Background; Procedure - IBM Power775 Service Procedure

---- Appendix G: FDT Pressure Test Calibration Procedure ----

11.2 Background:

This document contains the procedure for performing an
Tool (FDT) pressure test calibration procedure for an
To ensure that all water cooled components in the
IBM
free, the Power 775 Fill and Drain Tool (FDT) is equipped with air pressure testing
capability. The FDT Pressure Test Calibration routine is designed as a diagnostic test
to verify the integrity of the FDT air pump, associated plumbing, and hose assemblies.
This procedure tests for leaks within the FDT and FDT hose assemblies, and must be
completed before a component (FRU) pressure test or fill is executed. The results of
the calibration routine are recorded within the FDT.
If the calibration passes, system and component pressure tests can be
completed.
If the calibration fails, there is a functional defect in the FDT or hose
assemblies. System or component pressure tests cannot be completed. System
or component fills must not be completed unless pressure tests are done first to
ensure there are no leaks. Upon a calibration failure, the next level of support
must be contacted for FDT debug and repair.
Once the FDT has been activated, a system or component fill procedure cannot be
executed unless both the Pressure Test Calibration and Component Pressure Test
have passed. The water pump within the FDT will otherwise be disabled until these
conditions are met.
To properly complete a pressure test, the FDT hose assemblies must be purged of
water. No specific hose drain procedure is required; the Pressure Test Calibration
routine will drain all required hose assemblies if they have been left full of water.
Reference Information:
IBM
Power 775 FDT P/N:
Hose assemblies/adapters required:
Total Pressure Test Calibration runtime: 1 min (air pump on 30 s)
NOTE: Some steps in this procedure may be redundant due to other service operations
being completed prior to this procedure. If a step has already been completed, verify
that the step has been completed properly and proceed to the next step.

11.3 Procedure:

NOTE: If you already have the FDT powered on, proceed to Step 14.
start procedure at Step 1.
Power775 Disk Enclosure Chassis Service Procedure
45D6928
HA1 (45D8561)
HA2 (45D8562)
A3 (45D8567)
Page 158 of 171
IBM
Power 775 Fill and Drain
IBM
Power 775 system.
IBM
Power 775 system are leak-
Otherwise,