Eaton Crouse-hinds series Manual Download

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6.3 Cable entries (KLE); blanking plugs

Generally only certified cable entries and blanking plugs may be

used.

Flexible cables shall be used with trumpet-shaped cable glands or
other suitable entries with additional pull relief.

When using cable entries with a degree of protection that is lower than
the IP protection of the apparatus (see technical datas), the degree of IP
protection for the complete unit is reduced.

The relevant mounting directives for cables entries being used

shall be observed.

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 are
cut out, it is necessary to ensure that the insert is properly adapted to the
cable diameter.

In order to ensure the required minimum degree of protection, the cable
entries shall be tightened down securely (see technical data).

Overtightening can impair the degree of protection.

When tightening the cap nut of the metal cable entry (e.g. type ADL/
ADE),a suitable tool shall be used to safeguard the gland against
twisting.

Any unused metric CEAG cable entries shall be sealed with the blanking
plug certified for these metric cable entries.

6.4 Metal plates and external earth connection

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. 4). The standard terminals are designed for the direct
connection of conductors with copper wires.

Metal plates and metal glands shall be incorporated in the

potential equalization.

6.5 Closing apparatus

Any foreign matter shall be removed from the apparatus.

The switch handle on the cover of the safety 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 (see technical data).

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 switches GHG 261 may result in the

invalidation of the guarantee.

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.

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 flame-
proof 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.

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, replace-

ment of these components is mandatory. In case of doubt, the
respective apparatus shall be sent to COOPER Crouse-Hinds for
repair.

Repairs that affect the explosion protection may only be carried out
by COOPER Crouse-Hinds or by a qualified electrician in compliance
with the respective national regulations (IEC/EN 60079-19).

Modifications or changes to the safety switches are not permitted.

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.

External earth connection

Inner wall of

the enclosure

Fig. 4

Internal

earth plate

Internal earth