COMPRESSOR.-Continued - TM-5-4120-383-140243

TM5-4120-383-14

5-32.

COMPRESSOR.-Continued

When a hermetic motor burns out, the stator winding

decomposes forming carbon, water and acid which

contaminates refrigerant systems. These contaminates

must be thoroughly removed from the system to prevent

repeated motor failures. Motor burn out may also

cause damage to the air conditioner electrical

system.

The following clean up procedures must be

followed in any case of compressure motor burnout.

(i) Perform removal procedure (step (3), preceding page).

(j) Remove the dehydrator (para 5-30). Do not replace with

a new dehydrator at this time.

(k) Flush the refrigerant system with refrigerant solvent

R-114 dichlorotetrafluroethane (National Stock Number 6830-00-782-

6512).

Flushing should be done under a pressure of 8 to 12 psig

(.56 to .84 kg/cm ), using a pump of approximately 1/3 horsepower.

The R-114 may be recirculated if run through a 10 micron filter.

Procedures for flushing the system are as follows:

Refer to figure 5-22 and connect the discharge line

of the pump to the tubing at point 1. Connect the

recovery line to the tubing at point 2.

Leave the

suction line service valve (point 3) closed. Cap

the tubing at points 4 and 5.

Start the pump and flush the line for approximately

10 minutes then turn the pump off.

Remove the recovery line from point 2 and cap the

tubing at point 2.

Connect the recovery line to the valve at point 3

and open the suction line service valve.

Start the pump and flush the line for approximately

10 minutes, then turn the pump off.

Disconnect the bypass solenoid valve plug P8 from

receptacle J8.

5-77