Electrical Installation; Commissioning, Startup, Operation, And Shutdown - Xylem LOWARA ESH ATEX Manuel D'installation, D'utilisation Et Entretien

en - Original instructions
Install the coupling guard
ATTENTION:
Never operate the pump without the
coupling guard correctly installed.
'Metal sheet' type
For information see Figure 17.
1. Open and place the guard (1) in a way that it
envelops the bearing cover and the
supporting/adjusting ring (3).
2. Press the supporting/adjusting ring (3)
axially to the motor.
3. Screw the fixing devices (2).
4.4.4

Electrical installation

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 fasten 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
below.
– 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,
set the value to the operating current
(current 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, Start-
up, Operation, and
Shutdown
Precautions
WARNING:
• Make sure that the drained liquid
cannot cause damage to persons,
property or the environment.
• The motor protectors can cause
the motor to restart unexpectedly.
This could result in serious injury.
28
• Never operate the pump without
the coupling guard correctly
installed.
ATTENTION:
• The outer surfaces of the pump
and motor can exceed 40ºC
(104ºF) during operation. Do not
touch with any part of the body
without protective gear.
• Do not put any combustible
material near the pump.
NOTICE:
• It is prohibited to operate the unit when dry,
not primed and below the minimum rated
flow rate; check the data plate.
• 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 (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
WARNING:
Opening of equipment through the
plugs is possible only under non-
active conditions or if it is
unavoidable, during priming phase,
necessary precautions must be taken
into account.
For information about additional pump
connections, see Figure 19.
Installations with liquid level above the
pump (suction head)
For an illustration that shows where pump plugs
are, see Figure 20.
1. Close the on-off valve located
downstream from the pump.
2. Remove the fill (3) or gauge plug (1) and
open the on/off valve upstream until the
liquid flows out of the hole.
3. Close the fill (3) or gauge plug (1).