TGW NBS 30 Series, Инструкция по установке, эксплуатации и обслуживанию

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NBS IOM
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The condition of contacts must be checked on all contactors and starters that show signs of overheating. Make
sure that they are free of dust and are not excessively pitted or burned. When badly burned or worn, the contacts
must be replaced.
In the course of inspecting contact condition, spring pressure should be checked. As contact surface wears
down, spring pressure can be lost because of the overheating. Contact spring resiliency can usually be detected
by fingertip pressure.
Check for faulty door gaskets especially when there are excessive deposits of foreign materials. Particular
attention should be given to conductive deposits because they can cause flashovers and premature component
failure when allowed to collect to any great extent. Either reposition or replace defective gaskets and clean the
control cabinet.
CAUTION
Avoid touching components until they have had time to cool. Some may still be hot.
Check all overload settings on motor controls. Check for loose wiring and tighten as required.
CLEANING
When cleaning a control cabinet, it is best to use a vacuum cleaner rather than compressed air. A vacuum
cleaner removes rather than redistributes dust and dirt. Compressed air can damage and displace relay contacts
and springs.
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