Wilo Wilo-Star AC, Installation And Operating Instructions Manual

Page: 18 / 150

18
ENGLISH
– Pump to be mounted with the shaft
in the horizontal plane in such a
way that it is not stressed by the
pipework. (Installation positions in
Fig. 2).
– An arrow on the pump casing indi-
cates the direction of flow (Fig. 3,
pos.1).
– Secure the pump against twisting
by using a spanner (Fig. 4).
– In order to attain the correct termi-
nal box position the motor housing
can be turned once the motor
fastening screws have been lose-
ned (Fig. 5).
Do not damage the flat
gasket. If necessary
use a new gasket:
Ø
86 x
Ø
76 x 2.0 mm EP.
For units which are to
be insulated, only the
pump housing may be
insulated. The motor
and condensate ope-
nings must remain free
(Fig. 3, pos. 2).
Electrical connection
Electrical connection must be
carried out by a qualified and
licensed electrician in strict
conformity to ruling national
conditions and local regulati-
ons (e.g. VDE regulations in
Germany).
– According to Part 1 of the VDE 0730,
the pump must be connected to the
electrical supply by a solid wire
equipped with a plug connection or
an all-pole switch. The width of the
contact gap must be at least 3 mm.
– To guarantee protection against
dripping water and the strain relief
of the PG screwed joint, a connec-
ting cable of suitable external dia-
meter is to be used (e.g. H 05 VV-F
3 G 1.5).
– When using the pump in units
where the water temperature
exceeds 90 °C, a connecting cable
with corresponding heat resistance
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.
– Check that the mains current and
voltage comply with the data on the
rating plate.
– Make mains connection as shown
in Fig. 6.
– The connecting cable can be fed
through the PG screwed joint either
to the left or right. If necessary, the
blind plug and PG screwed joint are
to be exchanged. If the terminal box
is positioned on the side, always
insert the PG screwed joint from
below (Fig. 5)
Caution risk of short-circuit!
After electrical connections
the terminal box cover must
be closed properly, to protect
against moisture.
– Pump/installation must be earthed
in compliance with regulations.
– When connecting automatic switch-
gear (for double pumps), follow the
appropriate Installation and
Operating Instructions.
ATTENTION!
ATTENTION!