8. CUT-IN PRESSURE ADJUSTMENT
CAUTION: Turning the adjustment screw will not alter the maximum
pressure delivered by the pump!
The pressure is factory pre-set at 1.5 bar, which is optimal for most
applications. Different working pressures may be obtained by adjusting the
screw on the inner flange, which is marked by the s and-.
You may need to change the factory-adjusted pressure settings:
1) If the tap situated at the highest point is more than 15 metres above the
Brio Tank (fig. 08 – Hmax: 30 mt)
2) For increased load, i.e. when the load pressure is added to the pump
pressure (max. 10 bar).
CAUTION: It is important that the MAXIMUM PRESSURE of the
PUMP is at LEAST 1.0 BAR HIGHER THAN the cut-in pressure set
ON THE BRIO TANK device.
9. COMMISSIONING
CAUTION: If the water level happens to be below the level at which the
pump is installed (negative head), it is imperative to use a suction hose
complete with foot valve to prevent water from draining back into the
well.
Before switching on, make sure that both the suction pipe and the pump are
primed. Start the pump by switching on the Brio Tank device. As soon as the
pump stops running, open the tap positioned at the highest point within the
system.
If there is a steady flow from the tap, and the pump runs uninterruptedly, the
commissioning procedure has been successful. If there is no continuous flow,
try to run the pump for a short while by holding down the RESET button. If the
problem persists, disconnect the Brio Tank device and repeat the whole
procedure.
