Connect Power Supply; Commissioning, Startup, Operation, And Shutdown - Xylem LOWARA ESHS Manuel D'installation

ATTENTION:
Welding beads,
impurities in the piping damage the
pump.
•
Free the piping from any impurities.
•
If necessary, install a filter.
4.3.3

Connect power supply

1. If it is necessary to turn the motor to change the
position of the terminal board, contact Xylem or
the Authorised Distributor.
2. Remove the screws of the terminal box cover.
3. Connect and install the power cables according
to the applicable wiring diagram. For wiring
diagrams, see the Installation, Operating, and
maintenance manual for the motor.
a) Connect the ground (earth) lead. Make
sure that the ground (earth) lead is longer
than the phase leads.
b) Connect the phase leads.
4. Install the terminal box cover.
NOTICE:
Tighten the cable glands carefully to ensure
protection against cable slipping and humidity
entering the terminal box.
5. If the motor is not equipped with automatic reset
thermal protection, then adjust the overload
protection according to the list.
- If the motor is used with full load, then set
the value to the nominal current value of
pump unit (data plate)
- If the motor is used with partial load, then
set the value to the operating current (for
example measured
pincer).
- If the pump has a star-delta starting
system, then adjust the thermal relay to
58% of the nominal current or operating
current (only for three-phase motors).
5 Commissioning, Startup,
Operation, and Shutdown
Precautions
WARNING:
•
Make sure that the drained
liquid cannot cause damage
to persons, property or the
environment.
•
The
cause the motor to restart
unexpectedly.
result in serious injury.
•
Never
without the coupling guard
correctly installed.
scale and other
with a current
motor protectors can
This could
operate the pump
ATTENTION:
•
The outer surfaces of the
pump and motor can exceed
40°C
operation.
Do not touch with any part of
the body without protective
gear.
•
Do not put any combustible
material near the pump.
NOTICE:
•
Never operate the pump below the
minimum rated flow, when dry, or without
priming: check the values on the data
plate.
•
Never operate the pump with the delivery
ONOFF valve closed for longer than a
few seconds.
•
Never operate the pump with the suction
ONOFF 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 (nominal
pressure PN) for the pump.
•
Do not use the pump if cavitation occurs.
Cavitation can damage the internal
components.
5.1 Fill the pump
For information about additional pump connections,
see Figure 11 on page 94.
Installations with liquid level above the pump
(suction head)
For an illustration that shows where pump plugs are,
see Figure 12 on page 95.
1. Close the on-off valve located downstream from
the pump.
2. Remove the fill plug (2) and open the on/off
valve upstream until the water flows out of the
hole.
3. Close the fill plug (2).
Installations with liquid level below the pump
(suction lift)
For an illustration that shows where pump plugs are,
see Figure 13 on page 95.
1. All pipe system empty:
a) Open the on-off valve located upstream
from the pump.
b) Remove the fill plug (2) and use a funnel to
fill the pump through the fill hole until water
flows out of this hole.
c) Tighten the fill plug (2).
en – Original instructions
(104°F) during
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