will not run	1. Switch in OFF position		1.	Make sure compressor is plugged in and switch is ON.
	2.	No electrical power at wall outlet	2.	Check circuit breaker or fuse at electrical panel.
	3.	Compressor has reached automatic	3.	Release air from tank until compressor restarts
		shutoff pressure		automatically.
	4.	Motor overloaded	4.	Allow compressor to cool for approximately 30
				minutes. To reset, turn pressure switch to OFF, then
				AUTO. Make sure compressor is run in a clean, well-
				ventilated area.
	5.	Pressure switch bad	5.	Replace pressure switch.
Motor hums but cannot	1. Defective check valve		1.	Replace.
run or runs slowly	2. Defective unloader valve (on pressure		2.	Replace.
		switch)	3.	Check voltage at wall outlet with voltmeter.
	3.	Low voltage
	4.	Loose electrical connections	4.	Check all electrical connections.
	5.	Wrong gauge wire or length of	5.	Check extension cord chart for proper extension cord
		extension cord		usage.
	6.	Defective motor capacitor	6.	Replace capacitor.
	7.	Shorted or open motor winding	7.	Replace motor assembly.
					Do not disassemble check valve
					with air in tank; bleed tank

Flow blows/circuit breaker trips repeatedly

1.	Incorrect fuse size, 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.	Wrong gauge wire or length of	2.	Check extension cord chart for proper extension cord
	extension cord		usage.
3.	Defective check valve	3.	Replace.
4.	Defective unloader valve (on pressure	4.	Replace.
	switch)	5.	Replace capacitor.
5.	Defective motor capacitor
6.	Motor shorted or seized	6.	Replace motor assembly.
				Do not disassemble check valve
				with air in tank; bleed tank

Thermal overload protector cuts out repeatedly

1.	Low voltage	1.	Check voltage at wall outlet with voltmeter.
2.	Wrong gauge wire or length of	2.	Check extension cord chart for proper extension cord
	extension cord		usage.
3.	Clogged intake filter	3.	Clean or replace filter.
4.	Lack of proper ventilation/room	4.	Move compressor to well-ventilated area.
	temperature too high	5.	Replace.
5.	Defective check valve
6.	Defective unloader valve (on pressure	6.	Replace.
	switch)			Do not disassemble check valve
				with air in tank; bleed tank

Knocks, rattles, and/or	1.	Loose mounting bolts	1. Tighten bolts.
excessive vibration	2.	Tank not level	2. Use sturdy wedge/object to bring tank to level position.
Tank pressure drops	1.	Loose drain valve	1.	Tighten.
when compressor shuts	2.	Loose connections at fittings, tubing,	2.	Check all connections with soap and water solution.
off		etc.		If a leak is detected, (1) tighten or (2) remove fitting
				and apply pipe tape to threads and reassemble.
	3.	Tank leaks	3.	Check tank for leaks with soap and water solution. If
				leak is detected, tank must be replaced with genuine
				replacement part.
					Do not disassemble check valve
					with air in tank; bleed tank

Compressor runs continuously and air output is lower than normal/low discharge pressure

1.	Excessive air usage, compressor too	1.	Decrease usage or purchase unit with higher air
	small		delivery (SCFM).
2.	Clogged intake filter	2.	Clean or replace.
3.	Loose connections at fittings, tubing,	3.	Check all connections with soap and water solution.
	etc.		If a leak is detected, (1) tighten or (2) remove fitting
			and apply pipe tape to threads and reassemble.
4.	Tank leaks	4.	Check tank for leaks with soap and water solution. If
			leak is detected, tank must be replaced with genuine
			replacement part.

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