UPS Maintenance

Regular equipment testing should be part of a facility’s UPS maintenance schedule. Such a schedule will include the following elements:

Quarterly:

Visually inspect equipment for loose connections, burned insulation or any other signs of wear.
Visually check for liquid contamination from batteries and capacitors.
Clean and vacuum UPS equipment enclosures.
Check HVAC equipment and performance related to temperature and humidity.

Annually:

Conduct thermal scans on electrical connections to ensure all are tight and not generating heat, which is the first and sometimes only indication of a problem. A non-evasive diagnostic tool helps technicians identify hot spots invisible to the human eye. Technicians will retorque if thermal scan provides evidence of a loose connection.
Provide a complete operational test of the system, including a monitored battery-rundown test to determine if any battery strings or cells are near the end of their usefulvlives.
Test UPS transfer switches, circuit breakers and maintenance bypasses.