IBM 084, Installation And User Manual

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Figure 36. Removing a Cooling Module (2)
Important: The cooling module bay must not be empty for more than two minutes while the enclosure is
powered up.
Inserting a cooling module
1. Rotate the cooling module so that the black release latch and handle are on the right side.
2. Slide the cooling module into its slot until the latch clicks home. The enclosure automatically detects
and uses the new unit.
Replacing a power supply unit (PSU)
The process involves removing the existing module and inserting a new one.
Removing a PSU
Important: Before removing a PSU, make sure you have a replacement module to insert.
1. Identify the PSU to be removed by using appropriate fault reporting software.
2. Ensure the other PSU has the “Power OK” LED lit.
3. Turn off the PSU to be removed.
4. Disconnect the AC power cord.
5. As shown in the following two figures, push the red release latch to the right and hold it (1), then pull
the module out by its handle (2).
Chapter 6. Module replacement 43