PROBLEM |
CAUSE |
REMEDY |
Compressor trips due to over temperature |
Compressor operating above rated pressure. |
Set pressure to correct rating for machine. |
Package pre–filter blocked. |
Clean / replace package pre–filter. |
|
Cooler blocked. |
Clean cooler. |
|
Missing or incorrectly fitted enclosure panels |
Ensure that all enclosure panels are correctly fitted |
|
Low coolant level. |
Top up coolant and check for leaks. |
|
High ambient temperature. |
Re–site compressor. |
|
Restricted cooling air flow. |
Ensure correct air flow to compressor. |
|
Excessive coolant consumption |
Separator cartridge leak. |
Fit new Separator cartridge. |
Blocked separator cartridge drain. |
† Remove fittings and clean. |
|
Compressor operating below rated pressure. |
Set pressure to correct rating for machine. |
|
Coolant system leak. |
† Fix leaks. |
|
Excessive noise level |
Air system leaks. |
† Fix leaks. |
Airend defective. |
† Change Airend. |
|
Drive belt slipping. |
Replace belt and tensioner. |
|
Motor defective. |
† Replace motor. |
|
Loose components. |
† Retighten loose items. |
|
Shaft seal leaking |
Defective shaft seal. |
† Fit Airend shaft seal kit. |
Pressure relief valve opens |
Defective switch or incorrect pressure switch setting. |
Replace or set pressure to correct rating for machine. |
Minimum pressure valve malfunction. |
† Fit Minimum pressure valve service kit. |
|
Load solenoid valve defective. |
† Fit load solenoid service kit. |
|
Blowdown valve defective. |
† Fit blowdown solenoid service kit. |
|
Inlet valve malfunction. |
† Fit inlet valve service kit. |
|
Black residue on belt guard/cooler box |
Drive belt slipping. |
Replace belt and tensioner. |
Pulleys misaligned. |
Re–align pulleys. |
|
Worn pulleys. |
† Replace pulleys and belt. |
|
Gas strut failed. |
Replace belt and tensioner. |
|
DRYER OPTION |
||
High Dew Point (Indicator Red) |
Dryer compressor or fan failed. |
Check electrical supply and repair as required. |
Low refrigerant charge. |
Check for leaks. |
|
High pressure switch tripped. |
Check condenser coil for debris. Check fan operation. Clean / repair as required. Reset manual switch. |
|
Low Dew Point (Indicator Blue) OR Compressor runs unloaded with no system pressure |
HGBV out of adjustment / defective. |
Adjust valve or replace as required.
Never adjust thermal expansion valve. It has been factory set |
Water Down stream of dryer (Indicator OK) |
Restricted / defective drain valve. |
Clean / replace drain valve. Clean / replace condensate check valves. |
More Troubleshooting
Posted by Ed Powell on