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MAINTENANCE
The PowerSure PSP 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 the UPS for at
least 24 hours every four to six months to ensure full recharge of the
batteries.
Battery Replacement
This UPS is equipped with internal “hot swappable” batteries that the
user can replace without shutting down the UPS or connected loads.
!
CAUTION
A battery can present a risk of electrical shock and high
short circuit current. The following precautions should be
observed before replacing the batteries:
• Remove rings, watches, and other metal objects.
• Do not lay tools or other metal objects on top of the batter-
ies.
• If the battery replacement kit is damaged in any way or
shows signs of leakage, contact your local dealer or Liebert
representative immediately.
• Do not dispose of batteries in a fire. The batteries may
explode.
• Dispose of old batteries according to local codes.
NOTE
Caution should be exercised when replacing the batteries
because the load is unprotected from disturbances and power
outages during this procedure.