Figure 4-36. Refrigeration Piping, Evaporator Section
Be sure the refrigeration system is fully discharged and purged, and that dry
nitrogen is flowing through the system at a rate of less than 1-2 cfm
(0.028 - 057 m /minute) before brazing or debrazing.
a. Replace tubing and fittings only with equal material, grade, size, length, and shape as the item removed.
b. Leak test the entire refrigeration system in accordance with paragraph 4-8 after any replacement action that
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