FLUID PRESSURE REGULATOR VALVES

TM 5-4120-369-14

5-27.

FLUID PRESSURE REGULATOR VALVES - Continued

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

(2) Refer to paragraph 4-18 and remove the air conditioner top rear cover.

(3) Refer to figure 5-11 and unclamp the regulator valve sensing bulb.

(4) Remove the regulator valve mounting clamp.

(5) Unsolder the regulator valve from the refrigerant system tubing. Remove by

drawing the bulb through the compartment wall.

Installation.

(1) Refer to figure 5-11 and mount the fluid pressure regulator against the compart-

ment wall using the mounting clamp.

Brazing operations should be carried out using approved

eye protection equipment and rods not containing cadmium.

Certain brazing operations may require mechanical ventilation.

Local preventive medicine personnel should be queried if

doubt exists as to rod composition or ventilation requirements.

(2)

Solder the pressure regulator valve to the refrigerant system tubing.

(3)

Feed the sensing bulb through the compartment wall and clamp in place.

(4)

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

(5)

Refer to paragraph 6-3 and purge the refrigeration system.

(6)

Refer to paragraph 4-18 and install the top covers.

Caution should be exercised with fluorocarbon refrigerant

gas (freons) 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 of existing cardiac rhythm abnormalities

or the induction of arrythmias, as a result of exposure

to fluorocarbon refrigerant gases (freons). Such indivi-

uals should be evaluated by local medical authorities before

working in environments where potential freon exposure

may occur.

(7)

Refer to paragraph 6-3 and charge the refrigerant system.

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