Compressor - TM-5-4120-356-140107

TM 5-4120-356-14

( 3 ) T u r n thermostat control knob counter-clockwise to its limit.

( 4 ) O p e n c h a r g i n g cylinder outlet valve about two turns.

( 5 ) O p e n s u c t i o n pressure service valve slowly while observing the

s i g h t glass. When the bubbles disappear and the sight glass becomes clear, close

the suction pressure service valve.

( 6 ) Allow the air conditioner to continue to run for 10 minutes. If

bubbles reappear, add more refrigerant until bubbles again disappear. Continue this

A d d refrigerant a little at a time so that the

c y c l e until no more bubbles appear.

s y s t e m is not overcharged.

( 7 ) Turn selector switch to "OFF" position.

( 8 ) Refer to figure 4-5 and remove pressure gages and charging cylinder.

a . General.

T h e compressor is a hermetically sealed unit and may not be

d i s a s s e m b l e d at the Direct Support Level.

Test.

WARNING

D i s c o n n e c t the air conditioner from the

electrical power source before attmpt-

i n g to perform maintenance or testing of

t h e compressor.

( 1 ) T u r n s e l e c t o r s w i t c h t o the "OFF" position and disconnect the air

conditioner from the electrical power source.

( 2 ) R e f e r t o f i g u r e 3 - 1 2 a n d partially remove the junction box.

( 3 ) I f t h e c o m p r e s s o r i s o b v i o u s l y burned out, proceed with step c.

( 4 ) I f t h e c o m p r e s s o r i s i n o p e r a t i v e , but does not appear to be burned

o u t , r e f e r t o f i g u r e 3 - 2 8 ( w i r i n g d i a g r a m ) a n d t e s t t h e compressor wire harness for

( 5 ) R e p a i r o r r e p l a c e a n y b r o k e n w i r e s f o u n d and check for compressor

I f compressor now operates properly, no f u r t h e r maintenance action is

operation.

r e q u i r e d on the compressor.

(6) If no broken wires are found, or if compressor fails to operate

after broken wires are repaired or replaced, refer to table 4-1 and troubleshoot

t h e compressor.

(7) If troubleshooting fails to isolate and correct the problem, pro-

ceed to step c.

c. R e p l a c e . R e p l a c e the compressor if burned out or if the compressor has

d a m a g e which would impair serviceability, R e f e r t o s t e p d f o r r e m o v a l o f d e f e c t i v e