Siting/Installation - Wilo RP Serie Instrucciones De Instalación Y Servicio

ENGLISH
– SK 601, timer box (DOL for non-
overloading 1-phase pumps, 3-
phase in conjunction with contac-
tor boxes SK 602/622 only).
– S2R-h plug-in timer module,
– S2R 2.5, S4R 2.5, S2R 3D, S4R
2.5D control units.
– AS08 µP control box.

5. Siting/Installation

5.1 Installation
– Install pump only after all weld-
ing/soldering on the pipe system
is completed and the pipe system
has been flushed out thoroughly
to be clear of foreign matter and
impurities as these may cause da-
mage to the pump.
– Mount pump in an easily accessi-
ble position in order to facilitate
later inspection and exchange.
– To avoid draining and re-filling the
whole of the pipe system on ex-
change of pump it is recommen-
ded to provide and install isolating
valves at suction and discharge
ports of the pump, to be positio-
ned in such a way to prevent lea-
kage dripping on the pump motor
or its terminal box.
– When installed into the flow pipe
of an open-vented system, the
open safety vent must be connec-
20
ted to the system on the inlet side
of the pump (DIN 4751).
– Pump to be mounted with the
shaft in the horizontal plane in
such a way that it is not stressed
by the pipework. Observe moun-
ting positions as shown in Fig. 2.
– The arrow on the pump housing
indicates direction of flow.
– 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.
CAUTION !
Take care not to da-
mage the housing gasket.
CAUTION !
Thermal insulation of
pump, if applied, must be restric-
ted to the pump housing only. En-
sure that drain holes at motor flan-
ge remain fully open.
– Due care must be given that free
ventilation is not restricted to
pumps equipped or refitted with
plug-in modules.
5.2 Electrical wiring
– Electrical work to be car-
ried out by qualified and
licensed electricians in
strict conformity to ruling
national conditions and
local regulations.
– All wiring and external switchgear
to comply with ruling local regula-
tions (use of conduits and all-pole