Maintenance; Important Information - Ametek 420VA Manual

5.0 MAINTENANCE

Storage
The UPM may be stored for extended periods in an environment that
does not subject the UPM to extremes of temperature or humidity.
When storing for extended periods, the battery should be charged every
six months. If the storage location is characterized by above normal
temperature, the battery should be recharged every two months. The
UPM does not need to be turned on for charging to occur – it only needs
to be plugged in with batteries connected.
NOTE: This product is not designed for continuous use on batteries.
Attention

Important Information

The batteries inside this UPM are a special type called "sealed lead-
acid". These batteries use a non-liquid electrolyte, which makes it
possible to use them in any physical orientation. The batteries are
designed to last from two to five years. Their actual life span will depend
on several factors including how often power outages occur, how long
power outages last, and the temperature of the environment in which
the UPM operates. Frequent, long duration power outages will shorten
battery life more than infrequent, short duration outages. Consistent high
temperatures in the area where the UPM is used will also shorten battery
life.
The UPM is equipped with a Low/Replace Battery LED ( ) on the front
panel. If the LED illuminates, you should make sure that the battery has
at least six hours to charge without a power interruption. Inadequate
(much shorter than usual) backup time, premature low battery alarm
sounds, and persistent Low/Replace Battery LED illumination are all
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A01-00055 Rev G