Quincy Compressor QSI Series, Instruction Manual

Page: 130 / 142

Appendix A - Technical Data
128
Quincy Compressor-QSI
®
QSI 1000

Standard

Full Load Operating Pressure psig 100 110 125
Maximum Operating Pressure psig 115 125 140
Minimum Operating Pressure psig

75

Maximum Ambient Operating Temperature:
Less Cabinet °F

115

With Cabinet °F

110

Minimum Ambient Operating Temperature °F

32

Compressor Drive Motor HP

200 250
Rotor Diameter mm

321

Male Rotor Speed rpm

1785 1790
Female Rotor Speed rpm

1190 1193
Rotor Tip Speed m/sec.

30.03 30.11
Inlet Capacity acfm 1014 1010 1003
Displacement at Operating Speed cfm

1120 1123
Volumetric Efficiency % 90.5 90.2 89.3
Aftercooling
Heat Rejection: Fluid Cooler BTU/min. 7609 7730 8310
Aftercooler BTU/min. 1530 1610 1731
Aftercooler Approach (standard conditions) °F

3-5

Maximum Allowable Static Backpressure in./H
2
O

0.125

Fan Motor HP

5

Fan Motor rpm

1180

Fan Flow cfm

19300

Water-cooled Cooling
Recommended Inlet Water Pressure psig

40-100

Vent Fan Motor HP

1/2

Aftercooler Approach to Cooling:
Water Temperature °F

13-18

Water Flow less Aftercooler at: 50°F gpm

10.6 13.2
70°F gpm

14.8 19.6
90°F gpm

25.6 42
Water Flow with Aftercooler at: 50°F gpm

14.1 17.4
70°F gpm

19.1 25.5
90°F gpm

32.4 53
Compressor Fluid
Total Fluid Capacity gallons

46

Reservoir Fluid Capacity gallons

37.25

Fluid Flow gpm

59.5

Typical Fluid Carryover ppm

1.5-5

Normal Airend Discharge Temperature °F

175-195

Sound (at 1 meter)
Unenclosed (AC/WC) dB(A)

89/86

Standard Cabinet (AC/WC) dB(A)

85/79

Low Sound Cabinet (AC) dB(A)

82
