Grundfos SP User Manual

27
English (US)
9.2 Checking pump performance
The troubleshooting chart on page 28 may
require that you test the pump's performance
against its curve. To do so, perform these steps:
1. Install pressure gauge.
2. Start pump.
3. Gradually close the outlet valve.
4. Read pressure at shut-off.
5. After taking reading, open valve to its
previous position.
6. To calculate pump performance, first convert
psi reading to feet.
For water: psi x 2.31 = ____ feet.
7. Add this to the total vertical distance from the
pressure gauge to the water level in the well
while the pump is running.
8. Refer to the specific pump curve for the shut-
off head (pressure) for that pump model. If
the measured head is close to the curve,
pump is probably OK.

Grundfos SP Specifications

General

Material	Stainless Steel
Pump Type	Submersible
Application	Irrigation
Motor Range	0.37 kW to 4 kW
Liquid Temperature	0 °C to 40 °C
Series	SP
Power Range	0.37 kW to 4 kW
Frequency	50 Hz, 60 Hz
Head	Up to 200 m
Discharge Size	1 inch to 4 inches