Service Valves - TM-5-4120-356-140131

TM 5-4120-356-14

I f any leaks are found,

in accordance with the procedures given in paragraph 4-4c.

r e p a i r in accordance with paragraph 4-4d.

(f) Refer to figure 4-4 and evacuate the refrigerant system.

( g ) Charge the system with refrigerant in accordance with the pro-

c e d u r e s given in paragraph 4-10.

(h) Reinstall the RFI filter pane (see figure 3-22). Reinstall the

junction box (see figure 3-12).

Service Valves

( 1 ) I n s p e ct i o n .

( a ) Turn the selector switch to the " O F F " position and disconnect

the air conditioner from the electrical power source.

( b ) Inspect the suction pressure service valve and the discharge

p r e s s u r e service valve externally for obvious defects and/or damage. Make sure that

t h e v a l v e c a p s a r e s e c u r e l y i n p l a c e , t h e valve stems are tightly closed, and the

c a p nuts are seated securely on the valves.

4 - 4 c . If any leaks are found, repair in accordance with paragraph 4-4d.

( 2 ) R e p l a c e . R e p l a c e the suction pressure service valve and/or the dis-

c h a r g e pressure service valve if evidence is found of damage which would impair ser-

viceability. Refer to steps (3) and (4) for removal of defective service valve(s)

and the installation of new service valve(s).

( 3 ) Removal. (See figure 4-17.)

(4) Installation.

(a) Install service valve(s) (see figure 4-17).

( b ) Perform any further maintenance of refrigerant components re-

q u i r e d at this time.

( c ) Purge the refrigerant system in accordance with the procedures

( d ) Check the service valves for leaks in accordance with paragraph

4 - 4 c . If any leaks are found, repair in accordance with paragraph 4-4d.

(e) Refer to figure 4-4 and evacuate the refrigerant system.

( f ) Charge the system with refrigerant in accordance with the pro-

c e d u r e s given in paragraph 4-10.