HIGH PRESSURE CUT OUT (HPCO) AND LOW PRESSURE CUTOUT (LPCO) SWITCHES

TM 5-4120-369-14

SERVICE VALVES - Continued.

5-17.

Installation.

(1) Refer to figure 5-1A and mount service valve.

(2) Attach refrigerant line flare nut to service valve.

Caution should be exercised with fluorocarbon

refrigerant gas 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 arrhythmias, as a

result of exposure to fluorocarbon refrigerant gases.

Such individuals should be evaluated by local medical

authorities before working in environments where

potential refrigerant exposure may occur.

(3) Refer to figure 6-3 and discharge tine refrigeration system.

(4) Refer to figure 5-1A and disconnect the service valve flare nuts.

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

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

(7) Refer to figure 6-3 and charge the refrigeration system.

(8) Refer to paragraph 4-18 and install top covers.

HIGH PRESSURE CUT OUT (HPCO) AND LOW PRESSURE CUTOUT (LPCO)

SWITCHES.

Removal .

(1) Refer to para 4-18 and remove 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 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.

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

(3) Refer to paragraph 5-17 and disconnect the service valve flare nuts.