How does a screw compressor work?

A screw compressor can run loaded ('pumping air') or unloaded ('idle'). The inlet/loading valve opens and closes according to air demand. The inlet valve is controlled by a solenoid valve that supplies control air to the inlet/loading valve. Check solenoid valve coil and solenoid valve operation.

How do you remove a compressor rotor?

Use a slide hammer (M8) to remove the dowel pins (K51) located on both sides of the compressor. Loosen the hex bolts connecting inlet casing (B01) and rotor casing (B02) Apply jack bolts to the inlet casing to separate it from the rotor casing. Slide the inlet casing horizontally away from the compressor.

What if I remove a compressor cover?

Know what is inside the compressor. Some compressors have high-pressure springs as part of their design. Unknowingly removing a cover could launch the cover and the spring causing injury to the technician. Be sure you know what is inside the compressor. Conduct a full rebuild.

What should I do if my air compressor is too low?

If the capacity of the air compressor is really too low, check the following: Check differential pressure over oil separator. Replace separator when necessary. Check and replace compressed air filters (if installed). Compressor does not unload. Check if pressure switch is correctly set and working.

How do you clean a compressor shaft seal?

1. Ensure all compressor components are cleaned and ready for re-installation before removing the shaft seal from its package. 2. Once the seal is removed from the package, care must be taken to avoid contamination. 3. Never attempt to wipe the seal faces with anything other than a clean alcohol swab.

How do you remove a compressor retaining ring?

Slide the inlet casing horizontally away from the compressor. Set the inlet casing on the work bench external surface up. Remove the retaining rings (L12) from both the male and female sides. Turn the inlet casing over so that the external surface is facing sown.