Pentax HidroTanK-H1 Manuel D'instructions page 15

7. b ELECTRICAL CONNECTIONS
Note: All electrical connections should be carried out by qualified personnel
only, as shown in Fig. 2. 04.
In the case of pumps with power exceeding 500 W and an ambient
temperature greater than 25° C, heat-resistant cables (resistant to at least
105°C) must be used. Use only the terminals supplied with the device.
In the version in which the connecting cable is included, simply connect the
power plug of the pump to the Hidrotank-H1's electrical socket and the
Hidrotank-H1 device's plug, into a power outlet. Note: the units supplied with 1
2
mm cables is suitable for maximum loads up to 10A. For higher loads the
supplied electrical cables must be replaced (by qualified personnel), by at
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least 1.5 mm cable.
The pump connected to Hidrotank-H1 must be adequately
protected against current overloads.
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 symbols + 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
Hidrotank-H1 (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 HIDROTANK-H1 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 Hidrotank-H1 device. As soon as
the pump stops running, open the tap positioned at the highest point within the
system.
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