The installation supervision and commissioning processes ensure the correct installation and functionality of UPSs and their batteries.

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Fans inevitably experience mechanical wear, and therefore need replacing every five years. Faulty fans can expose internal parts to extra heat, which can cause early equipment failure.
Electrolytic-type capacitors, used in AC and DC filters, these need to be replaced every nine years. A capacitor failure threatens system availability and exposes the load to an unstable utility source.