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Extraction arms — ERGO/Ex0 pages
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ERGO/Ex extraction arm Devices for pollution extraction
ERGO EXTRACTION ARM
HANGING VERSION
Application
The ERGO-L/Z-…Ex extraction arms are designed for capturing the dust and gases arising during technological processes,
especially in areas of explosion risk, where explosive atmosphere can occur, as a mixture of fl ammable substances in form of
dust or gases with the air.
ERGO-L/Z-…Ex extraction arms are classifi ed as devices of group II, category 2, of gaseous risk G and dust risk D.
The devices ensure high level of protection, therefore they can be applied in areas 1(G) or 21(D). Admissible temperature of the
forwarded air is +70°C.
Structure
ERGO-L/Z/Ex extraction arms consist of following assemblies:
– full-rotation swivel – stainless steel
– circular hood – stainless steel
– two pipe segments integrated by frictional joints – all elements are of stainless steel
– frictional spacers made of textolite
– gas springs of stainless steel
– shut-off damper located in the pipe segment near above the hood – stainless steel
– hose sections (joining the pipe segments) – made of polyurethane conducting electrical charges and a steel wire spiral.
Superfi cial resistance <10Ħ. Elements of steel plate, pipes and stainless profi les are made of material 1.4301 according to PN-
EN 10088, whereas screw materials, washers and rivets are of material A2 according to PN-EN ISO 7089.
All constructional elements are joined together by copper cables to conduct the electrostatic charges to the grounding instal-
lation.
ERGO-L/Z/Ex extraction arms are manufactured according to ATEX 95 (94/9/WE) Directive and have Type
Research Certifi cate No 254/CW/001/07 issued by Technical Supervision Offi ce in Poland.
II 2 G /D
