CONDENSER COIL SECTION.

TM 5-4120-364-13

(2) Inspect.

Inspect fan motor for loose wire connections, frayed or

b u r n e d wires or other evidence of damage which would impair serviceability.

( 3 ) T e s t , C h e c k continuity o f rotor windings for open windings or wind-

i n g s shorted to motor frame, If any of t h e s e c o n d i t i o n s a r e f o u n d , o r i f m o t o r b i n d s

i n d i c a t i n g defective bearings, replace motor.

(4) Replace.

( a ) Position replacement fan motor (9) on base (8) and secure with

k n i t s (7), lockwashers (6) and nuts (5). Do not tighten nuts (5) at this time.

( b ) Connect ground wire (3) to motor capacitor mounting screw and to

frame.

( c ) P l a c e f a n h o u s i n g s ( 2 5 , f i g u r e 3-11) over rotor shaft on each side

o f rotor and secure with screws (9, 2 0 , 22), washers (7, 17, 18) and nuts (6, 16).

( d ) Match direction of rotation arrows on fans with arrows on fan

h o u s i n g s and slide fans on to motor shaft. Position fans in the housings so that they

a r e centeerd in the housings. T i g h t e n s e t s c r e w s ( 2 6 ) i n f a n s t o s e c u r e f a n s t o m o t o r

s h a f t . Tighten motor mounting nuts (5, figure 3-12) to secure rotor to frame and base.

(e) Connect motor leads to terminal board. Refer to electrical wiring

d i a g r a m figure 3-2.

(f) Check direction of rotation of the fan motor. The condenser fan

m o t o r must be wired for counterclockwise rotation. Direction is determined by looking

a t motor terminal end. Replacement motors are shipped wired for clockwise rotation.

T o r e v e r s e d i r e c t i o n o f r o t a t i o n , r e v e r s e the red and black leads inside motor junc-

t i o n box. After the motor has been installed and wired, energize unit to verify pro-

p e r rotation. Direction of rotation arrows are marked on both the fans and the fan

housings.

( g ) Attach rings (15, figure 3-11) to housings (25) with screws (13)

and washers (14).

( h ) Connect pipe (5) to hose (4) with clamp (2).

( i ) R e f e r t o f i g u r e 3 - 9 a n d a t t a c h f r o n t , r e a r and end panels by turn-

i n g fasteners (8) one-quarter turn clockwise and installing screws (22) and washers

(23).

g . Refrigerant Sight Glass. Organizational maintenance of the sight glass is

l i m i t e d to checking the refrigerant through the sight glass. The refrigerant should

appear as a clear blue liquid. (Check color code on sight glass cap). If bubbling,

fogging, or a pink color appears, report the condition to direct support maintenance.

CONDENSER COIL SECTION.

3-12.

a. Covers, Panels and Frame.

(1) Removal. R e m o v e the covers and panels by turning the fasteners (9,

figure 313) one-quarter turn counterclockwise.

3-25