TM 9-4120-407-14
4-13. PURGING THE REFRIGERANT SYSTEM.
Purge
This task covers:
INITIAL SETUP
Equipment Conditions:
Tools
Refrigerant system discharged. See para 4-12.
Refrigeration Unit Service Tool Kit
(Item 1, Appendix B)
Goggles (Item 1, Appendix B)
Nitrogen Regulator (Item 6, Appendix B)
Materials/Parts
Nitrogen (Item 7, Appendix E)
Purge.
The pressure in a nitrogen cylinder can exceed 2000 psi. A nitrogen
pressure regulator should be used at all times to avoid personal
injury.
Nitrogen is an inert gas that can cause suffocation and must be
discharged in a well ventilated area.
(1) Connect the charge hose to a nitrogen regulator and dry nitrogen cylinder.
Figure 4-8. Nitrogen Tank Connection
4-31