Wilo Easy Star Series, Инструкция по установке и эксплуатации

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16
ENGLISH
5.2 Electrical connection
Electrical connection
should be made by a
qualified electrician.
Current national regula-
tions must be observed
(e.g. VDE regulations in
Germany).
– Check that the mains current
and voltage comply with the
data on the rating plate.
– Make connection as in fig. 6:
– Mains connection: L, N, PE.
– mains fuse: 10 A, inert.
– The connecting cable can be
fed through the PG screwed
joint either to the left or right.
The screwed joint and the
blanking plugs (PG 11) must if
necessary be exchanged.
– Pump / installation must be
earthed in compliance with
regulations.
– The electrical connection is to
be made using fixed connecting
cable to VDE 0700/Part 1 fitted
with a plug-and-socket device or
an all-pole switch with at least 3
mm contact gap.
– A connecting cable with an ade-
quate external diameter (e.g.
H05VV-F3G1.5) is required to
protect against dripping water
and relief of tension on the PG
screwed joint.
– If the pumps are used in installa-
tions with water temperatures in
excess of 90 °C, a heat-resistant
connecting cable must be used.
– The supply cable must be laid in
such a way that it never touches
the pipework and/or the pump
and motor casing.
Caution risk of short-
circuit!
After electrical connec-
tions the terminal box
cover must be closed
properly, to protect
against moisture.
6 Operation
6.1 Filling and venting
Fill and ventilate the system pro-
perly. The pump rotor space is
usually ventilated automatically
after runing for a brief time. Brief
dry running will not damage the
pump. If, however, it should prove
necessary to ventilate the rotor
space directly, use the following
procedure:
– Switch off pump,
– Close shut-off valve on pressure
side,
– Open ventilation screw carefully
(see fig. 7),
Depending on the sys-
tem pressure and the
temperature of the pum-
ping medium, hot pum-
ping medium in the form
of a liquid or steam may