Appendix A - Technical Data
Quincy Compressor-QSI
®
127
QSI 750
Standard
Full Load Operating Pressure
psig
100
110
125
150
Maximum Operating Pressure
psig
115
125
140
165
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
150 200
Rotor Diameter
mm
255
Male Rotor Speed
rpm
1790 1785
Female Rotor Speed
rpm
1193 1190
Rotor Tip Speed
m/sec.
23.9
23.83
Inlet
Capacity
acfm
760 757 751 744
Displacement at Operating Speed
cfm
831.3
828.9
Volumetric Efficiency
%
91.4
91.1
90.6
89.7
Aftercooling
Heat Rejection:
Fluid Cooler
BTU/min.
5755
6058
6512
7327
Aftercooler
BTU/min.
1187
Aftercooler Approach (standard conditions)
°F
3-5
Maximum Allowable Static Backpressure
in./H
2
O
0.125
Fan Motor
HP
5
Fan Motor
rpm
1165
Fan Flow
cfm
13500
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
7.5
8.9
70°F gpm
10.1
12.6
90°F gpm
16.1
22.3
Water Flow with Aftercooler at: 50°F
gpm
9.9
11.7
70°F gpm
13.1
18.3
90°F gpm
20.4
28
Compressor Fluid
Total Fluid Capacity
gallons
40
Reservoir Fluid Capacity
gallons
32.5
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)
89/87
Standard Cabinet (AC/WC)
dB(A)
87/80
Low Sound Cabinet (AC)
dB(A)
80
Summary of Contents for QSI Series
Page 2: ......
Page 7: ...Section I General Quincy Compressor QSI 5 MODEL IDENTIFICATION...
Page 62: ...Section IV Operating Procedures 60 Quincy Compressor QSI 1 Week Timer 2 Remaining Running Time...
Page 79: ...Section IV Operating Procedures Quincy Compressor QSI 77...