Commissioning, Startup, Operation, And Shutdown; Install The Pump; Install The Pump On A Concrete Foundation; Electrical Installation - Lowara e-SV 1 Manual De Instalación, Uso Y Mantenimiento

Electrical control panel check-list
NOTICE:
The control panel must match the ratings of the pump unit. Improper
combinations could fail to guarantee the protection of the motor.
Check that the following requirements are met:
The control panel must protect the motor against overload and short
•
circuit.
Install the correct overload protection (thermal relay or motor
•
protector). Thermal and short circuit protection, must be supplied by
the installer.
It is the user's responsibility to ensure the equipment does not run
•
dry. Any control system used to achieve this must comply with the
relevant requirements of EN 80079-36.
Install a protection system against dry running to which a pressure
•
switch, or a float switch, probes or other suitable devices must be
connected in accordance with ISO/IEC 80079-37 (clause 6); safety
loop shall be as minimum SIL 1.
When the liquid is pumped from a water system, use a pressure
•
switch.
When the liquid is pumped from a storage tank or reservoir, use a
•
float switch or probes.
When thermal relays are used, relays that are sensitive to phase
•
failure are recommended.
Motor check-list
WARNING:
Make sure that the control panel and any control devices
are suitable for installation in the selected location. The
regulation in force is the Directive 1999/92/ECATEX 137
regarding the safety and health of personnel who may be
exposed to the risk of explosive atmospheres.
NOTICE:
• Only use dynamically balanced motors with a half-sized key in
the shaft extension (IEC 60034-14) and with normal vibration rate
(N).
• The mains voltage and frequency must agree with the
specifications on the data plate.
• Only use three-phase motors whose size and power comply with
the European standards.
Refer to the motor manual for power supply tolerances and electrical
connections.

4.3 Install the pump

4.3.1. Install the pump on a concrete foundation

For information about the pump base and anchor holes, see
1. Put the pump onto the concrete foundation or equivalent metal
structure.
To avoid vibrations, provide vibration-damping supports between
the pump and the foundation.
2. Remove the plugs covering the ports.
3. Align the pump and piping flanges on both sides of the pump.
Check the alignment of the bolts.
4. Fasten the piping with bolts to the pump.
Do not force the piping into place.
5. Anchor the pump securely with bolts to the concrete foundation or
metal structure.

4.3.2. 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 the wiring diagrams, refer to the manual with the instructions
for installation and operation of the motor.
a) Connect the earth (ground) lead.
Make sure that the earth (ground) lead is longer than the
phase leads.
b) Connect the phase leads.
4. Replace 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, 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, Startup,
Operation, and Shutdown
Precautions
WARNING:
•
•
•
ATTENTION:
•
•
NOTICE:
• Never operate the pump below the minimum rated flow, when
dry, or without prime.
• 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
Figure 9.
the internal components.
• If a liquid is pumped at a high temperature, a minimum pressure
must be guaranteed on the suction side to prevent cavitation.
• To prevent overheating of the internal pump-components, make
sure that a minimum liquid flow is always guaranteed when the
pump is running. The running time under these conditions must
not exceed a few seconds. If minimum water flow cannot be
achieved, then a bypass or recirculate line is recommended.
Refer to the minimal nominal flow rate values given in the
Appendix.
Noise level
For information about noise levels emitted by units, see Installing and
Operating Instructions manual of the Motor.

5.1 Prime the pump

WARNING:
To 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.
Installations with liquid level above the pump
(suction head)
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.
Never operate the pump without the coupling guard
correctly installed.
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.
en - Original instructions
17