Operating / Assembly manual
16
Schmalenberger GmbH + Co. KG
D-72072 Tübingen / Germany
Pump type WK/ SMK
Version: 27220 - E
4.
Electrical Connection
4.1.
Electrical Connection - General
Connection tasks must only be performed by a certified installation electrician. Applicable
DIN VDE-
requirements
must be observed.
Compare the existing mains power supply with the information on the factory plate of the motor and
select a suitable circuit.
We recommend using a motor protection device.
Danger of explosion!
If there is danger of explosion, a motor protection device must be installed!
In compliance with VDE 0530-8, threephase motors are always wired for clockwise rotation (looking at
the motor shaft stub).
The direction of rotation of the pump is anti-clockwise as standard (viewed from the suction flange).
Always note the arrow on the pump indicating the direction of rotation.
4.2.
Elec trical Connection - Pump Type WK
Connect the motor according to the circuit diagram in fig. 3 "Delta connection" or fig. 4 "Star
connection".
Make certain:
The mains power connection must only be made via a fixed connection.
There must be no conducting connection from metal components of the motor to the water.
The mains supply line must be equipped with a fault current circuit breaker (rated current error
£ 30 mA) and an all-pole separator with a contact opening of 3 mm.
Equipotential bonding with a cross-section of 10 mm² must be applied on the connection terminal
so identified (on the motor mount or next to the terminal box).
The pump must only be operated with the terminal box cover closed!
