Liebert 350-500 VA user manual Cleaning the UPS, Maintaining Batteries, Maintenance

MAINTENANCE

The PowerSure PST UPS requires very little maintenance. Follow these practices to prevent problems.

Cleaning the UPS

The following will help ensure trouble-free operation for years:

•Vacuum dust from the ventilation intake occasionally.

•Wipe the cover periodically with a dry cloth.

Maintaining Batteries

The batteries are valve-regulated, nonspillable, lead acid and must be kept charged to retain their design life. The UPS continuously charges the batteries when connected to the utility supply, even while the UPS is switched off.

When storing the UPS, it is recommended to plug in UPS for at least 24 hours every four to six months to ensure full recharge of the batter- ies.

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