BE6100
Edition 08/2018
Page 8 of 13
5.2 Electric wiring
Verify that there is no voltage at the terminal
board!
The motor is surface-cooled and compliant with DIN
IEC 34 and EN 60034 (protection degree IP 55).
According to the European Standard EN 809 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 termi-
nal box cover. (Please see above sample wiring
diagrams)
Wiring diagram e.g.
Standard motors are operated in the delta connection
but can also be started up with a star-delta start up
unit in order to reduce the in rush current. In this case,
make sure you start up the pump with minimal back
pressure, as otherwise the pump may run backwards
when switching over from star to delta!
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 tem-
peratures.
6 Start up / Shut down
6.1 Start up / Turn motor on
Open all valves in discharge line completely and
de-energize pressure relief valve (start up pump
without any backpressure).
Open the shutt off valve on the suction-side of the
pump.
Ensure sufficient liquid level in tank.
In case of a horizontal installation, the pump must
be filled prior to initial start-up.
Attention! The temperature difference between
pump and the pumped medium should be minimal
prior to start-up to avoid thermal shock!
After connecting the electrical wires, close the
terminal box, switch on the motor and check for the
direction of rotation in the following manner:
ATTENTION
The motor’s direction of rotation must correspond
with the pump’s directional arrow (direction of rota-
tion is clockwise with a view onto the fan cover).
Check the pumps operation with 2 people, i.e. 1
person should start the motor as recommended
(running for 1 sec. max.) and the other person
should monitor the direction of the motor.
It is not permitted to run the pump without any
medium (dry run). This can damage the pump. Do
not put defective pumps back into operation!
Check suction and pressure pipes for any leaks;
avoid admission of air into the pump system.
Monitor pressure and temperature monitoring
devices frequently.
6.1.1
Initial start-up of pumps with mechani-
cal seal
–G
During the initial start
–up or after longer storage
spray the interior of the pump with spray oil and
turn by hand if applicable.
Start pump with minimized pressure and bleed air
completely (short run time!)
Maximum operating pressure must be reached
immediately afterwards resulting in ventilation and
lubrication of the sealing area.
Foot-mounted inline Pumps with FFS-Standard
Operating pressure must be larger than incoming
supply pressure at the pump suction,
Attention!
Danger of overheating the seal
No negative pressure or vacuum conditions on the
suction side,
Attention!
Dry running of the mechanical seal.
6.2 Turn off
Turn off motor.
For longer downtime periods, dismantle and
preserve pump
6.3 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!
Star connection
(Standard up to 5.5 kW)
3 x 400 V, 50 Hz
resp. 380-415 V, 50 Hz
resp.
Delta connection
(Standard as of 6.0 kW)
3 x 400 V, 50 Hz
resp. 380-415 V, 50 Hz
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.
