Speedaire 48UY04 Instrucciones De Funcionamiento Y Manual De Piezas página 15

TROUBLESHOOTING GUIDE (CONTINUED)
SYMPTOM
Motor hums and runs slowly or
not at all (Continued)
Reset mechanism cuts out
repeatedly or circuit breaker trips
repeatedly
Tank does not hold pressure
when compressor is off and the
shut off valve is closed
Pressure switch continuously
blows air out the unloader valve
Excessive vibration
Pressure switch does not
release air when the unit shuts
off
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POSSIBLE CAUSE(S)
7. Defective unloader valve on pressure
switch
8. Defective motor capacitor(s)
9. Defective motor
1. Lack of proper
ventilation / room temperature too high
2. Too many devices on same circuit
3. Restricted air intake
4. Loose electrical connection
5. Pressure switch shut-off pressure set
too high
6. Malfunctioning check valve
7. Defective unloader valve on pressure
switch
8. Defective motor capacitor(s)
9. Malfunctioning motor
1. Air leaks (fittings, tubing on compressor,
or plumbing outside system)
2. Worn check valve
3. Check tank for cracks or pin holes
Malfunctioning check valve
1. Loose fasteners on pump or motor
2. Belt needs replaced
3. Belt alignment
Malfunctioning unloader valve on pressure
switch
13
CORRECTIVE ACTION
7. Replace unloader valve.
8. Replace capacitor(s).
9. Replace motor.
1. Move compressor to well-ventilated area.
2. Limit the circuit to the use of only the air compressor.
3. Clean or replace filter element.
4. Check all electrical connections.
5. Replace pressure switch.
6. Replace check valve.
Risk of Explosion. Do not
disassemble check valve
with air pressure in tank.
7. Replace unloader valve.
8.Replace capacitor(s).
9. Replace motor.
1. Check all connections with soap and water solution.
Tighten; or remove and apply sealant to threads, then
reassemble.
2. Replace check valve.
Risk of Explosion. Do not
disassemble check valve
with air pressure in tank.
3. Replace tank. Never repair a damaged tank.
Replace the check valve if the unloader valve on the
pressure switch bleeds off constantly when unit shuts off.
Risk of Explosion. Do not
disassemble check valve
with air pressure in tank.
1. Tighten fasteners.
2. Replace with correct size.
3. Align flywheel and pulley.
Replace the unloader valve if it does not release the
pressure for a short period of time when the unit shuts off.
Risk of Explosion. Do not
disassemble unloader
valve with air pressure in tank.