Wilo 4032954 Notice De Montage Et De Mise En Service page 22

English
7.1 Installation
• Only install the pump after all welding and soldering work has
been completed and, if necessary, the pipe system has been
flushed through.
• Install the pump in a readily accessible place for easy inspection
and dismantling.
• When installing in the feed of open systems, the safety supply
must branch off upstream of the pump (DIN EN 12828).
• Install check valves upstream and downstream of the pump to
facilitate a possible pump replacement.
• Perform installation so that any leaking water cannot drip
onto the control module.
• To do this, align the upper gate valve laterally.
• In thermal insulation work, make sure that the pump motor and
the module are not insulated. The condensate-drain openings
must remain uncovered (Fig. 3, item 2).
• Install with the power switched off and the pump motor in a
horizontal position. See Fig. 2 for installation positions of the
pump.
• Direction arrows on the pump housing and the thermal insula-
tion shell (accessories) indicate the direction of flow (Fig. 3,
item 1).
• Use a open-end wrench to prevent the pump from twisting
(Fig. 4).
• The motor housing can be twisted after undoing the motor
attachment screws if it is necessary to position the terminal box
(Fig. 5).
Note: Generally, turn the motor head before the system is
filled.When turning the motor head in an installation which is
already filled, do not pull the motor head out of the pump hous-
ing. Turn the motor head with a small amount of pressure on the
motor unit so that no water can come out of the pump.
12 WILO SE 03/2015