Reasons for Shortened Screw Air Compressor Oil Lifespan

The screw air compressor is essential for providing stable power to production equipment. If it fails, production can be significantly impacted. Here’s what to do if your air compressor cannot start, along with tips for extending the lifespan of your compressor oil.

Troubleshooting Air Compressor Startup Issues

1. Check the Power Supply:
   • Ensure the power switch is turned on and the compressor is connected to the power supply.
2. Control Circuit Fuse:
   • Replace a blown fuse immediately and determine the cause to prevent recurrence.
3. Thermal Overload Relay:
   • Identify and correct the overload cause, then reset the thermal overload device.
4. Low Voltage:
   • Consult the power department to check and resolve low input voltage issues.
5. Power Failure:
   • Verify if there is a general power outage affecting the compressor.
6. Loose Wiring:
   • Inspect all wiring terminals and tighten any loose connections.
7. Temperature Sensor Failure:
   • Check the sensor for faults and contact a professional if repair is needed.
8. Transformer Failure:
   • Inspect the transformer’s secondary voltage for any abnormalities.
9. Thermal Overload Relay:
   • Similar to earlier, correct overload causes and reset the device. Proper maintenance ensures the compressor’s normal operation and longevity.

Preparations for Maintenance

Before starting maintenance on a screw compressor unit, follow these procedures:

1. Cut Off Power Supply:
   • Disconnect the main unit’s power and hang a sign on the power switch to indicate maintenance work.
2. Close Stop Valve:
   • Prevent compressed air from flowing back to the repair area by closing the stop valve. Do not rely solely on the one-way valve.
3. Open Manual Vent Valve:
   • Vent the system’s pressure and keep the vent valve open during maintenance.
4. Water-Cooled Machines:
   • Turn off the water supply system and release pressure from the water pipeline.
5. Ensure Cool Compressor:
   • Allow the compressor unit to cool down to avoid burns.
6. Clean Work Area:
   • Wipe off any oil or water marks on the ground to prevent slipping hazards.

Maintenance Safety Tips

1. Automatic Control System:
   • Be aware that the compressor may start automatically even if it appears stopped.
2. Proper Maintenance:
   • Poor maintenance can affect the unit’s operation and the operator’s safety.
3. Avoid Removing Parts Under Pressure:
   • Do not remove nuts, oil plugs, or other parts while the compressor is running or under pressure.
4. Avoid Flammable Solvents:
   • Do not use gasoline or kerosene to clean air filters or other components.

By following these guidelines, you can troubleshoot startup issues effectively and ensure proper maintenance of your screw air compressor, thereby extending its oil lifespan and maintaining efficient operation.

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