4
Starting Pressure Adjustment
(P. Start):
Starting Pressure is the pressure at
which the pump will re-start from the
idle condition. When the water pres-
sure drops to this setting, the pump will
start. This adjustment has no effect on
the maximum system pressure which
is determined solely by your pump’s
maximum output pressure. The pump
controller is factory set to start with a
minimum pressure of 28 PSI (1.9 bar). This pressure can be in-
creased up to 36.25 PSI (2.5 bar) by rotating the screw found at the
back of the cone-shaped end of the device.
To Set the Pump Start Pressure:
1. Read the pressure indicated by the gauge when the pump is
started.
2. Disconnect the power supply.
3. Open a faucet or valve to discharge the pressure.
4. Adjust the screw clockwise to increase (or counter-clockwise to
decrease) the start pressure.
5. Supply power to the controller; if you are not satised with the
adjustment, repeat the operations described above until you
obtain the desired pressure value.
Operating Pressure
The maximum pressure of the pump (closing contact pressure) and
the minimum start pressure must comply with the values shown in
the table otherwise the controller will go into Failure mode. The max-
imum pressure of your pump must exceed the start pressure setting.
The maximum operating height between the pump and the highest
point in the system will depend on the pump start pressure setting.
These limits are specied in the table below.
Start Pressure Max. Operating
Height
Max. Pump Pressure
Greater Than
22 PSI 33 ft 44 PSI
29 PSI 49 ft 51 PSI
36 PSI 66 ft 58 PSI
