Replacing the 2145 UPS-1U

You can replace the 2145 UPS-1U only after you remove the previous uninterruptible power supply.

Before you begin

Use the reference numbers in parentheses at the end of each notice (for example, D005) to find the matching translated notice in IBM System Storage SAN Volume Controller Safety Notices.

DANGER
Uninterruptible power supply (UPS) units contain specific hazardous materials. Observe the following precautions if your product contains a UPS:
  • The UPS contains lethal voltages. All repairs and service must be performed only by an authorized service support representative. There are no user serviceable parts inside the UPS.
  • The UPS contains its own energy source (batteries). The output receptacles might carry live voltage even when the UPS is not connected to an AC supply.
  • Do not remove or unplug the input cord when the UPS is turned on. This removes the safety ground from the UPS and the equipment connected to the UPS.
  • The UPS is heavy because of the electronics and batteries that are required. To avoid injury, observe the following precautions:
    • Do not attempt to lift the UPS by yourself. Ask another service representative for assistance.
    • Remove the battery, electronics assembly, or both from the UPS before removing the UPS from the shipping carton or installing or removing the UPS in the rack. (D007)
CAUTION:
This part or unit is heavy but has a weight smaller than 18 kg (39.7 lb). Use care when lifting, removing, or installing this part or unit. (C008)

About this task

Perform the following steps to replace the 2145 UPS-1U:

Procedure

  1. Place the 2145 UPS-1U on a flat, stable surface with the front of the 2145 UPS-1U facing toward you.
  2. On each side of the 2145 UPS-1U, attach the long end of a mounting bracket to the 2145 UPS-1U using four of the supplied M3 × 6 screws ( 2  in Figure 1).
    Figure 1. Installing the UPS mounting brackets for the 2145 UPS-1U
    Installing the UPS mounting 2145 UPS-1U into the rack
  3. Stand at the front of the rack and place the back of the 2145 UPS-1U onto the support rails, and then slide the 2145 UPS-1U into the rack.
  4. At the front of the 2145 UPS-1U, install the two mounting screws ( 1  in Figure 2).
    Figure 2. Mounting screws for the 2145 UPS-1U
    Mounting screws of the 2145 UPS-1U
  5. Remove the 2145 UPS-1U front panel by pulling it towards you and to the left, as shown in Figure 3.
    Note: If you are having difficulty pulling the right side of the panel free from the 2145 UPS-1U, insert a flat-blade screwdriver between the right side of the cover and the frame and gently pry it free.
    Figure 3. Removing the 2145 UPS-1U front panel
    This figure shows how to remove the 2145 UPS-1U front panel
  6. Remove the protective tape from the internal battery connector (circled in Figure 4).
    Figure 4. The 2145 UPS-1U internal battery connector with protective tape
    This figure shows the 2145 UPS-1U internal battery connectors with protective tape covering the connector
  7. Connect the internal battery connector (circled in Figure 5).
    Figure 5. The 2145 UPS-1U with internal battery connectors in place
    Connecting the internal battery connectors
    Note: A small amount of arcing might occur when connecting the batteries. This is normal and does not damage the unit or present any safety concerns.
  8. Reinstall the front panel.
  9. At the back of the 2145 UPS-1U, connect the SAN Volume Controller power cable to load segment 2 receptacle ( 3  in Figure 7). If applicable, install the power cable-retention bracket (shown in Figure 6).
    Note: The 2145 UPS-1U is intended to maintain power on a single SAN Volume Controller node until data can be saved to the local hard disk drive. Only SAN Volume Controller nodes can be plugged in to the 2145 UPS-1U or else the SAN Volume Controller cluster malfunctions. You must attach only one SAN Volume Controller to the 2145 UPS-1U, and nothing else.
    Figure 6. The 2145 UPS-1U cable retention bracket connected to the 2145 UPS-1U
    The cable retention bracket connected to the 2145 UPS-1U
  10. Reconnect the SAN Volume Controller signal cable to the communication port ( 2  in Figure 7).
  11. Reconnect the 2145 UPS-1U main power cable, from either the power distribution unit or from the redundant AC-power switch, into the input connector ( 1  in Figure 7).
    Note: If the 2145 UPS-1U does not seem to work, ensure that the power cable is connected properly or reconnect the power cable.
    Figure 7. 2145 UPS-1U (rear view)
    This figure shows the rear view of the 2145 UPS-1U
    The 2145 UPS-1U is now in standby mode with the SAN Volume Controller offline. All indicators that are shown in Figure 7 are off.
  12. To turn on the 2145 UPS-1U, press and hold the on/off button ( 7  in Figure 8). On some versions of the 2145 UPS-1U, you need a pointed device, such as a screwdriver, to press the on/off button. The 2145 UPS-1U undergoes a self-test, taking approximately five seconds, before the power-on indicator  6  and the load indicators ( 1  and  2 ) light up permanently to indicate that the 2145 UPS-1U is supplying power to the SAN Volume Controller . The 2145 UPS-1U begins to charge its battery while in normal mode.
    Figure 8. 2145 UPS-1U front-panel assembly
    This figure shows the 2145 UPS-1U front-panel assembly.
    Note: If the 2145 UPS-1U battery is not sufficiently charged, the SAN Volume Controller node is not able to join the cluster. The node displays Charging on its front panel until the 2145 UPS-1U battery reaches sufficient charge, which could take an hour. When the SAN Volume Controller node rejoins the cluster, it might display Recovering on its front panel while the 2145 UPS-1U battery finalizes its charge.