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9 WILO SE 05/2011
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.
• Mount the pump in a readily accessible place for easy inspection
and dismantling.
• When installing in the supply leg 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.
• Install without tension and with the pump motor in the hori-
zontal position. See fig. 3 for installation positions of the pump.
• Direction arrows on the pump housing indicate the direction of
flow.
• If the installation position of the module is changed, the motor
housing has to be turned as follows:
• Loosen the internal hexagon screws,
• Turn the motor housing, including control module.
CAUTION! Risk of damage to the pump!
The gasket may be damaged when the motor housing is
turned. Replace defective gaskets immediately.
• Twist the internal hexagon screws back in and tighten them,
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