Weidmuller Klippon STB 1 Montagerichtlinien Seite 10

Typical maintenance tasks are listed below:
• The gasket on increased safety enclosures should be checked for dama-
ge and replace the enclosure if necessary.
• Any discoloration could indicate a rise in temperature and the develop-
ment of a potential hazard.
• Cable glands and stopping plugs should be checked for tightness.
Cleaning
During each inspection, the enclosure should be cleaned with a damp cloth.
It is not allowed to clean the enclosure with hydrocarbon based cleaning
compounds!
Repair
Make sure that all is in compliance with the latest IEC 60079-19/
EN 60079-19 and all relevant national regulations while carrying out repair
and maintenance of electrical equipment in hazardous atmospheres. It is
not permissible for modifications and rework to be carried out that could
jeopardize the characteristics essential to explosion protection (type of
protection and temperature class).
Only the manufacturers' authorised parts can be used for replacements
and modifications. Failing to do so might invalidate the certificate. If it
is necessary to remove the equipment for maintenance purposes, the
exposed conductors must be correctly terminated in an appropriate certified
enclosure, e.g. Ex ‚e', or isolated from all sources of supply and either
insulated or earthed.
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