UTY 618
4
RESTRICTED
November 1995
Section 100: Before Replacing the Batteries . . .
Before replacing the batteries in the
UNITY
/I UPS, you must do one of the following:
Power down the
UNITY
/I UPS
or
Enable the
UNITY
/I unit’s “battery maintenance mode.”
Whenever possible, you should power down the UPS while servicing the batteries. However, you
may use battery maintenance mode if necessary. Battery maintenance mode allows a qualified
technician to service the batteries without powering down the UPS or the load equipment.
Use the two questions below to help determine whether to power down the unit (Section 101)
or use battery maintenance mode (Section 102).
100-1.
Can the load equipment be shut down while you service the batteries?
G
YES
Go to Section 101 now (skip question 100-2).
G
NO
Continue with question 100-2 below.
100-2.
Does the UPS have an external bypass switch?
G
YES
Go to Section 101.
G
NO
Go to Section 102.
