Removing the 2145 UPS-1U

Before you remove the 2145 UPS-1U, read all safety notices.

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)

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)

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

Attention: Check to make sure that the SAN Volume Controller that is powered by this 2145 UPS-1U is shut down and turned off, prior to step 1. See MAP 5350: Powering off a SAN Volume Controller node.

At the front of the 2145 UPS-1U, press and hold the on/off button ( 1 in Figure 1) until the power light is extinguished (approximately five seconds). 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 enters standby mode.
Figure 1. The 2145 UPS-1U front-panel assembly
At the back of the 2145 UPS-1U, remove the power cable retainer before disconnecting the SAN Volume Controller power cable from load segment receptacle 2 ( 3 in Figure 2).
Disconnect the signal cable from the communication port ( 2 in Figure 2).
Disconnect the main power cable from the main power source ( 1 in Figure 2).
Figure 2. 2145 UPS-1U (rear view)

Some SAN Volume Controller node types have two power supply units. Both power supplies must be connected to the same 2145 UPS-1U. The SAN Volume Controller 2145-CF8 is an example of a node that has two power supplies. The SAN Volume Controller 2145-8A4 is an example of a node that has a single power supply.
Remove the 2145 UPS-1U front panel, 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
Disconnect the internal battery connector, which is circled in Figure 4.
Figure 4. The 2145 UPS-1U internal-battery connector
After pulling the two connectors apart, cover the exposed battery connector (shown in Figure 5) with adhesive tape.
Figure 5. The 2145 UPS-1U internal battery connector with protective tape
Reinstall the front panel.
At the front of the 2145 UPS-1U, unscrew the two mounting screws , as shown in Figure 6.

Figure 6. Mounting screws for the 2145 UPS-1U
From the back of the rack, push the 2145 UPS-1U forward approximately 5 cm (2 in) to enable you to pull it from the rack.
Go to the front of the rack.
Pull the 2145 UPS-1U forward and remove it from the rack.