Electrical Connection; Taking Into Operation; Maintenance / Servicing; Repairs / Overhaul - Eaton CROUSE-HINDS Série Mode D'emploi

Fig. 1
Fig. 2
Fig. 3
1
2

6.2 Electrical connection

The electrical connection of the apparatus may
only be carried out by skilled staff. The circuit
diagram of the built-in components is either
shown on these components or attached to them
or shown in the operating instructions. As to
wired built-in components, the circuit diagram
attached to the device is to be observed.
If, for the sake of an easier wiring, the built-in
components (AM 72 and AM 45 measuring
instrument, push-button base, signal lamp base,
control switch base, potentiometer base etc.)
are snapped off the top hat rail fitted in the
hinged framework, the components will,
thereafter, have to be properly re-inserted in the
lock-in position on the top hat rail of the hinged
framework.
In order to snap off the components (including
measuring instruments AM 72 and AM 45), the
snap-in hooks are unlocked by pulling them
outwards.
Mind: The lock-in positions of the built-in
components shall match the notches on the
top hat rail!
In order to maintain the explosion category, the
conductors will have to be connected with
special care.
20
Explosion protected built-in components
GHG 4. and GHG 2
The insulation shall reach up to the terminal.
The conductor itself must not be damaged.
The connectible min. and max. conductor
cross-sections will have to be observed (see
technical data).
All screws and/or nuts of the supply terminals,
also of those remaining vacant, shall be
tightened down.
The fitted optional standard terminals are
designed for direct connection of conductors
with copper cores.
Switching on the axis of the Ex 23 and
Ex 29 control switch base whilst the
enclosure is open, is not permitted (in order
to be able to properly close the switch again).
On measuring instruments for c.t. connection
n/1A (fig. 3, item 2) the interchangeable scales
can be changed via a flap arranged on the upper
part of the measuring instrument (fig. 3, item 1).

6.3 Taking into operation

Prior to taking the apparatus into operation, the
tests specified in the relevant national regulati-
ons will have to be carried out. Apart from that,
the correct functioning and installation of the
apparatus in accordance with these operating
instructions and other applicable regulations will
have to be checked.
Prior to taking into operation, the zero point
adjustment of the measuring instrument index
has to be checked. Where necessary, the
measuring instrument index is to be adjusted to
the zero point by means of the adjusting screw.
Incorrect installation and use of the built-in
components can invalidate the guarantee.
7

Maintenance / Servicing

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 respective 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 of flameproof enclosed components,
enclosure, cable glands, efficacy of the cover
gaskets) and the functioning of the switch
mechanism.
If during servicing repairs prove to be necessary,
section 8 of these operating instructions will
have to be observed.
8

Repairs / Overhaul /

Modification

Repairs may only be carried out with genuine
CEAG / Cooper Crouse-Hinds spare parts.
In case of doubt, the respective apparatus will
have to be returned for repair to CEAG / Cooper
Crouse-Hinds.
Repairs that affect the explosion protection,
may only be carried out by CEAG / Cooper
Crouse-Hinds 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 or acc. to
instructions of the manufacturer.
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 have been provided
with the identification mark of the plastic
material used.
Subject to modifications or supplement of the
product range.
GB