VERDER VERDERAIR VA-E25, Операция

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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. The air pressure was set 0.7 bar
(10 psi) higher than the outlet pressure.
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. 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
Net
Positive Suction Head Available (NPSHa) of your
system should be above the
Net Positive Suction
Head Required (NPSHr)
line shown on the chart.
4 4
4---Pole
Pole
Pole AC
AC
AC Pump
Pump
Pump with
with
with 1.5
1.5
1.5 kW
kW
kW VFD
VFD
VFD (BC,
(BC,
(BC, B1,
B1,
B1, B2)
B2)
B2)
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
MPa, MPa,
MPa, bar
bar
bar
(PSI) (PSI) (PSI)
A
B
0
0.07, 0.7
(10)
0.14, 1.4
(20)
0.21, 2.1
(30)
0.28, 2.8
(40)
0.34, 3.4
(50)
0.41, 4.1
(60)
0.48, 4.8
(70)
0.55, 5.5
(80)
0
3.1
(10)
6.1
(20)
9.1
(30)
12.2
(40)
15.2
(50)
18.3
(60)
21.3
(70)
24.4
(80)
0 19
(5)
38
(10)
57
(15)
76
(20)
95
(25)
114
(30)
132
(35)
151
(40)
0 36 72 109 145 181 217 253 290
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)
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