Troubleshooting Chart
Symptom
Possible Cause(s)
Compressor will not run
1. No power or switch in OFF position
2. Blown fuse (usually indicated by no
3. Motor overheated
4. Tank pressure at maximum
5. Breaker open
6. Pressure switch bad
Fuses blow/circuit
1. Incorrect size fuse, circuit overloaded
breaker trips repeatedly
2. Defective check valve
Never use an extension
cord with this product
Thermal overload
1. Low voltage
protector cuts out
2. Lack of proper ventilation/room
repeatedly
3. Check valve malfunction
4. Compressor valves failed
Knocks, rattles,
1. Loose bolts, tank not level
excessive vibration
2. Defective bearing on eccentric or
3. Cylinder or piston ring is worn or
Tank pressure drops
1. Loose drain cock
when compressor shuts
2. Check valve leaking
off
3. Loose connections at pressure switch
light in power switch)
temperature too high
motor shaft
scored
or regulator
Corrective Action
1. Make sure compressor is plugged in and switch is ON
2. Disconnect compressor from power source then
remove pump shroud. Replace fuse (Part. No.
FP200352AV)
3. Allow compressor to cool for approximately 30
minutes so thermal overload switch will reset. If unit
still does not start, empty air from tank and refer to
actions 1 and 2.
4. Release air from tank
5. Reset, determine cause of problem
6. Replace pump assembly
1. Check for proper fuse (5 amp), use time-delay fuse.
Disconnect other electrical appliances from circuit or
operate compressor on its own branch circuit
2. Replace check valve assembly
1. Eliminate extension cord, check with voltmeter
2. Move compressor to well ventilated area
3. Replace check valve assembly
4. Replace pump assembly
1. Tighten bolts, shim tank to level position
2. Replace pump assembly
3. Replace pump assembly
1. Tighten
2. Replace pump assembly
3. Check all connections with soap and water solution
and tighten
5
FP2003
Do not disassemble check valve
with air in tank; bleed tank
Do not disassemble check valve
with air in tank; bleed tank
Do not disassemble check valve
with air in tank; bleed tank
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