GEA Explosion Protected Bag Filter Multisack G85 EX
Operation Manual
1
PR-2009-0117-GB • Subject to modifications • Status 09/2009
Proper use of the GEA explosion protected bag filters Multisack G85 EX stipulates compliance
with the current operation manual. This manual must always be available at the site where the
unit is in operation. Every person working on or with the GEA explosion protected bag filters of
series Multisack G85 EX must read and understand this operation manual fully.
1. Technical Data
Specifications:
Notes:
Frame material:
Galvanized metal sheet
Identification of explosion protection:II 2 GD IIB T6
Filter medium:
Micro glass fibre
(-40°C to +°80)
Max. operating temperature [°C]:-40 to +80
Explosion protection conformity:
RL 94/9/EG
Max. relative humidity [%]:90
Unit category 2, group II
RL 94/9/EG
Filter with grounding element
Application in zones 1, 2, 21, 22
RL 999/92/EG
2. Safety Instructions
Proper use
GEA explosion protected bag air filters of series Multisack G85 EX of the equipment category 2,
group II in accordance with the EU directive 94/9/EG on explosion risk in areas with an explosive
atmosphere or EN 13463-1:2001 are exclusively used to filter solid matter particles and dust of
any kind and size out of air in air handling systems. Filtered air can be charged with foreign mat-
ter and the relevant surroundings can be classified as an explosion risk areas in accordance with
1999/92/EG directive on explosion protection. GEA explosion protected bag air filters of series
Multisack G85 EX are exclusively suitable in explosion risk areas in zones 1, 2, 21 and 22 in
accordance with 1999/92/EG directive on explosion protection.
Further process instructions and regulations on explosion risk prevention in terms of 1999/92/
EG directive as well as other usually applied directives on using, handling, maintenance and
recycling of air filters for air handling units SWKI 2003 as well as VDI 6022 must be taken into
account.
Label
The supplied label must be attached on the external side of a service door of an air handling unit.
The label must be clearly visible and accessible.
GEA explosion protected bag filters of series Multisack G85 EX are installed in air handling units
that are classified as explosion risk areas according to 1999/92/EG and 94/9/EG directives on
explosion risk protection. The Multisack G85 is not suitable for explosion risk areas where hybrid
mixtures lead to explosion hazards.
Possible electrostatic charges of the GEA explosion risk protected bag filters of the series
Multisack G85 EX are continuously diverted without special structural changes or technical
measures if the following conditions are met:
–
The air filter frame must always have an electrically conductive connection with the relevant
filter retainer. For this purpose - an additionally supplied grounding set must be mounted and
secured. This grounding set must be mounted in such a way that self-removal or accidental
removal because external influence is prevented (
➠
refer to section „3. Installation“).
–
The filter retainer as well as all electrically conductive components of an air handling unit
must be grounded. This can be achieved by using conductive contact surfaces between
components (direct contact) or an electrical conductor (e.g. grounding cable).
Air flow velocity and rated air
flow rate
Air flow velocity through filter may not exceed 10 m/s and rated air flow rate specified in the
technical data may not be exceeded under any circumstances.
In case of proper use of the GEA explosion protected bag filters at specified rated air flow rate
the air flow velocity through filter medium will not exceed 0,5 m/s even if the filter has reached
the intended operating life or compulsory maximum end pressure difference. The standard value
for dimensioning is specific maximum air flow rate 0,3 m³/s per m² of filter surface. It must always
be possible to check the maximum rated flow rate (
➠
refer to section „1. Technical Data“) of the
unit by using check and monitoring devices (e.g. differential pressure monitor or flow measuring
devices).
Type/designation
Dimensions
W x H x D
[mm]
Number of
bags
[quantity]
Filter surface
[m²]
Max. rated air flow rate
[m³/h]
Bag filter G85 EX
592 x 592 x 600
8
2.6
4,250
Filter class
Norm
Initial pressure
difference
[Pa]
Max. end pres-
sure difference
[Pa]
Air flow velocity
[m³/h]
Order
number
F7
EN 779
91.7
450
3,400
10 42 646
