BE8140
Edition 10/2021
Page 5 of 10
5.2 Electric wiring
All service work must be carried out by quali-
fied service personnel. Pump must be discon-
nected from the power source and all rotating
parts must stand still. Reassure that pump is
disconnected from power source and cannot be
switched on. Verify that there is no voltage at
the terminal board!
According to the European Standard EN809 a
motor overload must be installed and properly set
to the full load amps stated on the pump name
plate.
It is the responsibility of the machine operator to
decide whether or not an additional emergency
switch must be installed.
5.2.1
Circuit
Tension voltage and frequency must correspond
with the shown specification on the nameplate
.
The pump must be wired so that a solid longterm
electrical connection is ensured. Establish a solid
ground connection.
The electrical wiring must be performed accord-
ing to the wiring diagram shown inside the
terminal box cover. (Please see above sample
wiring diagrams)
Wiring diagram e.g.
There may be no foreign objects such as dirt,
particles or humidity inside the terminal board.
Mount terminal board cover to motor tight against
dust and humidity and close up all unused wiring
ports.
ATTENTION
When Variable Frequency Drives are used interfer-
ing signals might occur.
Non-sinus shaped supply voltage from a variable
frequency drive might result in elevated motor
temperatures.
6 Start up / Shut down
6.1 Start up
ATTENTION
Switch off at the mains.
After connection the electrical wires, close the
terminal box. Briefly start the motor (max. 30 sec.)
and check the rotation according to the arrow on
the top of the motor.
If the direction is incorrect change over two of the
power leads.
6.2 Shut down
All service work must be carried out by qualified
service personnel. Pump must be disconnected
from the power source and all rotating parts must
stand still. Reassure that pump is disconnected
from power source and cannot be switched on.
Verify that there is no voltage at the terminal board!
Open terminal box and disconnect the power leads.
Empty out the pump.
7 Operation
Liquid level
These pumps are not self-priming and must be
gravity fed.
Possible leakage must be drained away so as to
prevent any risk to persons or the environment.
If the pump should lock up and cease, shut
pump down (see 6.2) and disconnect from
power supply. Pump must be uninstalled and
removed from the system prior to its repair.
Star connection
3 x 400 V, 50 Hz
resp. 380-415 V, 50 Hz
Delta connection
3 x 230 V, 50 Hz
resp. 220-240 V, 50 Hz
Screw plug
Oil inspection window
execution-GD only.
Leakage G 1/8
