Lenovo ThinkSystem Rear Door Heat eXchanger V2 User Manual page 32

Step 2. If the outer hose access panel is installed, remove the screw that secures the panel (if applicable),
then lift and remove the panel from the heat exchanger.
Figure 27. Removing the outer hose access panel
Step 3. Purge the nitrogen that has been filled in the hose from the hose.
Figure 28. Purging nitrogen
Loosen and remove the cap from the air-purging valve.
Press in on the valve stem of the air-purging valve to purge the nitrogen from the heat
exchanger. Continue holding in the valve stem until the pressure is released.
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ThinkSystem Rear Door Heat eXchanger V2 User Guide