9 Maintenance and Visual Inspection Safety Manual / Explosion Protection Manual
56926BA26, Rev. 06, 04/2019
Visual Inspection
Regularly perform a visual inspection at least once every three years. To do this,
use the plan for the visual inspection from chapter 10. Initiate immediate appro-
priate measures if you discover damage during visual inspection. If necessary, im-
mediately disconnect the detector from the power supply.
When determining the intervals for the visual inspection, the following conditions
are to be considered:
• ambient conditions (temperature, humidity, corrosive atmosphere, shock
and vibration).
• operating conditions (utilization, incorrect operation).
• major changes in the whole system (e.g. changes in the classification of ex-
plosion protection zones).
Seals
If the cover or the housing is opened, the corresponding seals should be examined
and replaced if necessary.
Do not install other seals. If seals need to be replaced, contact Berthold for re-
placement, otherwise the approval for Explosions Protection is void.
Cleaning
Make sure that the cable glands and the name plates are not damaged during
cleaning. Cleaning measures that may cause damage, such as grinding, filing, etc.,
are not permitted.
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