Technical Data - Xylem Lowara e-LNE Série Manuel D'installation, D'exploitation Et De Maintenance

en - Original instructions
7.11 The mechanical seal is leaking
Cause
Worn mechanical seal
Mechanical seal damaged
due to thermal shock
(presence of air bubbles in
the pump unit)
Defective mechanical seal
Mechanical seal damaged
due to temperature of the
liquid outside the rated
limits
Mechanical seal damaged
due to chemical
incompatibility with the
liquid
7.12 The motor becomes excessively hot
Cause
Room temperature outside the
rated limits
Cooling fan of the motor
clogged or damaged
The pump unit starts up too
frequently
The frequency converter, if
present, has not been calibrated
properly
7.13 The frequency converter (if present)
is in error mode or turned off
Cause
See the frequency
converter manual
8

Technical Data

8.1 Operating environment
Non-aggressive and non-explosive atmosphere.
Temperature
From 0°C (+32°F) to +40°C (104°F).
Relative air humidity
< 50% at +40°C (104°F).
Elevation
26
Remedy
 Replace the
mechanical seal, or
 Fit a mechanical seal
with harder contact
surfaces
Replace the mechanical
seal
Replace the mechanical
seal
Replace the mechanical
seal with another of a
suitable make
Replace the mechanical
seal with one of a make
chemically compatible
with the pumped liquid
Remedy
Lower the room
temperature
Clean or replace the
cooling fan
See Par. 7.8
See the frequency
converter manual
Remedy
See the frequency
converter manual
< 1000 m (3280 ft) above sea level.
NOTICE:
 If the temperature and humidity exceed the
stated limits, contact Xylem or the
Authorised Distributor
 If the pump unit is installed at an altitude
greater than the stated one, reduce the
power output of the motor (see Tab. 20) or
replace it with an oversized one.
8.2 Liquid temperature
The pressure-temperature diagram in Fig. 19 shows
the operating limits of the pump unit. Contact Xylem or
the Authorised Distributor for special needs.
8.3 Operating pressure
See Fig. 19 for the maximum operating pressure of
the model of pump unit and the temperature of the
pumped liquid:
≤ PN
P +P
1max max
P = Maximum inlet pressure
1max
P = Maximum pressure generated by the pump
max
PN = Maximum operating pressure
8.4 Maximum hourly start-ups
Pump unit rated
power [kW]
No. of start-ups at
regular intervals per
h
8.5 Protection class
IP 55.
8.6 Electrical specifications
See the motor data plate.
8.7 Permitted tolerances for the supply
voltage
Frequency Phase ~
[Hz]
50 1
3
60 1
3
0.25 4.00 11 18.5 30 45
÷ ÷ ÷ ÷ ÷
3.00 7.50 15 22 37 75
60 40 30 24 16 8
UN [V] ± % No. of
conductors
220-240 ± 6 3 (2 +
Ground)
230/400 ± 10 4 (3 +
Ground)
400/690 ± 10
220-230 ± 6 3 (2 +
Ground)
220/380 ± 5 4 (3 +
Ground)
380/660 ± 10
90
÷ ÷
160
4