Elektror HRD ATEX Série Instructions De Service Et De Montage page 15

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Operating and assembly instructions HRD ATEX
Installation type D
Fan is connected on the intake and pressure side
Sealed fan
A diff erent zone is permit-
ted inside and outside the
fan
Temperature classes:
Units according to Directive 2014/34/EC are classifi ed into
classes of max. permissible surface temperatures (tempera-
ture classes). Information regarding the temperature class
is on the nameplates of the units. The highest permissible
surface temperature class indicated is applicable only if the
product is used for its designated purpose.
Labelling examples:
II 2G Ex h IIB T4 Gb
II 3D Ex h IIIC T135°C Dc
II 3G Ex h IIB T4 Gc
II 3D Ex h IIIC T135°C Dc
The complete fan has a motor and fan rating plate.
The ATEX marking on the fan rating plate applies to the
complete fan.
Example
Fan
Tempera-
T3
ture class
Equipment
3G
category
Leading marking
for the complete fan: T3
3G
Special applications and application conditions can increase
the hazard potential and must therefore be communicated to
and co-ordinated in advance with Elektror.
1.2 Normal installation positions
• The fans are only approved for installation indoors.
Outdoor installation is only permitted with suitable
weather protection for the complete fan.
• Ensure that the installation situation does not aff ect the
ventilation system of the drive motor.
Minimum distance to the blower cover (for the intake of
cooling air)
Drive power
≤ 1.5 kW
> 1.5 kW
Secure the fan fl ange, base and console so that they lie
fl at.
The following installation positions are permitted for the
fans:
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Open fan
The same potentially explo-
sive atmosphere prevails
inside and outside the fan
Motor
T4
2GD
Minimum distance
to the blower cover
[mm] [inches]
34 1.34
53 2.09
Installation position with a horizontal motor shaft:
with base
Up to and including:
no restriction
Temperature and ambient conditions
max. temperature min. temperature
Flow medium
temperature at the +40°C
intake
Ambient tempera-
+40°C
ture
• Avoid aggressive ambient conditions, high air humidity or
strong temperature fl uctuations which may lead to
condensation forming on the motor/blower.
Intended use includes the following:
• Equipment categories 2G and 3G:
The fl ow medium and the area surrounding the blower
do not contain substances that may corrode the materials,
such as acids, alkaline or caustic solutions, solvents,
airborne rust, iron oxides, aggressive or abrasive gases,
liquids or solid substances. The fl ow medium is free from
substances which may settle, are adhesive or may form
condensates, and is free from foreign particles.
• Equipment categories 3D:
The fl ow medium and area surrounding the blower do not
contain a substances that may corrode the materials, such
as acids, alkaline or caustic solutions, solvents, airborne
rust, iron oxides, aggressive or abrasive gases of liquids.
The fl ow medium is free from substances that are
adhesive or may form condensates.
• Fans with motors in accordance with ignition protection
type Ex db eb are only suitable for frequency converter
operation with a rated voltage of ± 5%.
• The values for the maximum/minimum frequency can be
found at 3.3.1.
Operation in a prohibited area
Danger!
Risk of destroying the fan!
Operation of the fan in the hatched area (1) trig-
gers pumping eff ects and results in strong vibra-
tions.
This results in the fan being destroyed. Operation
of the fan is only permitted from the minimum
volumetric fl ow rate.
EN
with console
-20°C
-20°C
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