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311593N 15
FIG. 7: Motor Speed and Flow Chart
Flow Rate
gpm (lpm)
30 (114)
25 (95)
20 (76)
15 (57)
10 (38)
5 (19)
Pump Cycles per Minute
0
4 8 12 16 20 24
10
(300)
20
(600)
30
(900)
40
(1200)
50
(1500)
60
(1800)
Motor Speed in Hz (rpm)
0
A
B
C
Equations for each line:
2000 cc
Flow (gpm) = 1.13 x
1500 cc
Flow (gpm) = 0.811 x
1000 cc
Flow (gpm) = 0.598 x
750 cc
Flow (gpm) = 0.406 x
30 x VFD (Hz)
75.16
30 x VFD (Hz)
75.16
30 x VFD (Hz)
75.16
Key:
A 750 cc Pumps
B 1000 cc Pumps
C 1500 cc Pumps
D 2000 cc Pumps
30 x VFD (Hz)
75.16
D