Open a tap to start up the pump, close it again
and wait for the pump to stop in order to read
the system pressure on the pressure gauge,
which is normally factory-calibrated at 45 psi.
To adjust the pressure open the tap again, turn
the knob in a clockwise direction to increase the
pressure, and in a counterclockwise direction
to reduce it, close the tap and with the pump
stopped read the pressure set on the pressure
gauge.
Repeat this operation until the desired pressure
value is reached
PRESSURE ADJUSTING PROCEDURE
The system pressure (P2) must be approximately 25 psi lower than the pump pressure (P1), and approximate-
ly 15 psi higher than the pressure in the water column feeding the TOTAL CONTROL (P3).
If the pressure of the pump (P1) fails to reach the values indicated in the pressure adjustment table, the pump
will stop working.
In the event of the height of the water column (P3) being higher than the values indicated in the pressure ad-
justment table, the pump will turn on without starting to operate.
To overcome this shortcoming either positions the device higher up in order to recreate the conditions specified
above or set a higher system pressure (P2).
Adjusting example:
P1- Pressure pump (maximum 174 psi)
P2 - System pressure (maximum 95 psi)
P3 - Water column pressure
P4 - Tap pressure
How to deliver a 45 psi pressure to the tap located at a height
of 90 ft:
Pressure requested by the service = 45 psi = P4
Service height 90 ft = 40 psi = P3
The system pressure (P2) must be adjusted to 85 psi, seeing
that P2 = P4 + P3.
The pump pressure (P1) must be a minimum of 110 psi, seeing
that P1 = P2 + 25 psi.
