Plastic*-Metal Flanges, Metal Plates And External Earth Connection; Closing Apparatus; Putting Into Operation; Maintenance / Servicing - Eaton CROUSE-HINDS Série Mode D'emploi

6.4 Plastic*-metal flanges,
metal plates and
external earth connection
If flange plates have to be dismantled, (e.g.
to drill entry holes), when replacing the plates,
in order to maintain the minimum degree of
protection, it is necessary to ensure that the
flange plate and the fixing clamp fit correctly.
PE conductors fed from outside shall be
connected to the PE terminal provided on
the flange.
In case an external earth connection is
mounted on the plastic enclosure, it should be
connected with a max. 25mm² wire.
This earth connection is inserted through a M6
drill in the inner wall of the enclosure (see fig.
5, page 2).
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
* not yet certified for category II D
6.5

Closing apparatus

Any foreign matter shall be removed from
the apparatus.
The switch handle on the cover of the switch is
to be set to the "ON" position.
When fitting the apparatus cover, care shall
be taken to ensure that the switch shaft of
the switch insert engages correctly in the
carrier hole of the switch handle.
To ensure the required minimum degree of
protection, the cover screws shall be tightened
down.
Overtightening may impair the degree of
protection.
6.6

Putting into operation

Before putting the apparatus into operation,
the tests specified in the individual national
regulations shall be performed.
In addition to this, before being put into
operation, the correct functioning of the
apparatus and installation of the apparatus shall
be checked in accordance with these operating
instructions and other applicable regulations.
The improper operation of safety switches
may result in the invalidation of the
guarantee.
14
Explosion-protected safety switch 20 A - 180 A
7

Maintenance / Servicing

The valid national regulations for the
servicing / maintenance of electrical
apparatus for use in potentially explosive
atmospheres shall be observed
(e.g. IEC/EN 60079-17).
Prior to opening the enclosure, it is
necessary to ensure that the voltage supply
has been isolated or to take suitable
protective measures.
Safety switches with auxiliary contacts in the
gold-tipped auxiliary contact edition should be
activated occasionally depending on service
conditions.
The necessary intervals between servicing
depend upon the specific application and shall
be stipulated by the operator according to the
respective operating conditions.
During servicing, special attention shall be
given to checking the parts on which the
explosion protection depends (e.g. intactness
of the flameproof components, the enclosure,
the seals and cable entries).
If, in the course of servicing, it is ascertained,
that repairs are necessary, section 8 of these
operating instructions shall be observed.
8

Repairs / Overhaul /

Modifications

Only original Cooper Crouse-Hinds parts shall
be used for carrying out repairs.
In the event of damage to the flameproof
encapsulation, replacement of these
compo nents is mandatory. In case of doubt,
the respective apparatus shall be sent to
COOPER CROUSE-HINDS GmbH for repair.
Repairs that affect the explosion protection
may only be carried out by COOPER
CROUSE-HINDS GmbH or by a qualified
electrician in compliance with the respective
national regulations (e.g. IEC/EN 60079-19).
Apparatus modifications or design changes are
not permitted; excepted from this is the fitting
of additional cable entries within the scope of
the apparatus approvals.
EATON's Crouse-Hinds Business
9

Disposal / Recycling

The respective valid national regulations for
waste disposal shall be observed when
disposing of apparatus.
To facilitate the recycling of individual parts,
parts made of moulded plastic shall bear the
marking for the type of plastic used.
The product range is subject to changes and
additions.
E