How-To Troubleshoot An Electric Compressor

How-To Troubleshoot An Electric Compressor

ELECTRIC COMPRESSOR TROUBLESHOOTING

The following guide has been compiled to assist the consumer in identifying problems that may be encountered with electric compressors.
Please inspect for possible causes and contact an authorized service center when necessary.

SYMPTOMS POSSIBLE CAUSE CORRECTIVE ACTION
Motor Wont Start - No Power to Compressor
- Switch Lever in “Off” Position
- Faulty Start Relay
- Faulty Start Capacitor

- Check Circuit Breaker or Fuse
- Move Switch Lever to On Position
- ♦
- ♦
Compressor Won’t Restart - Check Valve Leaks
- Low Voltage to compressor
- Pressure Switch Hanging Up

- Inspect Check Valve-Contact Service Center
- Connect Unit to Sufficient Voltage Source
- Inspect Pressure Switch-Contact Service Center
Low Air Output - Leak At Fitting(s)


- Broken Valve Flapper
- Debris in Valves
- Faulty Head Gasket
- Faulty Valve Plate Gasket
- Worn Piston Cup

- Inspect Fittings-If Loose or Damaged Contact Service Center


- Connect Unit to Sufficient Voltage Source
- Inspect Pressure Switch-Contact Service Center
- ♦
- ♦
- ♦
Compressor Won’t Shut Off - Leak At Fitting(s)


- Broken Valve Flapper
- Debris in Valves
- Faulty Head Gasket
- Faulty Valve Plate Gasket
- Worn Piston Cup
- Relief Valve Leaking

- Inspect Fittings-If Loose or Damaged Contact Service Center


- Connect Unit to Sufficient Voltage Source
- Inspect Pressure Switch-Contact Service Center
- ♦
- ♦
- ♦
- ♦
  Water in Air Lines or Tools - Tank Not Drained Regularly - Drain Air from Tank(s) through Drain Valves
- Ensure Air Lines are Free of Moisture


  Low Pressure to Tools - Damaged Gauge on Regulator
- Regulator Not Adjusted Properly
- Faulty Regulator 		- Inspect Gauge-Contact Service Center
- Adjust Regulator to Required Pressure
- Inspect Regulator-Contact Service Center


♦ These procedures require special fixtures, tools or assembly techniques available only through Service Centers. Please contact an authorized Service Center for assistance. 

Jul 21, 2021 Master Tool Repair

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