Operation
11
Fig. 8 Connection diagram for TRIVAC B with 50 Hz 3-phase motor
Delta connection Star connection
2.3 Electrical Connections
Before beginning with any work on the
wiring, ensure that mains supply for the
pump is off.
Electrical connections must be done by a
qualified electrician as defined by VDE
0105 in accordance with the VDE 0100
guidelines.
TRIVAC B pumps are supplied without accessories for
electrical connection. They must be connected via the
appropriate cable, and a suitable motor protection
switch. Set the switch in accordance with the rating on
the motor nameplate. Fig. 8 shows the connection for
pumps with 230/380 V, 50 Hz motors. In the case of
pumps equipped as standard with a 60 Hz motor, please
observe the diagram on or at the motor.
After connecting the motor and after
every time you alter the wiring, check the
direction of rotation. To do so, briefly
switch on the motor and check whether a
suitable cover (e. g. a blank flange) is
sucked on at the intake port. If not,
interchange two phases of the
connection. Observe the direction arrow
on the coupling housing!
Warning
Caution
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