QGD-20/25/30& QGD-40/50

Direct Drive Rotary Screw Air Compressor

Parts Manual

This manual contains important safety information and should be made available to all personnel who operate and/or maintain this product. Carefully read this manual before attempting to operate or perform maintenance on this equipment.

Manual No. 65112-1A

May 2009 Edition

Update: August 2010

Alphabetical Index

Airend (50 hp, 100/125#) ................................................................................................ 8-9

Airend(s) (20/25/30 hp) .................................................................................................... 4-5

Airend(s) (40 hp/50 hp, 150#) ......................................................................................... 6-7

Air Filter ...................................................................................................................... 20-21

Air Piping (20/25/30 hp) ............................................................................................. 44-45

Air Piping (40/50 hp) .................................................................................................. 46-47

Cabinet (20/25/30 hp) ................................................................................................ 62-63

Cabinet (40/50 hp) ..................................................................................................... 64-65

Control Piping (20/25/30 hp) ....................................................................................... 28-39

Control Piping (40/50 hp) ........................................................................................... 40-43

Control Schematics ..................................................................................................... 68-75

Cooler (20/25/30 hp) .................................................................................................. 58-59

Cooler (40/50 hp) ....................................................................................................... 60-61

Decals ......................................................................................................................... 66-67

Drive Coupling ........................................................................................................... 10-11

Electrical Control & Starting (gauge control) ............................................................... 22-27

Electrical Control Diagram (full voltage, auto dual) ..................................................... 76-79

Fluid Piping (20/25/30 hp) (updated 08/10) ............................................................... 50-51

Fluid Piping (40/50 hp) ............................................................................................... 52-53

Fluid Specifications ..............................................................................................................2

Inlet Valves ................................................................................................................. 14-19

Motor Mounting (20/25/30 hp) (updated 11/10/09) .........................................................12

Motor Mounting (40/50 hp) (updated 11/10/09) ..............................................................13

Ordering Replacement Parts ...............................................................................................1

Receiver (20/25/30 hp) ............................................................................................... 48-49

Recommended Spare Parts (updated 12/15/09) .................................................................3

Reservoir (20/25/30 hp) .............................................................................................. 54-55

Reservoir (40/50 hp) ................................................................................................... 56-57

Serial Number Identification ................................................................................................1

Shaft Seal Kit ...............................................................................................................4/6/8

Book Update: 05/01/09all groUps and part nUmBers verified and Updated.

added 50 hp data & receiver option.

Quincy Compressor - QGD

Airend (50 hp, 100/125#) - 147250-001Airend(s) (20/25/30 hp)Airend(s) (40 hp/50 hp, 150#) - 146842-003/-103/-004Air Filter - 146903-001 thru -008Air Piping (20/25/30 hp) - 146922-001/-002Air Piping (40/50 hp) - 146933-001/-002Cabinet (20/25/30 hp) - 147514-001/-002Cabinet (40/50 hp) - 146939-001/-002Control Piping (20/25 hp, gauge) - 147314-001 thru -004Control Piping (40/50 hp, gauge) - 147314-013 thru -016Control Schematic (20/25 hp, gauge)Cooler (20/25/30 hp) - 146901-002/-003Cooler (40/50 hp) - 146926-001/-003Decals - 146955-020/-025/-030/-040/-050Drive Coupling - 146902-001/-002/-003/-004Electrical Control & Starting (gauge control)Electrical Control Diagram (full voltage, auto dual)Fluid Piping (20/25/30 hp) - 146908-001/-002Fluid Piping (40/50 hp) - 146924-001/-002Fluid SpecificationsInlet Valve (20/25/30* hp) - 128900-006/-007Motor Mounting (20/25/30 hp) - 146904-001/-002Motor Mounting (40/50 hp) - 146937-001/-002/-003Ordering Replacement PartsReceiver (20/25/30 hp) - 147593-001Recommended Spare PartsReservoir (20/25/30 hp) - 146910-001Reservoir (40/50 hp) - 146923-001/-002Serial Number IdentificationShaft Seal Kit - 140209