Plastic*-Metal Flanges, Metal Plates And External Earth Connection; Closing Apparatus; Putting Into Operation; Switch On - Eaton CROUSE-HINDS Serie Betriebsanleitung

Fig. 6 External earth connection
Inner wall of enclosure
Internal earth plate
Internal earth connection
Fig. 7
A
B
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. 25 mm² wire.
This earth connection is inserted through a M6 drill in the inner wall of
the enclosure (see fig. 6).
Metal flanges, metal plates and metal glands shall be incorpo-
rated in the potential equalization.
* not yet certified for category II D
Explosion-protected switch
GHG 252
6�5
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 (see technical data).
Overtightening may impair the degree of protection.
6�6
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 252 may result in the
invalidation of the guarantee.
6�6�1 Switch on
Turn switch handle clockwise to position
"I","ON", "EIN" .
Perform the rotational movement quickly.
6�6�2 Switch off
Fig. 7 A
Turn switch handle counterclockwise to position
"0","OFF", "AUS".
Perform the rotational movement quickly.
If an unusually high force, e.g. a second hand, is required, the switch
shall be isolated from the supply immediately by means of the upstream
external protective device and checked by a qualified electrician acc. to
IEC/EN 60079-19.
6�6�3 Lock out
Fig. 7 B
To prevent unauthorized switching, the explosion- protected switches can
be locked in the „OFF" position by means of 3 padlocks, (shackle
diameter of the padlocks up to 7 - 8 mm).

Closing apparatus

Putting into operation

GB
25