Application Limits; Facility Requirements; Pump Location - Xylem Lowara e-MPV Manuel D'installation, D'exploitation Et De Maintenance

en - Original instructions

3.7 Application limits

Maximum working pressure
Figure 3 shows the maximum working pressure
depending on the pump model and the
temperature of the pumped liquid.
≤ PN
P + P
1max max
P Maximum inlet pressure
1max
P Maximum pressure generated by the
max
pump
PN Maximum operating pressure
Liquid temperature intervals
Figure 3 shows the working temperature ranges.
For special requirements, contact the sales and
service representative.
Maximum number of starts per hour
See Figure 12.
Noise level
For the sound pressure levels of pump equipped
with standard supplied motor, see
For sound pressure levels of pump without motor,
see Table 6.
4 Installation
Precautions
WARNING:
 Observe accident prevention
regulations in force.
 Use suitable equipment and
protection.
 Always refer to the local and/or
national regulations, legislation, and
codes in force regarding the
selection of the installation site,
plumbing, and power connections.
Electrical Hazard:
 Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
 Before starting work on the unit,
make sure that the unit and the
control panel are isolated from the
power supply and cannot be
energized. This applies to the
control circuit as well.
Grounding (earthing)
Electrical Hazard:

Always connect the external
protection conductor to ground
(earth) terminal before making
other electrical connections.

You must ground (earth) all
electrical equipment. This applies
to the pump equipment, the driver,
and any monitoring equipment.
Test the ground (earth) lead to
verify that it is connected correctly.

If the motor cable is jerked loose
18
Table 5.
by mistake, the ground (earth)
conductor must be the last
conductor to come loose from its
terminal. Make sure that the
ground (earth) conductor is longer
than the phase conductors. This
applies to both ends of the motor
cable.

Add additional protection against
lethal shock. Install a high-
sensitivity differential switch (30
mA) [residual current device RCD].
4.1

Facility requirements

4.1.1

Pump location

DANGER:
Do not use this unit in environments that
may contain flammable or explosive or
chemically aggressive gases or
powders.
Guidelines
Observe the following guidelines regarding the
location of the product:

Make sure that no obstructions hinder the
normal flow of the cooling air that is delivered
by the motor fan.

Make sure that the installation area is
protected from any fluid leaks, or flooding.

If possible, place the pump slightly higher
than the floor level.

The ambient temperature must be between
0°C (+32°F) and +40°C (+104°F).

Contact the Sales and Service Department if:
–
The room temperature exceeds +40°C
(+104°F).
–
The unit is located more than 1000 m
(3000 ft) above the sea level. The
motor performance may need to be de-
rated or replaced with a more powerful
motor.
–
For information about which value to
de-rate the motor with, see
Pump positions and clearance
Provide adequate light and clearance around the
pump. Make sure that it is easily accessible for
installation and maintenance operations.
Installation above liquid source (suction lift)
The theoretical maximum suction height of any
pump is 10.33m. In practice, the following affect
the suction capacity of the pump:

Temperature of the liquid

Elevation above the sea level, in an open
system

System pressure, in a closed system

Resistance of the pipes

Own intrinsic flow resistance of the pump

Height differences
The following equation is used to calculate the
maximum height above the liquid level which the
pump can be installed:
Table 7.