TUBING AND FITTINGS. - TM-5-4120-383-140249

TM5-4120-383-14

5-32.

COMPRESSOR.-Continued

(5) Swing four access covers into place and tighten screws.

(6) Braze tube connections in accordance with paragraph 5-13.

(7) Replace dehydrator.

(Not necessary if replaced after

refrigerant system cleaning and purging.)

(8) Connect P10 connector.

(9) Leak test newly connected joints and all connections in

the area.

(10) Install top rear cover (para 4-11).

(11) Evacuate and charge the refrigeration system in

accordance with paragraphs 5-15 and 5-16.

TUBING AND FITTINGS.

The refrigeration system contains a number of pieces of copper

tubing in a variety of material grades, sizes, lengths, and shapes,

and a number of elbows, tees and adapters in several sizes.

Observe the following when replacing any piece of tubing or fitting

in the system:

Be sure the refrigeration system is fully discharged

and purged, and that dry nitrogen is flowing through

the system at a rate of 1-2 cfm (0.028 - 0.057

m /minute) before brazing or debrazing.

Test/Replace.

a. Replace tubing and fittings only with equal material, grade,

size, length, and shape as the item removed.

Leak test the entire refrigeration system in accordance with

paragraph 5-14 after any replacement action that required brazing.

c. Replace the dehydrator and leak test the dehydrator flare

fittings as the final step in any maintenance action that required

the refrigeration pressure system to be opened.

Evacuate and charge the refrigeration system in accordance

with paragraphs 5-15 and 5-16 after all other maintenance actions

are completed.

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