VERDER Verderair VA-E80, Operation

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Performance Charts
Performance Performance Performance Charts Charts Charts
Test Test Test Conditions: Conditions: Conditions: The pump was tested in water with
the inlet submerged.
How How
How to
to
to Use
Use
Use the
the
the Charts
Charts
Charts
1. Choose a flow rate and outlet pressure that falls
below the Power Limit Curve. Conditions outside
of the curve will decrease the life of the pump.
2. Choose center section charge pressures below
3.4 bar (50 psi) for maximum life at continuous
duty (shaded area).
3. Set the VFD frequency corresponding to the
desired flow rate. Flow rates will increase with
outlet pressure lower than 0.7 bar (10 psi) and
with high inlet head pressure.
4. To prevent inlet cavitation erosion, the
Net
Positive Suction Head Available (NPSHa) of your
system should be above the
Net Positive Suction
Head Required (NPSHr)
line shown on the chart.
High High High speed speed speed gear gear gear ratio ratio ratio pumps pumps pumps with with with gearmotor gearmotor gearmotor and and and compressor compressor compressor (AC5) (AC5) (AC5) or or or (A25) (A25) (A25)
KEY KEY KEY
A A A Power Limit Curve
B B
B
Net Positive Suction Head Required
The shaded area is recommended for continuous
duty.
Pump Pump Pump Speed Speed Speed Cycles Cycles Cycles per per per Minute Minute Minute
Outlet Outlet Outlet
Pressure Pressure Pressure
bar bar bar
(MPa, (MPa,
(MPa, PSI)
PSI)
PSI)
0
0.7
(0.07, 10)
1.4
(0.14, 20)
2.1
(0.21, 30)
2.8
(0.28, 40)
3.5
(0.35, 50)
4.1
(0.41, 60)
4.8
(0.48, 70)
0 379
(100)
189
(50)
568
(150)
757
(200)
946
(250)
0
1.4 (5)
2.8 (10)
4.2 (15)
5.7 (20)
7.1 (25)
8.5 (30)
9.9 (35)
11.3 (40)
12.7 (45)
14.2 (50)
15.6 (55)
17.0 (60)
18.4 (65)
19.8 (70)
B
5
0
C
P
M
1
0
0
C
P
M
1
5
0
C
P
M
2
0
0
C
P
M
A
NPSHr NPSHr NPSHr
meters
meters meters
WC
WC
WC
(feet
(feet
(feet WC)
WC)
WC)
Fluid Fluid Fluid Flow Flow Flow — — — lpm lpm lpm (gpm) (gpm) (gpm)
22 859.0634