IBM Rear Door Heat eXchanger V2, Руководство по установке и обслуживанию

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Chapter 4. Installing the heat exchanger
Attention: Because of the size and weight of the heat exchanger, three trained
persons are required to move, install, replace, remove, or transport the heat
exchanger.
This chapter provides instructions for installing and removing the heat exchanger.
Installation guidelines
Follow these guidelines when you install the heat exchanger:
v
Read the safety information that begins on page v. This information will help you
work safely.
v
Because of the size and weight of the heat exchanger, three trained persons are
required to install or remove the heat exchanger.
v Observe good housekeeping in the area where you are working. Place removed
packing materials, tools, and other parts in a safe place.
v
Do not overtighten plumbing fittings or connections. This will cause leaks and
might damage the plumbing fittings.
v Use pipe dope on all threaded plumbing connections to ensure against leaks.
v
Do not try to bend or reposition copper tubing. Excessive movement or bending
of copper tubing might damage the tubing and create leaks. If you find leaks,
check all plumbing connections and fittings for leaks before you connect power to
the rack or any of the installed components.
v
Repair all leaks before you connect power to the rack or any of the installed
components.
v After the heat exchanger is filled, be sure to remove any excess water that might
be left over from the filling process.
v
Plumbing components expand and contract with changing conditions and might
fail or loosen after installation. Place paper towels under the heat exchanger for a
period of time; then, examine them for signs of a leak. If it appears that there
might be a leak, carefully inspect the entire heat exchanger to determine whether
there is a leak or whether it is water that is from the filling process.
v If the heat exchanger core or copper tubing is leaking or is damaged, remove it
from the rack and see Appendix A, “Getting help and technical assistance,” on
page 77 for information.
v
New heat exchangers can be filled with pressurized nitrogen after assembly.
Before you install the heat exchanger, the nitrogen must be purged from the heat
exchanger in a well-ventilated area. To purge the nitrogen, remove the caps from
the air-purging valves and press in on the valve stems to release the nitrogen.
v
When you install heat exchangers on a suite of racks, secure the racks together
first; then, install the heat exchangers.
© Copyright IBM Corp. 2011, 2013
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