PRIMARY THERMAL EXPANSION VALVE.

TM 5-4120-369-14

5-25.

PRIMARY THERMAL EXPANSION VALVE.

a. General. The primary thermal expansion valve is hermetically sealed and requires no

adjustment.

Primary Thermal Expansion Valve

Removal.

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

for aggravation of existing cardiac rhythm abnormalities

or the induction of arrhythmias, as a result of exposure to

fluorocarbon refrigerant gases (freons). Such individuals

should be evaluated by local medical authorities before

working in environments where potential freon exposure

may occur.