HP PowerTrust A3589A, Manual

Page: 226 / 257

D-8 Appendix D
Field Replaceable Units
Removal and Replacement Procedures
4. Use a screwdriver to loosen the screw at the center of each captive thumbscrew on the
Battery Precharge Shorting Plate, then unscrew the thumbscrews and remove the
plate. See Figure 3-8.
5. Disconnect the Battery Box cable from the Electronics Unit.
6. Remove the filler panels in front of the battery box.
7. Loosen the thumbscrew at the bottom of a battery pack. See Figure 2-4.
8. Grasping the handhold at the top of the battery with one hand and supporting the
bottom of the battery with the other, carefully pull the battery from its slot and set it
aside in a safe place. See Figure 2-5.
WARNING Each battery pack weighs approximately 15 kg (33 lbs). Exercise
appropriate caution to avoid personal injury when removing the
battery packs.
9. Remove the new battery pack from its shipping container. Do not destroy or dispose of
the container; you will use it to repack the old battery pack.
10.Slip the guide at the bottom of the new battery pack between the tracks at the bottom of
the Battery Box and push the battery completely into the Battery Box slot. See Figure
3-3.
You may need to rock the battery slightly if the battery binds on the tracks.
11.Fasten the thumbscrew at the bottom of the battery pack.
12.Put the old battery pack in the shipping container from which you took the new battery
pack and follow the return and disposal procedures that were shipped with the
replacement battery pack.
13.Repeat steps 7 through 12 for the remaining battery packs on one side of the Battery
Box. When you finish replacing the battery packs on one side, replace the battery packs
on the other side, one at a time. Begin with the left-most battery pack.
14.Connect the battery cable to the connector on the Electronics Unit.
15.Check the Battery Precharge Failure LED (see
15
in Figure 1-3).
If the LED is off, continue.
If the LED is on, do not reinstall the Battery Precharge Shorting Plate. Refer to
“Case 14 (Abnormal) — Battery Precharge Failure” in Chapter 6.
16.Orient the plate so that the notch is positioned over the Battery Box cable connector,
then reattach the plate making sure that the prongs on the plate are pressed firmly into
the clips in the Electronics Unit. See Figure 3-9.
CAUTION Operating the UPS without the Battery Precharge Shorting Plate is not
supported and may result in loss of UPS AC output.
17.Tighten the thumbscrews on either side of the Battery Precharge Shorting Plate.