Cooper Crouse-Hinds GmbH
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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.
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.
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. ElexV,
VDE 0105, Part 9 in Germany).
Prior to opening the enclosure, it is
necessary to ensure that the voltage supply
has been isolated or to take suitable
protective measures.
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).
Special attention shall be given to the safe
functioning of the cover interlock and the
perfect condition of the locking device.
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
Modifications
Modifications
Modifications
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.
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.
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.
Explosion-protected safety switches for variable
frequency drives, 20A - 180A
The unused entry hole of the double cable
end box is to be closed with a sealing sleeve,
item 5 (order No. GHG 740 1933 R0003).
Attention: In order to ensure that the
required minimum protection category is
maintained, it is necessary ensure that the
seal, item 6, is in the correct position.
When using cable entries with a lower IP
protection than that which applies to the
device (see technical data, page 9 and 10),
the IP protection of the complete unit is
reduced.
Intrinsically safe circuits shall be fed through
cable entries that are colour-coded (light blue).
In order to ensure the minimum degree of
protection, any unused entry holes shall be
sealed with certified blanking plugs.
When fitting cable entries, care has to be
taken that the sealing inserts are suitable for
the cable diameter.
In the case of sealing inserts that have to be cut
to size, it is necessary to ensure that the insert
is properly adapted to the cable diameter.
When using cable entries for fixed cables it is
necessary to ensure that no inadmissible high
mechanical stress is applied to the cable entry
or its seal.
In order to ensure the required minimum
degree of protection, the cable entries shall be
tightened down securely.
Overtightening can impair the degree of
protection.
Warning: When tightening the cap nut of
the metal cable entry (e.g. type E1WF/e),a
suitable tool shall be used to safeguard the
gland against twisting.
Any unused metric CCH / CEAG cable
entries shall be sealed with the blanking plug
certified for these metric cable entries.
6.4
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.
10).
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
*
not yet certified for category II D
Fig. 10
External earth connection
Inner wall of
the enclosure
Internal
earth plate
Internal earth
connection
