REFRIGERATION SYSTEM SERVICING (BRAZING/DEBRAZING)

TM 9-4120-425-14&P

REFRIGERATION SYSTEM SERVICING (BRAZING/DEBRAZING)

THIS WORK PACKAGE COVERS:

Service (General Information, Filler Alloy, Debrazing, Cleaning Debrazed Joints, Reassembly, Brazing)

INITIAL SETUP:

Maintenance Level

Direct Support

Tools and Special Tools

Tool Kit, General Mechanics (Item 1, Table 2, WP 0118-00)

Tool Kit, Service, Refrigeration Unit (Item 2, Table 2, WP 0118-00)

Solder, Gun Kit (Item 9, Table 2, WP 0118-00)

Mask, Air Filtering (Item 29, Table 1, WP 0121-00)

Materials/Parts

Brazing alloy (silver) (Items 5 & 6, Table 1, WP 0121-00)

Nitrogen cylinder (Item 4, Table 1, WP 0121-00)

Brazing flux (Item 7, Table 1, WP 0121-00)

Abrasive cloth (Item 8, Table 1, WP 0121-00)

Rags (Item 9, Table 1, WP 0121-00)

References

WP 0118-00 (MAC)

Equipment Condition

Refrigeration system discharged (WP 0049-00).

Refrigeration system purged (WP 0050-00).

Main power source disconnected.

WARNING

Disconnect air conditioner power supply.

WARNING

Be sure that the manifold hoses are correctly connected. BLUE Hose = Low

Pressure, RED Hose = High Pressure.

SERVICE

General Information

All tubing in the refrigeration system is copper with a finish that permits thorough cleaning. All interconnecting fittings,

such as elbows, tees, etc., are also copper. The bodies of all valves and all connections on other components are brass.

All joints, except those provided with flare fittings, are made by brazing in accordance with MIL-B-7883, except that

radiographic examination is not required.

0051-00-1