Because compression takes place simultaneously on two sides of the main rotor, the forces acting on the main bearing balance each other out, cancelling the substantial loads found in twin-screw designs. This results in a lighter, more reliable compressor with less bearing wear over its lifetime. Being a semi-hermetic design, the motor and compressor are housed in a single, serviceable shell, which allows for field servicing while protecting the internal components from contamination.
Use only specified synthetic polyolester oil with anti-wear additives. Check the oil level via the separator sight glass; it should be filled to the top. mcquay hsa screw compressor service manual best
Test the load/unload solenoid coils for continuity; check oil paths for debris. Because compression takes place simultaneously on two sides
