Flange And Metal Plates; Closing Apparatus; Putting Into Operation; Maintenance / Servicing - Eaton Crouse-Hinds Série Mode D'emploi

Fig. 2
6.4 Flange* and 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. 25 mm² wire.
This earth connection is inserted through a M6
drill in the inner wall of the enclosure
(see fig. 2).
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
* not yet certified for category II D
12
Control switch, GHG 292 and control switch with
measuring instrument, GHG 293
6.5

Closing apparatus

Any foreign matter shall be removed from
the apparatus.
Inner wall of
enclosure
The switch handle on the cover of the manual
motor starter shall be in the position it had
when the apparatus was opened.
Internal
earth plate
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.
Internal
earth
Overtightening may impair the degree of
connection
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 zero setting of the measuring instrument
needle shall be checked before putting it into
operation. If necessary, the measuring
instrument needle shall be set to zero using the
adjustment screw.
The gas group (IIB or IIC) of the intrinsically safe
circuit shall be taken into consideration for the
evaluation of the gas group of the built-in
components.
If intrinsically safe circuits are switched or
fed in the control switches, the limiting
electrical values that are decisive for the
"Intrinsic Safety" shall be observed.
The improper operation of control switches
may result in the invalidation of the
guarantee.
7

Maintenance / Servicing

The valid national regulations for the
servicing / maintenance of electrical
apparatus for use in potentially
explosive atmospheres shall be observed
(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.
Working with live circuits is permissible for
intrinsically safe circuits.
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, above all, the parts on which
the explosion protection depend, (e.g.
intactness of the flameproof components, the
enclosure, the seals and cable entries), and the
switch mechanism function of the control
switch shall be checked.
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 CCH / CEAG parts shall be used
for carrying out repairs.
In the event of damage to the flameproof
encapsulation, replacement of these
components is mandatory. In case of doubt,
the respective apparatus shall be sent to
CCH / CEAG for repair.
Repairs that affect the explosion protection
may only be carried out by CCH / CEAG or
by a qualified electrician in compliance with
the respective national regulations.
(IEC/EN 60079-19)
Apparatus modifications or design changes are
not permitted; excepted from this are the fitting
of additional cable entries within the scope of
the apparatus approvals and the adjustment of
the locking position in accordance with
separate conversion instructions (obtainable
from manufacturer).
9

Disposal / Recycling

The respective valid national regulations for
waste disposal shall be observed when
disposing of apparatus.
To facilitate 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