Performance Charts - VERDER VERDERAIR VA-E25 Operation

Performance Charts

Performance Performance
Test Test Conditions: Test Conditions: The pump was tested in water with Conditions:
the inlet submerged. The air pressure was set 0.7 bar
(10 psi) higher than the outlet pressure.
How to to to Use How How Use the Use the Charts the 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.
4 4 4 - - - Pole Pole AC AC Pump Pump with
Pole AC Pump
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.
0.55, 5.5
(80)
0.48, 4.8
(70)
0.41, 4.1
(60)
0.34, 3.4
Outlet
Outlet Outlet
(50)
Pressure Pressure Pressure
0.28, 2.8
MPa, bar bar
MPa, MPa, bar
(40)
(PSI) (PSI) (PSI)
0.21, 2.1
(30)
0.14, 1.4
(20)
0.07, 0.7
(10)
0
859.0510
Charts
Charts
with 1.5 1.5 kW kW VFD VFD (BC,
with 1.5 kW VFD
Pump Speed Speed – – – Cycles
Pump Pump Speed
0 36 72
0 19 38
(5) (10)
Fluid Fluid Flow Fluid
2. 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.
3. To prevent inlet cavitation erosion, the
Positive Suction Head Available (NPSHa)
system should be above the
Head Required (NPSHr)
(BC, B1, B1, B2) B2)
(BC, B1, B2)
Cycles per per Minute Minute
Cycles per Minute
109 145 181
A
B
57 76 95
(15) (20) (25)
Flow Flow — — — lpm lpm (gpm) lpm (gpm) (gpm)
Performance Charts
Net Positive Suction
line shown on the chart.
217 253 290
24.4
(80)
21.3
(70)
18.3
(60)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3.1
(10)
0
114 132 151
(30) (35) (40)
Net
of your
NPSHr
NPSHr NPSHr
meters WC meters meters WC WC
(feet WC) WC)
(feet (feet WC)
23