Applicable Systems
GA Series Compressed Air System
Symptoms
The Atlas Copco controller displays E08, indicating the cooler is not providing adequate heat dissipation. The compressor operating temperature is too high.
Possible Causes
- Cooler fins blocked with dust and debris reducing airflow
- Cooling fan motor failed or running at reduced speed
- Ambient temperature too high for rated cooler capacity
- Cooler internally fouled with oil sludge or scale
Troubleshooting Steps
- Step 1: Clean cooler fins externally using compressed air or pressure washer
Fins should be clean and straight; be careful not to bend delicate fins - Step 2: Check cooling fan motor operation and speed
Fan must run at rated speed; check for bearing wear or electrical faults - Step 3: Verify ambient temperature at compressor intake
Ambient should be below 40C for standard units; improve room ventilation if too high - Step 4: Inspect cooler internally for oil sludge buildup
If internal fouling is suspected, chemical cleaning may be required
How to Reset
To reset: 1) Clean the cooler. 2) Verify fan operation. 3) Allow the compressor to cool. 4) Restart. Caution: Operating at high temperature accelerates oil degradation and reduces airend life significantly.
Frequently Asked Questions
- Q: How often should the Atlas Copco cooler be cleaned?
Under normal conditions, clean the cooler every 3-6 months. In dusty environments, more frequent cleaning may be required.
- Q: What temperature triggers E08?
E08 triggers when the compressor operating temperature exceeds the rated maximum, typically around 110C for the airend discharge temperature. Check the specific model manual.
Source: Atlas Copco GA Series Compressor Fault Code Analysis, Atlas Copco Service Documentation
Category: Air Dryer