Wilo Stratos 1.25x3-20 Notice De Montage Et De Mise En Service page 18

English
• The pump must be installed in an easily accessible position to facilitate
inspection or replacement.
• The pump should never be located at the lowest point of the piping system,
where dirt and sediment collect. Nor should it be located at the highest point of
the piping system, where air accumulates. Please ensure at least a minimum of
three pipe diameters of straight on the suction side of the pump.
• It is recommended that isolation valves be installed on the suction and
discharge side of the pump.
This will save having to drain and refill the system if the pump / pump head
needs exchange-service. The valves are to be installed so that any water that
escape cannot drip onto the pump motor or terminal box.
• An arrow on the pump housing indicates the direction of water flow (fig.1, pos.2).
• Install the pump in an easily accessible place, so that subsequent servicing work
can easily be carried out.
Installation is to be carried out such that dripping water cannot drip onto the
pump motor or control module.
• Pump must be installed with the shaft in the horizontal position in such a way
that it is not stressed by the pipework. (Installation positions in fig. 2). When
installing in confined spaces, for example in compact distributors, the control
module can be placed in a vertical position by rotating the motor, see
chapter 7.1.1.
• In order to obtain the correct terminal box position the motor housing can be
turned after removing the four allen screws (fig. 3).
WARNING! Risk of scalding!
If the pump is already installed in the system, the system must be drained or
the isolating valves on both sides of the pump must be closed before the
allen screws are removed as the pumped liquid may be scalding hot and/or
under pressure.
Do not start the pump until the system has been filled with liquid and
vented.
• Permitted terminal box positions see fig. 2
CAUTION! Possible damage of the pump!
When rotating the motor housing, ensure the O-ring between the cartridge
and pump housing (volute) does not become damaged.
• Carefully lift the pump head and rotate it so the terminal box is in the desired
position. Replace the pump head onto the pump housing and thighten the allen
screws evenly in a diagonal method.
Torque to:
• M6 ............ 7 ft lb
• M10 ........ 22 ft lb
14 Subject to technical alterations! WILO SE 02/2011