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Fastening holes of apparatus mounting
plates size 2
Apparatus mounting plate for trellis and wall
mounting
Fastening
holes for
control unit
D22 432
Apparatus mounting plate for pipe mounting
Explosion-protected control units D22 43.
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 COOPER CROUSE-
HINDS / CEAG cable entries shall be sealed
with the blanking plug certified for these
metric cable entries.
6.4
Flange and metal plates *
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. the maximum terminal cross
section is 6 mm².
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
*
1
not yet certified for category II D
6.5
Closing apparatus /
Cover closure
When fitting the enclosure cover onto the
base, it is necessary to ensure that the
actuator elements correspond correctly
with the built-in components and that the
enclosure cover for the respective base is
being used.
Any foreign matter shall be removed from the
apparatus.
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 of the built-in components
(measuring instruments, signal lamps,
pushbuttons, etc.) 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.
1
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.
The improper operation of control units
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 (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.
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.
Cooper Crouse-Hinds GmbH
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