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72
2.2.3 Loading Operation
Installation above head and below head
With reference to its position with respect to the water to be pumped, the
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at a level higher than the water to be pumped (e.g. pump on the surface and
water in a well); vice versa it is “below head” when the pump is placed at a
level lower than the water to be pumped (e.g. overhead cistern and pump
below).
Installation “above head”: with the aid of the accessory tool (Fig.3_point 5) or
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tion, is the one on Face F (Fig.1). Fill the system with clean water through the
loading door, taking care to let the air out. The quantity of water with which to
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too during the loading operation. In this case the quantity of water necessary
for the loading operation will depend on the length of the suction pipe (1.5
litres + …).
Figure 12
x4
x4
Installation “below head”: if there are no check valves between the water
deposit and the system (or if they are open), it loads automatically as soon as
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Fig.3) enough to vent the air allows the system to load completely. To slacken
the cap, use the accessory tool (Fig.3_point 5) or a screwdriver. You must
survey the operation and close the loading door as soon as the water comes
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suction pipe and to use it to control the loading operation with the cap loose).
Alternatively, in the case where the suction pipe is intercepted by a closed
valve, the loading operation may be carried out in a similar way to the one
described for installation over head.
3 - COMMISSIONING
The pressure at pump input must not be higher than 2 bar.
The suction depth must not exceed 8 m.
3.1 - Electrical Connections
To improve immunity to the possible noise radiated towards other appli-
ances it is recommended to use a separate electrical duct to supply the
product.
Attention: always respect the safety regulations!
Electrical installation must be carried out by an expert, autho-
rised electrician, who takes on all responsibility.
The system must be correctly and safely earthed as required by
the regulations in force.
The line voltage may change when the electropump is started.
The line voltage may undergo variations depending on other
devices connected to it and on the quality of the line.
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