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D-102
Additional information
Maintenance
Preventive maintenance
DD382159.eps
General inspection
Visual checks and general cleaning of the cubicles
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Check the lack of humidity and foreign bodies inside and outside the switchboard.
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Examine the outer finish. If necessary, touch up any paint scratches and replace
any damaged or rusted parts.
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Clean the switchboard, preferably with a vacuum cleaner.
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If necessary, clean the ventilation system and change the filters.
Visual check of busbars
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Connections do not need to be tightened as they was already be tightened to the
tightening torque in worshop and the use of a contact washer compensates for
possible creeps due to overheating. The presence of vernish guaranteeing correct
tightening torque, is intact.
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The control of busbars connections and outgoing cables connections can be
carried when disassembling the protection (out of supply) or if a hot point is detected
(infrared control or thermal sensors). A hot point materialises by a change in the
copper colour.
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In case of hot point see "Corrective maintenance".
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Check the condition of insulating busbars supports.
Cleaning of panel ventilation filters
Standard or fine filters
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Wash with water (preferably using a high-quality detergent).
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It is also possible to remove the dust by tapping, vacuuming or blowing with
compressed air.
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If there is any oil or grease, change the filter.
E20488.eps