UTY 618
11
RESTRICTED
November 1995
300-5.
If the unit has external batteries, connect the external battery cable (+) to the
“+BATT” post at the top of the fuse board (see Figure 3). Reassemble in this order:
cable, flat washer, split lock washer, nut or cable, flat washer, nut with attached star
washer.
300-6.
Switch on the DC disconnect switch on the external battery cabinet(s), if applicable.
300-7.
In the order listed, reconnect the following. See Figure 3, on page 9, for connection
locations.
a. Connector to J1 on the fuse board.
b. Connector to J3 on the fuse board.
c. DC connector and bolt.
d. Fast-on connector to E5 on the fuse board. There may be a small spark.
e. Replace any tie wraps that were removed.
300-8.
Remove the handle from the battery drawer and reattach it to the back of the unit.
300-9.
Replace the bolt that secures the front of the battery tray to the floor of the chassis.
300-10.
Replace the bottom narrow front panel(s). If you have a UT8K, also replace the front
kick plate.
300-11.
Replace the front ventilation panel and secure it with the screws.
300-12.
!
If you powered down the UPS:
a. Switch on the DC disconnect switch on the external battery cabinets (if
applicable).
b. Reapply AC line to the UPS.
c. Turn the UPS key switch to “AUTO.”
d. Reapply the loads.
e. You have completed the battery replacement procedure. The UPS should be
running on line power with all of the load equipment applied. The
LINE
LED
should be on, and the
BATTERY
,
BYPASS
, and
ALARM
LEDs should be off.
