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 does a screw compressor differ from a rotary lobe blower?

ROTOR In its construction the screw compressor closely resembles the well-known rotary lobe blower. It differs, however, in its peculiar rotor profile and its very large helix angle (the wrap angle of a mail rotor is 300 degrees in most cases). The rotor profile is the unsymmetrical type as shown in Fig-1.2 having both convex and concave faces.

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.

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.

How many rotors does a screw compressor have?

The mechanism of the screw compressor consist of two screwed teeth rotors which are i8ntermeshed in parallel within the casing. The rotor which has five lobes is called “male rotor” and the other which has six lobes is called “female rotor”.

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.