Lescheider Weg 6-8 • D-53773 Hennef-Bierth • Tel. +49 2248 9173-0 • Fax -79 • www.kunststoff-mueller.de
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Piping connections must be flexible. Suction inlets and pressure outlets may not be mechanically
stressed by piping connections.
Fans may not be operated when uninstalled.
When installing fans make sure the motor ventilation apertures remain unobstructed and that no heated
cooling air (e.g. from adjacent plant) is sucked in by the motor.
If the motor is installed in the open the information in the motor operating instructions must be adhered
to.
9.1
Electrical connection
Electrical connection may only be carried out by properly qualified staff (electricians).
In wiring the equipment make sure of the correct (star, delta) connection, voltage level and
frequency. In motors with reversible polarity check whether separate windings or “dahlander”
windings are used. Refer to the scope of delivery in Appendix A.6.
A suitable motor protection switch (overcurrent protection) must be installed and wired to
prevent overheating due to overload. If this is not included in the scope of delivery then the
operator must install same.
Fans are connected to the electricity supply via a terminal box. Electrical installation must
adhere to the motor operating instructions (please refer to same).
Fans can be switched electrically dead using a maintenance switch (optional) so that
maintenance and repair work can be carried out. Refer to the scope of delivery in Appendix A.6.
If the motor has a positive temperature coefficient thermistor (PTC) then same must be wired up
and monitored by a suitable evaluation device.
Earth fan and motor using the earthing points provided on the fan block.
Data of the electric equipment installed including the drive motor is given in Appendix A.6.
