7
Maintenance / Servicing
The relevant national regulations which
apply to the maintenance/repair of
electrical apparatus in explosive
atmospheres, will have to be observed
(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
intactness of the holding-down clamps (see
fig. 2, page 12).
If during servicing, repairs prove to be
necessary, section 8 of these operating
instructions will have to be observed.
8 8 8 8 8
Repairs / Overhaul /
Repairs / Overhaul /
Repairs / Overhaul /
Repairs / Overhaul /
Repairs / Overhaul /
Modifications
Modifications
Modifications
Modifications
Modifications
Overhaul and repairs may only be carried out
with genuine CEAG / CCH spare parts.
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 (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.
14
14
14
14
14
Cooper Crouse-Hinds GmbH
Explosion protected terminal boxes made of plastic or
stainless steel type GHG 72.
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....
C
C