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2
Safety instructions
Target group:
For skilled electricians and suitable qualified, instructed
personnel in accordance with national legislation, including
the relevant standards and, where applicable, in acc. with
IEC/EN 60079-14 on electrical apparatus for explosive atmospheres.
The installation switches are not suitable for Zone 0 and Zone 20
hazardous areas.
The temperature class and explosion group marked on the installa-
tion switches shall be observed.
They shall be used for their intended purpose and in perfect and
clean condition.
The requirements of the IEC/EN 60079-31 regarding excessive dust
deposits and temperature to be considered from the user.
Prior to taking the installation switches
into operation, they shall be checked in accordance with the
instruction as per section 6.
Observe the national safety rules and regulations for prevention of
accidents as well as the safety instructions included in these
operating instructions and set in italics the same as this text!
3
Conformity with standards
The apparatus are conform to the standards specified in the EC-Declara-
tion of conformity, enclosed separately.
References to standards and directives in these operating instructions
always relate to the latest version. Other additions (e.g. details relating to
the year) shall be observed.
4
Field of application
The installation switches are suitable for use in Zones 1 and 2 as well as
in Zones 21 and 22 hazardous areas acc. to IEC/EN 60079-10-1 and
IEC/EN 60079-10-2!
The enclosure materials employed, including the exterior metal parts, are
made of high-quality materials which ensure a corrosion protection and
resistance to chemical substances corresponding to the requirements in a
"normal industrial atmosphere":
– impact resistant polyamide
– special steel AISI 316 L
In case of use in an extremely aggressive atmosphere, please refer to
manufacturer.
8
Explosions protected installation switches
type GHG 273
5
The installation switches are designed for switching on and off light
circuits in hazardous areas up to 16 A (see technical data).
The temperature class, explosion group and permissible ambient temperature,
see technical data.
The switch rocker is provided with a luminescent label in acc. with § 7 of
the Workshop regulations and free from any radioactive additives.
The data as per point 3 and 4 shall be taken into account with the
use.
Applications other than described are not permitted without Cooper
Crouse Hinds (CCH) / EATON`s prior written consent.
For the operation, the instructions stated in section 7 of the
operating instructions shall be observed.
The user alone is responsible for the appropriate use of this
installation switch in consideration of the basic conditions existing
at the plant (see technical data).
6
For the mounting and operation, the respective national regulations (e. g.
Betr.Si.V., equipment safety law for Germany) as well as the general rules
of engineering shall be observed
(IEC/EN 60079-14).
The improper installation and operation of switches may result in
the invalidation of the guarantee.
6.1
The installation switches can be mounted without opening their
enclosure.
In case the switches are mounted directly onto the wall, they may rest
evenly only at the respec tive fastening points. The chosen screw shall
match the fastening hole (see dimensional drawing) and it must not
damage the hole (e. g. use of a washer).
The device shall be fastened diagonally with at least 2 screws.
If the screws are overtightened, the apparatus can be damaged.
Use / Properties
Installation
Mounting
GB
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