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5.PARTS AND COMPONENTS
Fig.01 shows the major components:
a
Inlet connection
b
Outlet connection
c
Mains indicator
d
Pump running indicator
e
Fault indicator (dry running)
f
Reset button
g
Pressure gauge
6.OPERATION
The appliance activates the pump for about 15 seconds when it is powered.
The pump starts every time it senses a pressure drop within the system, for
example when a tap is opened.
Unlike traditional water system equipped with pressure switch and pressure
tank, it is the minimum flow that determines when the pump should stop,
rather than the cut-out pressure. The device delays the pump from stopping
for a further 7 – 15 seconds, thus reducing pump cycling in low flow
conditions.
7.INSTALLATION
7.a HYDRAULIC CONNECTIONS
Hidrotank-H1 can be installed either in a vertical or a horizontal position,
anywhere between the pump outlet and the first outlet (tap). Care must be
taken to ensure that the direction of the arrow on the cover is in the same
direction of the flow of the fluid within the pipes (fig. 08). All hydraulic
connections must be properly tightened. An adequate pressure reducing unit
must be fitted on the delivery port of any pump exceeding 10 bar working
pressure.
CAUTION: With the exception of submersible pumps, installing a non-
return valve between the pump outlet and the Hidrotank-H1 inlet may
adversely affect pump operation. (The pump may fail to stop)
If it is necessary to install a non-return valve, this must be mounted at least 3
meters away from the device (fig. 07).
In the case of very high flow rates, the Hidrotank-H1 device can be installed in
a "by-pass" mode, in parallel with a non-return valve placed on the main
outlet, as shown in Fig. 06, to reduce pressure drop.
h
Supply terminals
i
Load terminals (pump)
j
Cut-in pressure adjustment
screw
k
Tank pre-charge valve
l
Pre-charge pressure gauge
(optional)
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