German
26 WILO SE 11/2012
6.2 Function of the product
Variable speed control (Fig. 8)
The pump's speed is switched in three stages using a rotary
knob. The speed in the smallest stage is approx. 40 to 50% of
the maximum speed with a reduction of the current consump-
tion to 50%.
7 Installation and electrical connection
DANGER! Risk of fatal injury!
Improper installation and electrical connection can result in
fatal injury.
• Installation and electrical connection may only be carried out
by qualified personnel and in accordance with the applicable
regulations.
• Adhere to regulations for accident prevention
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.
• 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.
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