: Evacuate the compressor to at least 5 to 6 mm Hg (Torr) before slowly bleeding refrigerant back into the system to equalise pressures. Troubleshooting Common HSA Issues McQuay HSA Screw Compressor Training | PDF | Valve - Scribd
: For advanced repair, training presentations like the HSS 3100 Series Training detail internal components, such as the capacity regulation system, slide pistons, and oilways. mcquay hsa screw compressor service manual best
McQuay is now known as . They have the Official Service Manuals behind a paywall/free registration wall. : Evacuate the compressor to at least 5