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

 

a u t o m a t i c a l l y .

 

 

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

. Repair or replace.

 

run or runs slowly

2 . Defective unloader valve (on pressure

2

. Repair or replace.

 

 

 

s w i t c h )

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

 

u s a g e .

 

 

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

 

u s a g e .

3

. Defective check valve

3

. Repair or replace.

4

. Defective unloader valve (on pressure

4

. Repair or replace.

 

s w i t c h )

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 r e p e a t e d l y

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

 

u s a g e .

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

. Repair or replace.

5

. Defective check valve

6

. Defective unloader valve (on pressure

6

. Repair or replace.

 

s w i t c h )

7

. Replace valve assembly.

7

. Compressor valves failed

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.

 

3

. Cylinder or piston is worn/scored

3

. Replace or repair as necessary.

 

 

 

 

 

Tank pressure drops

1

. Loose drain valve

1

. T i g h t e n .

when compressor shuts

2

. Check valve leaking

2

. Remove check valve. Clean or replace.

o f f

3

. Loose connections at fittings, tubing,

3

. Check all connections with soap and water solution.

 

 

e t c .

 

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.

Do not disassemble check valve with air in tank; bleed tank

Compressor runs continuously and air output is lower than normal/low discharge p r e s s u r e

1 . Excessive air usage, compressor too s m a l l

2. Clogged intake filter

3 . Loose connections at fittings, tubing, e t c .

1 . Decrease usage or purchase unit with higher air delivery (SCFM).

2 . Clean or replace.

3 . Check all connections with soap and water solution. If a leak is detected, (1) tighten or (2) remove fitting and apply pipe tape to threads and reassemble.

w w w . c h p o w e r . c o m

6

Page 6
Image 6
Campbell Hausfeld IN615601AV Troubleshooting Chart, Do not disassemble check valve with air in tank bleed tank