Transformer. - TM-5-4120-356-140062

TM 5-4120-356-14

(1) Inspection

( a ) T u r n selector switch to "OFF" position and disconnect the air

c o n d i t i o n e r from the e l e c t r i c a l p o w e r s o u r c e .

(b)

R e m o v e the lower access panel, a i r i n t a k e g r i l l e a n d a i r f i l t e r .

(c)

R e f e r to figure 3-12 and remove panel from junction box.

(d)

Inspect fan relays K4 and K5 for damage which would impair

serviceability.

(2) Test. (See figure 3-17.)

( 3 ) R e p l a c e . R e p l a c e fan relays K4 and/or K5 if there is any damage

which would impair serviceability or if any failure occurs during testing. Refer to

steps (4) and (5) for removal of defective relay(s) and the installation of new re-

lay(s).

(4) Removal.

(a) Refer to figure 3-12 and remove junction box f ran unit.

( b ) Refer to figure 3-15 and remove relay K4 and/or K5.

(5)

Installation.

( a ) R e f e r t o f i g u r e 3 - 1 5 a n d i n s t a l l f a n relay K4 and/or K5.

( b ) R e f e r t o f i g u r e 3 - 1 2 a n d i n s t a l l j u n c t i o n box in unit.

( c ) R e i n s t a l l a i r f i l t e r , a i r i n t a k e grille and lower access panel.

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

electrical power source before inspect-

i n g , testing or removing the transformer.

(1)

Inspection.

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

air conditioner from the electrical power source.

(b) Loosen attaching screws and remove lower access panel.

( d ) Inspect transformer for burn-out or other damage which would

impair

serviceability.

(2)

Test.