TM 5-4120-361-14 1. Caution should be exer- cised with fluorocarbon re- frigerant gas (freons) as they can displace oxygen and there- by cause suffocation. 2. Personnel with a history or other evidence of cardiac rhythm abnormalities should be made aware of the potential for aggravation of existing cardiac rhythm abnormalities or the induction of arryth- mias, as a result of exposure to fluorocarbon refrigerant gases (freons). Such indivi- duals should be evaluated by local medical authorities be- fore working in environments where potential freon exposure may  occur. (1) Refer to figure 6-1 and dis- charge the refrigerant system. (2) Refer to figure 4-4 and remove rear  top  cover. (3) Refer to figure 4-9 and remove counterclockwise rotation condenser fan assembly and mounting bracket. (4) Refer to figure 5-8 and remove receiver mounting bracket. (5)  Unsolder  receiver  from  refrig- eration system tubing. c. Installation. — (1) Refer to figure 5-8 and mount receiver on compartment wall. 1. Brazing operations should be carried out using approved eye protection equipment and rods not containing cadmium. 2. Certain brazing operations may require mechanical venti- lation. 3. Local preventive medicine personnel should be queried if doubt exists as to rod compo- sition or ventilation require- ments. (2) Refer to paragraph 5-6 and solder receiver to refrigerant system tubing. NOTE Curved end of tube installed in top at receiver enters in length sufficient for tip of tube to face inner wall of re- ceiver. (3) Refer to paragraph 5-6 and leak test the refrigeration system. (4) Refer to figure 4-9 and in- stall condenser fan assembly. (5) Refer to figure 4-4 and in- stall  rear  top  cover. 1. Caution should be exer- cised with fluorocarbon re- frigerant gas (freons) as they can displace oxygen and there- by  cause  suffocation. 2. Personnel with a history or other evidence of cardiac rhythm abnormalities should be made aware of the potential for aggravation of existing cardiac rhythm abnormalities or the induction of arryth- mias, as a result of exposure to fluorocarbon refrigerant gases  (freons). Such indivi- duals should be evaluated by local medical authorities be- fore working in environments where potential freon exposure may  occur. (6) Refer to figure 6-1 and purge the refrigeration system. (7) Refer to figure 6-2 and charge refrigeration system. 5-27. Accumulator a. General. Refer to 5.26a. — 5-20