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Maintenance
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<p>The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, <a href="/facts/Machinery/wTCxFRfs">machinery</a>, building infrastructure and supporting utilities in industrial, business, and residential installations. Terms such as "predictive" or "planned" maintenance describe various cost-effective practices aimed at keeping equipment operational; these activities occur either before or after a potential failure. </p>