Mounting and Installation
22
303049 / 825060300230
2022-05-30·BA00·III·en·00
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Ex d enclosure made of aluminium/flameproof enclosure
8250/0 series empty enclosure,
8250/1 series terminal box,
8250/5 series control panel/control station
6.2.4 Opening and Closing the Enclosure Cover
Opening the enclosure cover
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Loosen the cover screws on the enclosure.
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Remove the screws from the enclosure cover and store them safely.
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Carefully open or remove the enclosure cover.
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Set the enclosure cover down carefully with the sealing surfaces facing upwards.
Closing the enclosure cover
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Apply acid-free grease that is suitable according to EN 60079-14 (e.g. Hevolit) to the joint
face of the cover.
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If available, fit the clean sealing ring into the groove on the sealing surface of the enclosure
cover.
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Carefully close the enclosure cover.
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Insert the cover screws into the screw holes and tighten them to the specified tightening
torques (see the "Technical data" chapter).
DANGER! Explosion hazard due to damaged joint faces!
Non-compliance results in fatal or severe injuries.
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Always carefully lift, take off and attach the enclosure cover.
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Make sure that the cover screws do not scratch or scuff the sealing surfaces when
they are undone or tightened and when the cover is removed.
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Use suitable lifting tool without sharp edges.
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Replace the enclosure cover or enclosure with damaged joint face immediately.
WARNING! Risk of crushing if heavy enclosure cover falls down!
Non-compliance can result in severe or fatal injuries.
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Observe the excessive weight of the enclosure cover when opening.
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Before opening the enclosure, have a suitable lifting tool ready
(take into account the weight; see "Technical data" chapter).
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Use a suitable lifting tool.
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Secure the device against tilting.
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Attach a suitable hinge if necessary.
WARNING! Explosion hazard due to damaged joint faces!
Non-compliance results in fatal or severe injuries.
▶
Do not open the enclosure more than 180°. If a wider opening angle is unavoidable,
unscrew the screws from the cover on the hinge side.