Electrical Requirements; Install The Pump; Mechanical Installation - Xylem LOWARA ESH ATEX Manuel D'installation, D'utilisation Et Entretien

en - Original instructions
WARNING:
Do not use the on-off valve on the
discharge side in the closed position
in order to throttle the pump for more
than a few seconds. If the pump must
operate with the discharge side
closed for more than a few seconds, a
bypass circuit must be installed to
prevent overheating of the liquid
inside the pump.
For illustrations that show the piping
requirements, see Figure 13 and Figure 14.
4.3

Electrical requirements

•
The local regulations in force overrule
these specified requirements.
Electrical connection check list
Check that the following requirements are met:
•
The electrical leads are protected from
high temperature, vibrations, and
collisions.
•
The power supply line is provided with:
– A short-circuit protection device
– A mains isolator switch with a
contact gap of at least 3 mm.
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of
the pump unit. Improper combinations could
fail to guarantee the protection of the motor.
•
Devices must be installed to protect the
motor from overloads: thermal protection
or thermal overload relay with trip class
10 A + aM fuses (motor start-up), or
motor protection thermal magnetic switch
with start class 10 A.
•
Short-circuit protection must be installed:
aM fuses (motor start-up), or thermal
magnetic switch with C curve and Icn ≥
4.5 kA, or other similar device.
•
According to ISO/IEC 80079-37 (clause
6), safety loop shall be as minimum SIL 1:
equip the electric panel with a dry-running
protection system to which a pressure
switch, a float, probes or other suitable
devices must be connected.
•
The following devices are recommended
for use on the suction side of the pump:
– 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.
26
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/EC-ATEX 137 regarding
the safety and health of personnel
who may be exposed to the risk of
explosive atmospheres.
•
All motors, which are
supplied with pump or
mounted by the
customer's after-sales
service, must have an
axially locked bearing on
the right side.
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.
Refer to the motor manual for power supply
tolerances and electrical connections.
4.4

Install the pump

4.4.1

Mechanical installation

Check the following before installation:
•
The mounting surface must have set and
must be completely horizontal and even.
•
Observe the weights indicated.
Install the pump
For examples of horizontal installations, see
Figure 15.
Check that the foundation has been prepared in
accordance with the dimensions given in the
outline drawing/general arrangement drawing.
For information about the pump base and
anchor holes, see Figure 16.
1. Position the pump set on the foundation
and level it with the help of a spirit level
that is placed on the discharge port.
The permissible deviation is 0.2 mm/m.
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. Use shims for height compensation, if
necessary.
Always fit shims, if any, immediately to the
left and right of the foundation bolts
between the baseplate/foundation. For a
bolt-to-bolt distance (L) > 800 mm, fit extra
shims halfway between the bolt holes.
6. Make sure that all shims lie perfectly flush.
7. Insert the foundation bolts into the holes
provided.