REFRIGERANT SYSTEM SERVICE - (BRAZING/DEBRAZING)

TM 9-4120-430-14

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DIRECT SUPPORT MAINTENANCE

AIR CONDITIONER, COMPACT, HORIZONTAL

REFRIGERANT SYSTEM SERVICE - (BRAZING/DEBRAZING)

SERVICE (GENERAL INFORMATION, FILLER ALLOY, DEBRAZING, CLEANING

DEBRAZE JOINTS, REASSEMBLY, BRAZING)

INITIAL SETUP

Tools and Special Tools

Tool Kit, General Mechanics (Item 1, Table 2, WP 0067 00)

Tool Kit, Service, Refrigeration Unit (Item 2, WP 0067 00)

Recovery and Recycle Unit, Refrigerant (Item 5, WP 0067 00)

Mask, Air Filtering (Item 29, Table 1, WP 0069 00)

Materials/Parts

Brazing alloy (silver) (Items 5 and 5, Table 1, WP 0069 00)

Nitrogen cylinder (Item 4, Table 1, WP 0069 00)

Brazing flux (Item 7, Table 1, WP 0069 00)

Abrasive cloth (Item 8, Table 1, WP 0069 00)

Rags (Item 9, Table 1, WP 0069 00)

References

WP 0083 00 (MAC)

Personnel Required

One

Equipment Condition

Refrigeration system discharged (WP 0044 00)

Refrigeration system purged (WP 0045 00)

Main power source is disconnected

WARNING

Ensure power source is disconnected.

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.

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