Atlas Copco XAS 185: How to Fix High Air Discharge Temperatures
If your Atlas Copco XAS 185 is showing high air discharge temperatures, it’s a sign that something in your cooling or airflow system needs attention. Running too hot can damage internal components, cause premature oil breakdown, and lead to unplanned downtime. Here’s a practical guide to help you diagnose and fix the problem before it leads to costly repairs.
1. Check for insufficient cooling airflow
Restricted airflow around the unit can cause hot discharge air and high operating temperatures.
- Suggested action: Move the compressor away from walls or other barriers. Ensure there’s enough space for proper ventilation on all sides. Check that all doors and panels are properly closed during operation to maintain designed airflow paths.
2. Inspect and clean the oil cooler
A clogged oil cooler can't transfer heat effectively, leading to elevated air temperatures.
- Suggested action: Inspect the cooler fins for dust and debris buildup. Clean using compressed air (blowing from the inside out) or a soft brush. Avoid high-pressure water, as it can damage the fins.
3. Verify oil levels and condition
Low or degraded oil can’t effectively remove heat from the system.
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Suggested action: Check the oil level using the sight glass or dipstick when the compressor is off and level. Top up if necessary using the recommended oil type. Change oil at the recommended intervals to maintain cooling efficiency.
For instance: We offer OEM-equivalent compressor oils that meet Atlas Copco specifications. Just match your model and environment.
4. Check the thermostatic bypass valve
If this valve is stuck open, oil may bypass the cooler entirely, leading to high discharge temperatures.
- Suggested action: Remove and inspect the thermostatic bypass valve. Make sure it opens and closes properly. Clean or replace it if sticking or damage is found.
5. Replace clogged oil or air filters
Blocked filters can restrict flow, reduce oil cooling, and raise discharge air temperatures.
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Suggested action: Replace oil and air filters if they are dirty or overdue for service. Always use OEM-equivalent parts to ensure proper flow and filtration.
For instance: You can browse XAS 185-compatible air and oil filters here. Just verify part numbers before ordering.
6. Check for recirculated hot exhaust air
In some cases, exhaust air can recirculate into the intake area, especially in confined or windy locations.
- Suggested action: Position the unit so exhaust air is directed away from the intake. In hot weather, consider using shade or additional fans to reduce ambient intake temperatures.
7. Inspect fan blades and belt condition
Damaged fan blades or a worn fan belt reduce cooling capacity.
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Suggested action: Inspect fan blades for cracks or missing pieces and replace if needed. Check the belt for cracks, fraying, or looseness, and adjust or replace as necessary.
For instance: If your belt is worn, we offer replacement drive belts for the XAS 185. Confirm the right fit by matching your model and serial number.
Final thoughts
Addressing high air discharge temperatures promptly helps prevent serious damage and keeps your Atlas Copco XAS 185 running reliably. Regular inspections and proactive maintenance are key to avoiding costly downtime and extending compressor life.