Fig. 6
Apparatus holder, size 3 for pipe mounting, horizontally
Screwed fastening holes for terminal boxes GHG 721 1....
Fig. 7
Apparatus holder, size 3 for channel- and wall mounting, horizontally
Clamp fastening holes for terminal boxes GHG 721 1....
12
Explosion protected terminal boxes type, GHG 72.
C
C
7
Maintenance / Servicing
a
The relevant national regulations which
apply to the maintenance/repair of electrical
apparatus in explosive atmospheres, will
have to be observed (IEC/EN 60079-17).
Before opening the enclosure make sure
that the terminal box is disconnected from
the voltage, or take the appropriate
protective measures.
In case of intrinsically safe circuits, working is
permitted while voltage applies.
The required maintenance intervals depend
on the specific application and will therefore
have to be determined by the user dependent
on the conditions of use.
When servicing the apparatus, particularly
those parts that are decisive for the type of
protection against explosion, will have to be
checked (e.g. intactness and tightness of the
enclosure, efficacy of the gaskets and the
cable entries).
Before closing the enclosure cover, pay
attention to the correct position and intact-
ness of the holding-down clamps (see fig. 2,
page 10).
Grey or painted plastic terminal boxes shall
only be cleaned with a damp cloth.
If during servicing, repairs prove to be
necessary, section 8 of these operating
instructions will have to be observed.
8
Repairs / Overhaul /
Modifications
Overhaul and repairs may only be carried out
with genuine CEAG / CCH spare parts.
a
Repairs that affect the explosion
protection, may only be carried out by CEAG
/ CCH or a qualified electrician in compliance
with the applicable national rules (IEC/EN
60079-19).
Modifications to the apparatus or changes of
its design are not permitted, except for the
mounting of additional cable entries and the
installation of supply terminals in accordance
with the approval of the apparatus.
9
Disposal / Recycling
When the apparatus is disposed of, the
respective national regulations on waste
disposal will have to be observed. In order
to facilitate the recycling of individual
components, plastic parts are provided
with the identification mark of the plastic
material used.
Subject to modifications or supplement of
the product range.
E