CAIRE COMPANION 1000 Technical Manual

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CAIRE COMPANION 1000 Technical Manual Manual pdf 41 page image

B-701964-00 Rev. C Performance Verification 3-3Companion 1000/T Liquid Oxygen System Technical ManualFigure 3-2: Placing Companion 1000/T Portable in Test FixtureUnit Containing Liquid Oxygen at 22 psig (152 kPa): Connect the test pressure gauge tothe oxygen outlet barbed fitting and set the flow control valve to the highest setting.Place the Companion 1000/T in the portable test fixture (Figure 3-2).3. Wet a finger with leak detector and lightly place it against the open end of the venttube located near the bottom of the unit. If bubbling occurs, refer to Section 5.9.2,Service and Repair.4. Use SNOOP liquid leak detector to test all fittings and connections. Verify that theunit maintains 22 psig (152 kPa) pressure during the leak test.5. With pressure remaining in the unit, place a small amount of SNOOP on the tip ofthe Companion 1000/T fill connector. A small amount of leakage around thepoppet of the fill connector is acceptable, provided that the total leakage rate of theunit is not greater than the NER.6. Blow dry with compressed gas the fill connector poppet and the vent valve.3.2.2 Pressure Hold TestPROCEDURE1. Set the flow control valve to 0 L/min (off).2. Warm, Empty Unit: Use the pressurizing setup (Figure 3-1) to pressurize theCompanion 1000/T until the primary relief valve vents (approximately22 psig/152 kPa). Close the vent valve and remove the pressurizing setup. Connectthe test pressure gauge to the oxygen outlet barbed fitting and set the flow controlvalve to the highest setting. Record the pressure gauge reading and the time.3. Set the flow control valve to 0 and remove the test pressure gauge from the oxygenoutlet.Perform the Pressure Hold Test only on warm, empty Portable units.Performing this test on Portable units containing liquid oxygen will yieldinaccurate results.