TM9-4120-400-14
EVACUATING THE REFRIGERANT SYSTEM.
Evacuation
This task covers:
INITIAL SETUP
Tools
Equipment Condition
Install service manifold (para 5-9).
Refrigeration Unit Service Tool Kit
Appendix B, item 1
Vacuum Pump
Appendix B, item 3
Figure 5-13. Evacuation of Refrigerant System
EVACUATION
1. Check that new dehydrator was installed. If not, install one. (See para 5-20.)
2. Check that service manifold charge valve is closed.
3. Check that unit HIGH and LOW PRESSURE CHARGING VALVES are open
4. Connect the yellow 3/8 inch hose to vacuum pump.
5-39
