Replacing the 2145 UPS

You can replace the 2145 UPS after first removing the current 2145 UPS.

Use the reference numbers in parentheses at the end of each notice, such as (C003) for example, to find the matching translated notice in IBM® Systems Safety Notices.

DANGER

Uninterruptible power supply units contain specific hazardous materials. Observe the following precautions if your product contains an uninterruptible power supply:

The uninterruptible power supply 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 uninterruptible power supply.
The uninterruptible power supply contains its own energy source (batteries). The output receptacles might carry live voltage even when the uninterruptible power supply is not connected to an ac supply.
Do not remove or unplug the input cord when the uninterruptible power supply is turned on. This removes the safety ground from the uninterruptible power supply and the equipment connected to the uninterruptible power supply.
The uninterruptible power supply is heavy because of the electronics and batteries that are required. To avoid injury, observe the following precautions:
- Do not attempt to lift the uninterruptible power supply by yourself. Ask another service representative for assistance.
- Remove the battery, electronics assembly, or both from the uninterruptible power supply before removing the uninterruptible power supply from the shipping carton or installing or removing the uninterruptible power supply in the rack.

(D007)

Perform the following steps to replace the 2145 UPS:

Reduce the weight of the 2145 UPS by removing the battery assembly first before removing the unit from the shipping carton. Perform the following steps to remove the battery assembly:
1. Open the top of the shipping carton and then, with the assistance of another service representative, grip the flaps on either side of the 2145 UPS. See Figure 1.
  Figure 1. Two persons unboxing a 2145 UPS
2. Slide the 2145 UPS to the end of the carton and rest its front edge on the edge of the carton as shown. See Figure 2.
  Figure 2. Slide the 2145 UPS to the edge of the carton
3. Remove the two bolts and additional nut on the left side of the bracket. See Figure 3.
  Figure 3. Remove the battery retaining bracket
4. Remove the battery retaining bracket .
5. Grip the tab on the front of the battery and pull the battery forward until it can be accessed by two service representatives.
6. With the assistance of another service representative, lift the battery assembly clear of the 2145 UPS and place it to one side.
  Note: The cover for the 2145 UPS is not installed: it is included in the box with the 2145 UPS. Install the front cover after you have completed the other installation steps.
With the assistance of another service representative, lift the 2145 UPS onto a flat, stable surface.
Remove the electronic assembly from the 2145 UPS:
1. Remove the two screws (see Figure 4).
  Figure 4. Removing the 2145 UPS electronics assembly
2. Pull the electronics assembly out of the 2145 UPS, and put it to one side.
Stand at the front of the rack and, with aid from another service representative, place the back of the 2145 UPS onto the support rails, and then slide the 2145 UPS into the rack.
Install the front flathead screws (see Figure 5).
Figure 5. Replacing the 2145 UPS into a rack
With aid from another service representative, perform the following steps:
1. Install the battery.
2. Install the electronics assembly.
Note: A grounding screw feature is provided on the back of the 2145 UPS so that you can attach a ground bonding wire if required by local wiring codes. Since the safety of the 2145 UPS chassis is maintained through the input line power cord, you are usually not required to use this additional grounding screw feature.
Reconnect the signal cables.
Attention: When reinstalling the signal cables, use only the top row of serial connectors. Installing signal cables in the bottom row of serial connectors causes the 2145 UPS to malfunction.
Install the front panel.
At the back of the 2145 UPS, plug the 2145 UPS main power cable into the power socket, in Figure 6.
Note: The 2145 UPS is intended to maintain power on SAN Volume Controller nodes until data can be saved to the local hard disk drive. Only SAN Volume Controller nodes can be plugged in to the 2145 UPS, or the SAN Volume Controller cluster malfunctions.

Figure 6. Installing the 2145 UPS power cable

Attention: If possible, ensure that the two uninterruptible power supply units are not connected to the same power source.
Note: The 2145 UPS requires a dedicated branch circuit that meets the following specifications:
- One 15 A circuit breaker in each branch circuit supplies the power to a 2145 UPS
- Single-phase
- 50 or 60 Hz
- 200 – 240 Volt
All the front panel indicators (see Figure 7) flash for a short time while the 2145 UPS runs a self test. When the test is complete, the mode indicator flashes to show that the 2145 UPS is in standby mode.
Press and hold the on button until you hear the 2145 UPS beep (approximately one second). The mode indicator stops flashing and the load level indicators display the percentage of load that is being supplied by the 2145 UPS. The 2145 UPS is now in normal mode and is charging its battery.

Figure 7. Power switch and indicators of the 2145 UPS
- 1 Mode indicator
- 2 On button
Install the front cover.