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en - Translation of the original instructions

Note:

NOTICE:

• If the transmission of vibrations can be disturbing, provide vibra-

• Never operate the pump below the minimum rated flow, when dry,

or without prime.

tion-damping supports between the pump and the foundation.

• Never operate the pump with the delivery ON-OFF valve closed

for longer than a few seconds.

• Never operate the pump with the suction ON-OFF valve closed.
• Do not expose an idle pump to freezing conditions. Drain all liquid

that is inside the pump. Failure to do so can cause liquid to freeze
and damage the pump.

• The sum of the pressure on the suction side (mains, gravity tank)

and the maximum pressure that is delivered by the pump must
not exceed the maximum working pressure that is allowed (nomi-
nal pressure PN) for the pump.

4.3.2 Piping checklist

Check that the following are adhered to:

• The suction lift line has been laid with a rising slope, at positive

suction head line with a downward slope towards the pump.

• The nominal diameters of the pipelines are at least equal to the

nominal diameters of the pump nozzles.

• The pipelines have been anchored in close proximity to the pump

and connected without transmitting any stresses or strains.

CAUTION:

• Do not use the pump if cavitation occurs. Cavitation can damage

the internal components.

Welding beads, scale and other impurities in the piping dam-
age the pump.

Noise level

• Free the piping from any impurities.

• If necessary, install a filter.
• Follow the “Permitted Forces and torques on the flanges", see

Figure 21

and

Table 22

for casing material cast iron (C) and ductil

iron (D) and see

Figure 21

and

Table 23

for casing material stain-

less steel (N) and duplex (R).

For information about noise levels of pump alone and pump equipped
with standard supplied motor, see Table 10.

5.1 Fill the pump

For information about Additional pump connections, see

Figure 25

The data on forces and moments apply to static pipelines only. The
values are only applicable if the pump is bolted to a rigid and level
foundation.

Installations with liquid level above the pump (suction head)

For an illustration that shows the pump parts, see

Figure 26

Close the on-off valve located downstream from the pump.

4.3.3 Electrical installation

Remove the fill (3)or gauge plug (1) and open the on/off valve up-
stream until the water flows out of the hole.

Remove the screws of the terminal box cover.

Connect and fasten the power cables according to the applicable
wiring diagram.

Close the fill (3) or gauge plug (1).

For wiring diagrams, see

Figure 24

. The diagrams are also avail-

Installations with liquid level below the pump (suction lift)

able on the back of the terminal box cover.

For an illustration that shows the pump parts, see

Figure 27

Connect the ground (earth) lead.

All pipe system empty:

Make sure that the ground (earth) lead is longer than the
phase leads.
Connect the phase leads.

Open the on-off valve located upstream from the pump and
close the

Remove the fill plug (3) and the gauge plug (1) use a funnel
to fill the pump through the fill plug (3) until water flows out of
this hole.

Mount the terminal box cover.

NOTICE:

Tighten the fill plug (3) and the gauge plug (1).

Tighten the cable glands carefully to ensure protection against ca-
ble slipping and humidity entering the terminal box.

Filled discharge pipe system:

Open the on-off valve located upstream from the pump and
close the on-off valve downstream.

If the motor is not equipped with automatic reset thermal protec-
tion, then adjust the overload protection according to the list be-
low.

b)
c)

Remove the gauge plug (1) until water flows out of this hole.
Tighten the gauge plug (1).

• If the motor is used with full load, then set the value to the

nominal current value of electric pump (data plate)

• If the motor is used with partial load, then set the value to

the operating current (for example measured with a current
pincer).

• If the pump has a star-delta starting system, then adjust the

thermal relay to 58% of the nominal current or operating cur-
rent (only for three-phase motors).

5.2 Check the rotation direction (three-phase motor)

Follow this procedure before start-up.

Locate the arrows on the adaptor or the motor fan cover to deter-
mine the correct rotation direction.

Start the motor.

Quickly check the direction of rotation through the coupling guard
or through the motor fan cover.

Stop the motor.

5 Commissioning, Startup,
Operation, and Shutdown

If the rotation direction is incorrect, then do as follows:

a)
b)

Disconnect the power supply.
In the terminal board of the motor or in the electric control
panel, exchange the position of two of the three wires of the
supply cable.

Precautions

WARNING:

For the wiring diagrams, see

Figure 24

Check the direction of rotation again.

• Make sure that the drained liquid does not cause dam-

age or injuries.

5.3 Start the pump

• The motor protectors can cause the motor to restart un-

expectedly. This could result in serious injury.

• Never operate the pump without the coupling guard

correctly installed.