Description Of Product And Accessories; Siting/Installation; Scope Of Supply - Wilo Star-Z 20/1 Instrucciones De Instalación Y Funcionamiento

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4. Description of
Product and
Accessories
4.1 Description of Water Service
Pumps
Series Star-Z circulating water service
pumps have been specially designed
for use in conjunction with domes-
tic/drinking water service systems.
They are, by material selection and
design, corrosion proofed against any
residual parts in domestic/drinking
water. Speed setting: Z 25/6 pump is
equipped with a rotary switch in the
terninal box to enable manual;
3-speed control [1(max) - 2 - 3(min)].
At minimum speed the maximum
speed is reduced to approx.
40 ... 50 %.
The power input is reduced to
approximately 50 %.

4.2 Scope of Supply

– Pump, complete.
– Installation and Operating
Instructions.
4.3 Accessories
Accessories available and /or required
on separate order:
– Union for pipe connections,
– timer switch SK 601 (DOL for
non-overloading 1-phase pumps,
3-phase only in conjunction with
contactor boxes SK 602 /622 or
starter/contactors,
– S1R-h plug-in timer module for
1-phase motors
Z 25/6.

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 thoroughly flushed out to be
clear of foreign matter and impu-
rities, as these may cause damage
to the pump.
– Mount pump in an easily accessible
position in order to facilitate later in-
spection and exchange.
– If used to handle domestic /drinking
water a non-return valve must be
provided and installed at the dis-
charge side.
– To avoid draining and re-filling the
whole of the pipe system on ex-
change of pump it is recommended
to provide and install isolating valves
at suction and discharge ports of the
pump, to be positioned in such a
way to prevent leakage dripping on
the pump motor or its terminal box.
– Pump to be mounted with the shaft
in the horizontal plane in such a way
that it is not stressed by the pipe-
work. Observe mounting positions
as shown in Fig. 1.
ENGLISH
only, except
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