DAB DAB E.SYBOX, Инструкция по установке и обслуживанию

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ENGLISH
GB
48
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 instal
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lation of the system may be defined “above head” or “below head”. In particular
the installation is defined “above head” when the pump is placed 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 a screwdriver, remove the filling cap which,
for the horizontal configuration, 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: to en
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sure optimum filling it is convenient to open also the loading door on Face A
(Fig.1), used for filling in the vertical configuration, so as to let all the air out,
which otherwise could remain trapped in the system; take care to close the
openings correctly once the operation is completed. The quantity of water
with which to fill the system must be at least 0,7 litri almeno. litres. It is recom
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mended to fit a non-return valve at the end of the suction pipe (foot valve) so
as to be able to fill it quickly 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 (0,7 …).
Installation “below head”: if there are no check valves between the water de
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posit and the system (or if they are open), it loads automatically as soon as it is
allowed to let out the trapped air. So slackening the filling cap (Face F - Fig.1)
enough to vent the air allows the system to load completely. You must survey
the operation and close the loading door as soon as the water comes out (how
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ever it is recommended to fit a check valve in the section of the 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 installa
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tion over head.
3 - COMMISSIONING
The suction depth must not exceed 8 m.
3.1 - Electrical Connections
To improve immunity to the possible noise radiated towards other appli
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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
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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 de
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vices connected to it and on the quality of the line.
The differential switch protecting the system must be correctly
sized and must be of the “Class A” type. The automatic differen
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tial switch must be marked with the following two symbols:
Figure 11