| Compressor Will Not Start |
- No power
- Fuse blown in control circuit
- Motor overloads not tripped or nor reset
- Loose incoming or power connection wires
- Low voltage to unit
- Faulty temperature switch
- Temperature switch tripped
- High pressure switch tripped
|
- Check power supply for adequate voltage
- Check fuses
- Make sure all power wires are tight at connections
- Check voltage supply to make sure it is high enough to run the electric system
- Check temperature switch for proper operation
- Check system pressure
|
| Unit starts-them immediately stalls |
- Pressure switch out of adjustment
- Temperature switch activated
- Loose electrical supply wires
- Motor overloads tripped
- Low voltage
- Incorrect compressor rotation
|
- Check compressor power supply for adequate breaker and wire size
- Inspect check valve for proper operation
- Tighten belts
- Check compressor for proper oil level
|
| Low Discharge Pressure |
- Plugged separator
- Plugged oil cooler
- Improper pressure switch setting
- Low incoming power voltage
- Electrical phase imbalance
- Possible airend or motor failure
|
- Tighten compressor belts to recommended specifications
- Check compressor voltage supply
|
| Compressor does not build up to pressure |
- Air leaks in shop
- Inlet valve malfunction
- Compressor belts slipping
- Air demand exceeds compressor output
- Pressure switch set to low
- Solenoid valve malfunction
- Compressor rotors damaged
|
- Find and fix shop air leaks
- Check inlet valve for proper function
- Check air usage requirements on machinery and check for shop air leaks
- Check pressure switch for proper setting
- Check solenoid for proper function
|
| Compressor will not load to compress air |
- Pressure switch set to high
- Inlet valve malfunction
- Faulty solenoid
|
- Check pressure switch for proper setting
- Check inlet valve for proper function
- Check solenoid for proper function
|
| cfm Flow (air flow) seems low |
- Restricted air intake filter
- Inlet valve partially closed
- Air pressure set to high
- Insufficient oil flow
- Solenoid valve malfunction
|
|
| Excessive oil consumption |
- Over filled sump
- Broken oil line
- Plugged oil return line
- Damaged or dirty separator
- Excessive unloaded compressor run time
|
- Check sump for proper oil level
- Check all lines for cracks
- Replace separator
- Add a timer to the system
|
| High temperature shutdown |
- High ambient air temperature around compressor
- Low oil level in compressor
- Plugged oil filter
- Restricted air flow over cooler
- Thermal by pass leaking
- Faulty temperature switch
|
- Lower ambient temperature around compressor
- Check unit for proper oil level
- Replace oil filter
- Clean oil cooler
- Check thermal bypass for proper operation
- Check temperature switch for proper operation.
|
| High amperage draw |
- Restricted air intake filter
- Inlet valve partially closed
- Air pressure set to high
- Insufficient oil flow
- Solenoid valve malfunction
|
- Change separator
- Clean oil cooler
- Check pressure switch
- Check incoming voltage
- Check air end and motor for proper function
|
