Electrical Wiring; Commissioning - Wilo Star-Z 25/2 Einbau- Und Betriebsanleitung

ENGLISH
– The arrow on the pump housing
indicates direction of flow (Fig. 2,
Pos. 1).
ATTENTION!
ATTENTION!
– Due care must be given that free
ventilation is not restricted to
pumps equipped or refitted with
plug-in modules.
ATTENTION!

5.2 Electrical wiring

– Electrical work to be car-
ried out by qualified and
licensed
strict conformity to ruling
national conditions and
local regulations.
12
Star- Z 25 /2 DM:
The motor terminal
box must not face
downwards to avoid
possible moisture
entry. If necessary,
rotate pump head
after undoing the
screws holding the
stator housing.
Take care not to
damage the hous-
ing gasket.
Thermal insulation
of pump, if applied,
must be restricted
to the pumps hous-
ing only. Ensure that
drain holes at the
motor flange remain
fully open (Fig. 2,
Pos. 2).
electricians
– All wiring and external switchgear to
comply with ruling local regulations
(use of conduits, all-pole switches,
air gaps, etc.) in accordance with
the latest edition of IEE wiring regu-
lations).
– In order to preserve protection against
moisture entry and to ensure a firm
gland grip the mains cable must
have a sufficiently large outside dia-
meter (f.e. H 05 V V-F 3 (4) G 1,5).
– Heat-resisting cable must be used in
the pump which is installed in systems
with water temperatures above 90°C.
– Cable leads to be routed in such
a way to avoid any contact with pipe
work and/or pump or stator housings.
– Check available power supply and
voltage.
– Observe pump name plate data
– All wiring to be carried out according
to wiring diagram (Fig. 4/5):
– 4: 3~400/415 V,
2a:non-overloading
– 5: 1~230/240 V,
2b:non-overloading
– Observe locally ruling earthing regu-
lations.

6. Commissioning

6.1 System filling and venting
in Ensure that the pipe system is
properly filled. The pump vents itself
automatically after a short operatio-
nal period. Short-term dry-running will