En
gl
is
h (
G
B)
16
4. Starting up the product
On delivery your pump is ready for connection to the
voltage and frequency indicated on the nameplate,
and it was factory-tested prior to shipment.
You can start the pump using either direct-on-line
starting, star-delta starting, soft starter or frequency
converter. The wiring for the start-stop circuit must
be according to fig.
or
Fig. 22
Direct-on-line starting
Fig. 23
Star-delta starting
4.1 Preparations for starting up
•
Turn the propeller or impeller by hand (clockwise
seen from the motor side)
to make sure the
propeller or impeller can rotate freely. See fig.
.
•
Check that the supply voltage and frequency
correspond to the values stated on the
nameplate. If not, do not start the pump.
•
Check that the outer cable sheath is intact so that
water cannot enter the terminal box through the
cables. If you refit the original power cables, cut
off a short piece to ensure that the cable entry
sealing sleeve does not clamp around the cable
at the same point again.
•
Check that the cable entry bushing and the
washers correspond to the outside diameter of
the power cables. When preparing the power
cable conductors for connection to the pump and
the terminal box, it is essential that the ground
(earth) conductor is at least 2 inches (50 mm)
longer than the other conductors after
connection. This is to ensure that if a cable is
accidentally pulled out, the ground (earth)
conductor connection will be the last to be
disconnected.
•
Check the direction of the rotation. See section
4.1.1 Checking the direction of rotation
.
4.1.1 Checking the direction of rotation
Check the direction of rotation before the startup.
There are two methods of checking the direction of
rotation. Both methods are described below.
TM
05
91
6
7
41
1
3
T
M
0
5
9
16
8
4
113
3~
U1 V1 W1
1
2
3
L2
L1
L3
L2
L1
L3
U1 V1 W1
1
2
3
U2 V2 W2
4
5
6
U1 V1 W1
1
2
3
L2
L1
L3
U2 V2 W2
4
5
6
DELTA
STAR
DANGER
Rotating elements
Death or serious personal injury
- Before manual startup or changeover to
automatic control, make sure that no
persons are working on or near the
pump.
DANGER
Electric shock
Death or serious personal injury
- In case the pump is running with wrong
direction of rotation, do not touch the
pump or the cables.
KPL and KWM: Wrong direction of rotation
during operation when the pump is
submerged will lead to damage to the
pump and the column pipe. The pump will
lift up from the seat ring and rotate in the
column pipe causing damage of the power
cables and the pump.
We recommend that you check the
direction of rotation after the pump is
installed in the column pipe but before the
pipe is filled with liquid.
