TM 5-4310-387-14(4)Pump the cleaning solution through the pipe/tubing for 30 minutes at a rate listed in table 4-4 using thesolution pump, and maintain constant temperature at all times. It may be necessary with some piping configurations tocap or plug some openings and alternate with others to maintain even flow of cleaning solution to all segments of thepipe. If you run out of cleaning solution prior to the 30 minutes listed, prepare another volume of cleaning solution.Table 4-4. Cleaning Solution Flow Rate.Tube Size (inches)GPMPipe Size (inches)GPM1/4 (0.6 cm)1/21/4 (0.6 cm)23/8 (1.0 cm)23/8 (1.0 cm)31/2 (1.3 cm)3 3/41/2 (1.3 cm)5 1/23/4 (1.9 cm)6 3/4¾ (1.9 cm)9 1/21 (2.5 cm)12 1/21 (2.5 cm)15 1/21 1/4 (3.1 cm)231 1/2 (3.8 cm)352 (5.1 cm)50(5)Pump hot distilled or deionized water through the system to rinse until all visible traces of cleaning solutionare removed.(6)Draw 10 mL sample. Agitate to observe for soap bubbles. If any soap bubbles are present, repeat step(5)until no bubbles are observed.(7)Blow dry parts or components with clean, dry, oil-free nitrogen (preferably heated to 200 degrees F (93.3degrees C)) until all visible signs of water are absent. Maintain process for 1 to 2 hours after initial purge.(8)Double bag and seal or tape closed all components and ends of pipe or hoses with plastic until ready forreinstallation.c. Hoses shall be cleaned as specified in paragraph 4-41.4-43. Cleaning Component Soft Goods. The following isopropyl alcohol method is provided for the cleaning of thesoft goods and aluminum parts of system components. The method for non-ionic detergent is the same procedure asthat in paragraph 4-41.CAUTIONEnsure ventilation is adequate and avoid breathing vapors.Personnel should wear chemical protective gloves to prevent skin irritation when contact withisopropyl alcohol is necessary.4-83
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