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Les langues disponibles
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2
Fig. 1
Contact arrangements
Pushbutton
Double pushbutton
Mushroom-head pushbutton
Mushroom-head pushbutton with key
Key-operated pushbutton
Potentiometer
Control switch Ex 41 R6201
Control switch Ex 41 R6102
Control switch Ex 41 R6002
Control switch Ex 41 R5307
Control switch Ex 41 R5507
Control switch Ex 41 R8701
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12
12
12
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Cooper Crouse-Hinds GmbH
Explosion-protected control units D22 43.
2
Safety instructions
The operations must be carried
out by electrical suitably trained
in hazardous area with
knowledge of increased safty
explosion protection
IEC 60079-14.
The control units D22 432 and D22 434.
are not suited for use in Zones 0, 1, 2 and
Zones 20, 21.
The requirements of the EN 61241-0 and -1
regarding excessive dust deposits and
temperature to be considered from the
user.
The temperature class and type of
protection stated on the apparatus shall
be observed.
Modifications or changes to the control
units are not permitted.
They shall be used for their intended
purpose and shall be in a perfect and
clean state.
Only original COOPER CROUSE-HINDS /
CEAG parts may be used as replacements
and for repairs.
Repairs that affect the explosion
protection may only be carried out by
COOPER CROUSE-HINDS / CEAG or by a
qualified electrician in compliance with
the respective national regulations.
Prior to being put into operation, the
control units shall be checked in
accordance with the instructions as per
section 6.
Before initial operation, any foreign
matter shall be removed from the
apparatus.
The national safety rules and regulations
for the prevention of accidents, as well as
the safety instructions included in these
operating instructions, that, like this text,
are set in italics, shall be observed!
3
Conformity with standards
The apparat is conform to the standards
specified in the EC-Declaration of conformity.
It has been designed, manufactured and
tested according to the state of the art and to
DIN EN ISO 9001.
94/9 EC: Equipment and protective systems
intendet for use in potentially explosive
atmospheres.
The control units fulfil further requirements
such as those of the EC directive on
electromagnetic compatibility (2004/108/EG).
4
Field of application
The control units are intended for use in
potentially dust explosive atmospheres in
zone 22 in accordance with EN 61241-0.
The enclosure materials used, including any
external metal parts, are high quality materials
that ensure a corrosion resistance and
resistance to chemical substances according
to the requirements for use in a "normal
industrial atmosphere"
- impact resistant polyamide
- special steel AISI 316 L.
In case of use in an extremely aggresive
atmosphere, please refer to manufacturer.
5
Application / Properties
The control units D22 432 and 434 are
intended for the local control of electrical
installations in potentially explosive
atmospheres. The units are fitted with built-in
components according to the respective
application.
The version with gold-tipped contacts is
suited for switching extra-low voltage circuits.
Special attention shall be paid to the
maximum current load (see technical data,
pages 9 and 10). The contact chamber of the
gold-tipped version is marked with the letter
"G" or colour-coded.
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