OnLine Power Signal Saver IPC User Manual
Page 46
6002-1842 Rev A ECO# 8881
36
2.2.8 Battery Replacement
Purpose: Describes how to change one or more batteries.
NOTE: If batteries are not properly connected or the harness is not fully plugged into the BBS controller,
the Alarm LED will flash when the Bypass Switch is returned to UPS and the AC Input-Output breaker is
ON.
Caution!
Since the batteries are connected in series, disconnecting the battery harness to any one battery disconnects
the entire string. Therefore, while a battery is being changed, the BBS cannot provide backup power. This
procedure should not be done while critical loads are running that depend upon the
BBS’s backup power.
IMPORTANT!
Although it is not essential that the Manual Bypass
Switch be placed in BYPASS since the Power
Transfer Switch stays aligned to the utility, if the BBS
is shut down or batteries are unavailable, it is a good
safety practice to also place the Manual Bypass
Switch in BYPASS to positively remove power from
the PTS and BBS AC input terminal block whenever
any maintenance is performed.