Overheating is one of the most common air compressor faults and a leading cause of shortened component life. The machine usually trips a high-temperature alarm before damage. Here are the causes and fixes.
Common Causes
- Blocked or dirty oil and air coolers.
- Low oil level or degraded oil.
- High ambient temperature or poor ventilation.
- A failed cooling fan or thermostat.
How to Fix It
- Clean cooler fins with compressed air and soft brushes.
- Top up or replace the oil.
- Improve room ventilation and cooling air flow.
- Check fan motor, belt and temperature sensors.
Prevention
- Keep the machine and room clean.
- Follow the service schedule and log temperatures.
What temperature is too hot for a screw compressor?
Discharge air above about 100–110 °C usually triggers an alarm. The exact limit depends on the model.
Talk to an Engineer
Contact Panrui with your flow, pressure and air quality requirements to get a recommendation and factory quote for your project.