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4. Installation
The safety of this light fitting is only guaranteed as long as it is operated within its
!
assessment threshold. Installation and maintenance must be done in accordance with
the respective regulations!
The installation of explosion-proof light fittings must be done by Ex-skilled electricians
only!
In regard to the minimum and maximum admissible ambient temperature potential
sources of cold and heat (e.g. direct heat or solar radiation, cooling units) have to be
considered!
If there is a risk of accidental electrostatic charge the light fitting must be protected by
appropriate measures!
The application of this light fitting in an explosive dust atmosphere is depending on the
properties of the surrounding dust. Please ensure that there will be an adequate
difference between the maximum surface temperature of the fitting and the glowing and
the ignition temperature of the respective dust!
Applying an explosion-proof breathing gland for pressure compensation is not allowed!
4.1 How to open the light fitting
The light fitting may only be opened if it has been disconnected from the mains supply
completely!
!
It is allowed to open the light fitting in a non-explosive (non hazardous) atmosphere
only!
Please ensure that the LED are protected against mechanical and electrostatic attacks
whenever the light fitting is open. For this reason the LED must not be touched either!
Loosen the two captive screws out of the diffuser.
Lift the diffuser from the housing.
4.2 Electrical connection
The filling level of the connection cable should be quite high for avoiding any air
!
penetrating the inside of the light fitting through the cable!
The Test port for restricted breathing (Ex cable gland with closing plug, see
illustration in section 3, Technical Data), must not be used for cable entry in any
case!
After mounting the light fitting housing insert the connection cable through the Ex cable gland. An
inlaid dust protective disc, if existing, must be removed before.
Fasten the pressing screw of the Ex cable gland (Torque see section 3, Technical Data).
Outside the light fitting appropriate measures (e.g. pull relief clips) must be taken to
!
protect the connection cable from twist and it must be ensured that no tensile forces react
on the wiring and the Ex cable gland!
The diameter of the connection cable must correspond to the sealing range of the Ex
cable gland (see section 3, Technical Data)!
Ex cable glands, which are not used, must be closed with the enclosed closing plug (see
section 3, Technical Data)! An inlaid dust protective disc, if existing, must be removed
before.
The conductors must not be damaged when skinning resp. stripping the cable!
When stripping the cable special attention needs to be paid to the correct length of the
conductor end sections (see section 3, Technical Data)!
10/2022
L-01510-4-09
•
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