TM9-4120-400-14
CHARGING THE REFRIGERANT SYSTEM .
b. Partial Charge
a. Full Charge
This task covers:
INITIAL SETUP
Tools
General Safety Instructions
Refrigeration Unit Service Tool Kit
Appendix B, item 1
Goggles
Appendix B, item 2
D A N G E R O U S CHEMICAL REFRIGERANT
Gloves
U N D E R PRESSURE
Appendix B, item 2
is used in the operation of this equipment.
Materials/Parts
Use great care to avoid contact with liquid refrigerant or
inhaling refrigerant gas being discharged from any
Refrigerant R-22
container under pressure. Sudden and irreversible
Appendix E, item 4
tissue damage can result from freezing. Wear thermal
protective gloves and a face protector or safety glasses
Equipment Condition
in any situation where skin or eye contact is possible.
Prevent contact of refrigerant gas with flame or hot
Evacuate the refrigerant system (para 5-15).
surfaces. Heat causes the refrigerant to break down and
form carbonyl chloride (phosgene), a highly toxic and
corrosive gas.
Never introduce high discharge pressure into a
refrigerant cylinder. This can cause the cylinder to
rupture and injure personnel.
Figure 5-14.
Refrigerant Charging (Total System)
5-41
