LIQUID LINE AND PRESSURE EQUALIZING SOLENOID VALVES (L1) , (L2).

TM 5-4120-369-14

Brazing operations should be carried out using approved

eye protection equipment and rods not containing cadmium.

Certain brazing operations may require mechanical venti-

lation.

Local preventive medicine personnel should be queried

if doubt exists as to rod composition or ventilation

requirements.

(2) Refer to paragraph 5-6 and solder receiver to refrigerant system tubing.

(3) Refer to paragraph 6-3 and leak test the refrigeration system.

(4) Refer to paragraph 4-18 and install rear top cover.

(5) Refer to para 6-3 and purge the refrigeration system.

(6) Refer to para 6-3 and charge refrigeration system.

LIQUID LINE AND PRESSURE EQUALIZING SOLENOID VALVES (L1) , (L2).

General. The solenoid valves are electrically-operated valves, which close when

electrical power is applied to the solenoid coils. Both are alike, only the usage is different.

L1 is open in cooling mode. When the air in the conditioned space has lowered to the

Temperature Control Switch (S3) setting, (By-pass mode) the valves reverse.

Removal.

Caution should be exercised with flourocarbon refrigerant

gas (freon) as they can displace oxygen and thereby

cause suffocation.

Personnel with a history or other evidence of cardiac

rhythm abnormalities should be made aware of the

potential for aggravation existing cardiac rhythm abnor-

malities or the induction of arrhythmias, as a result of

exposure to flourocarbon refrigerant gases. Such

individuals should be evaluated by local medical authorities

before working in environments where potential refrigerant

exposure may occur.

(1) Refer to paragraph 6-3 and discharge the refrigerant system.

(2) Refer to paragraph 4-18 and remove top covers.

(3) Refer to figure 5-5 and remove solenoid cover and coil.

(4) Remove two solenoid valve mounting screws.

(5) Unsolder solenoid valve from tubing.