Post-Discharge Maintenance
October 2014
6-12
06-236115-001
25. Keep the vent valve (Item 4) open. Close valve (Item 5) and once again open valve (Item
6) to reapply nitrogen pressure to the actuation port.
26. While momentarily maintaining pressure on the actuation port, remove the recharge adapt-
er (Item 1) from the cylinder valve outlet port and immediately install the safety cap.
27. Close the vent valve (Item 4) and open vent valve (Item 30) to relieve pressure on the
quick disconnect fitting (Item 32).
28. Ensure Vent valve (Item 4) and valve (Item 29) are closed.
29. Separate the quick disconnect fitting (Item 32).
30. Close the nitrogen supply valve (Item 16) and open vent valve (Item 5) to vent nitrogen
from the supply line.
31. Remove the seating adapter (Item 2) from the cylinder valve and reinstall the actuation
port protection cap.
32. Close vent valves and the nitrogen supply valve (Items 5, 6, and 30).
Note: When charging more than one HFC-227ea cylinder, it may be advantageous to leave
the pump (Item 14) running. In this case, when a cylinder is full, rotate the 3-way valve
(Item 9) to direct the flow back to the supply tank through the HFC-227ea return line.
To resume charging operations, return the 3-way valve (Item 9) back to the filling po-
sition.
To change the HFC-227ea storage container (Item 25), close the cylinder valves (Items 19 and
22) and close valves (Items 21 and 24). Carefully open vent valves (Item 20 and 23) to bleed
pressure. Disconnect the charging lines from the HFC-227ea supply cylinder. Position a new
HFC-227ea supply cylinder in its place. Connect the charging lines to the new HFC-227ea
supply cylinder, ensuring vapor and liquid lines are connected to their proper valves. Close vent
valves (Items 20 and 23). Open valves (Items 21 and 24).
CAUTION
Hissing or discharge coming from vent valve (Item 4) indicates the piston is
not seated properly or has opened. If this occurs, repeat Step 23. Verify that
the cylinder valve piston remains closed.
Содержание ECS
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