TESTING - TM-5-4120-374-130142

TM 5-4120-374-13

5-11. CONDENSER COIL (CONT)

ACTION

REMARKS

LOCATION/lTEM

H O U S I N G INTERIOR

7. Condenser Coil

Check all condenser coil tubing and sweat fittings with a

General Electric Type H-2 Halogen Test Detector (or

approved equal).

b. Calibrate the detector with a General EIectric LS-20

leak standard (or approved equal) for a pure refrigerant

leak rate of 0.1 ounce per year.

c. Mark all spots where leaks are noticed.

d. Repair leaks or replace condenser coil.

Purge system with dry nitrogen prior to soldering. Refrigerant heated

to 1200F creates phosgene gas.

a. Repair minor leaks or holes by soldering.

8. Condenser Coil

b. Use a silver solder with a 50% silver capacity and a melting

point of approximately 1160F (634.8C).

c. Straighten bent fins prior to installation.

5-30