Xylem LOWARA ESH ATEX Serie Manual De Instalación, Uso Y Mantenimiento página 24

en - Original instructions
• 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:
• Have all the connections made by
qualified installers 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:
• Ground the equipment before use.
• Check that the grounding points
are at the same potential.
• Always connect the external
protective conductor to the ground
terminal before attempting to
make any 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 pump body and/or the motor
adapter are painted, then you
must ground (earth) the pump
body and/or the motor adapter.
• If the motor cable is jerked loose
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 Motor (ATEX classification)
The pump without the motor is suitable for:
•
ambient temperature between
-10°C (+14°F) and +55°C (+131°F)
•
gas temperature class of T4
(+135°C = +275°F)
•
gas explosion group of IIC
24
When you purchase a motor, check its ATEX
classification and combine it with the
classification of the pump.
Here some examples for informational
purposes only.
•
ambient temperature
– Pump: -10°C to +55°C
(+14°F to +131°F)
– Motor: 0°C to +40°C
(+32°F to +104°F)
– Pump unit: 0°C to +40°C
(+32°F to +104°F)
•
gas temperature class
Example 1:
– Pump: T4 (+135°C = +275°F)
– Motor: T4 (+135°C = +275°F)
– Pump unit: T4 (+135°C = +275°F)
Example 2:
– Pump: T4 (+135°C = +275°F)
– Motor: T6 (+85°C = +185°F)
– Pump unit: T4 (+135°C = +275°F)
•
gas explosion group
Example 1:
– Pump: IIC
– Motor: IIC
– Pump unit: IIC
Example 2:
– Pump: IIC
– Motor: IIB
– Pump unit: IIB
4.2 Facility requirements
4.2.1 Pump location
DANGER:
Make sure that the supplied equipment
is suitable for use in the classified area
(according to Directive 1999/92/EC)
and for the nature of any flammable
substances present (gas, vapor, mist).
According to Directive 1999/92/EC,
Category 2 equipment is suitable for
use in Zone 1 and 2 areas only.
This equipment is:
•
not suitable for installation in sites
where the danger of explosion is
due to the presence of explosive
dust/air atmospheres.
•
for places with a potentially
explosive atmosphere, other than
underground parts of mines and
those parts of surface installations
of such mines endangered by
firedamp and/or flammable dust.
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