BE936
Edition
09/2021
Page 5 of 9
5 Installation and Connection
5.1 Mechanical installation
During any assembly or disassembly process the
pumps must be secured against tipping trough
ropes for example at all times.
Pumps must be mounted securely. Piping, tank and
pumps must be mounted without any tension.
The inlet is at the bottom of the immersed pump
body. The distance between the inlet and the tank
bottom must be so large that the inlet can not be
blocked by deposits during longer shutdowns.
To obtain the full flow rate it is recommended to
choose for the pipework the nominal bore diameter
of the pumps cross section for connection. There-
fore pipe bends should be used, not pipe angles!
The pipework must be qualified for occuring hy-
draulic pressure.
ATTENTION
Maximum tightening torque for piping connec-
tions is 13 Nm !
When installed the space around the pump
must be large enough to provide sufficient
cooling of the motor.
Do not prop up the pressure line via the joining
socket.
The pump must be mounted in that way that
rotating parts under the cover of the coolant
tank can not be touched!
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 long term
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.
Star connection
3 x 400 V, 50 Hz
resp. 380-420 V, 50 Hz
Delta connection
3 x 230 V, 50 Hz
resp. 220-240 V, 50 Hz
