TM 10-8415-208-12CAUTIONRegulator tester damage. Do not operate the regulator tester unless a test regulator is attached to thetester inlet connection. Operating the regulator tester with an open inlet connection will contaminate theflow orifice and cause the flow gauge to produce inaccurate readings. The only time the regulator testershould be operated with an open inlet connection is when the calibration is being checked and this timeshould be minimizedNOTEPerform the air flow performance test at the interval specified in the Unit PMCS table, after maintenanceas specified, or when equipment damage is suspecteda.If necessary, zero flow gauge (1) and pressure gauge (2) by turning adjusting screws (3) at the bottom frontof each gauge until indicator needles point to zero.b.Ensure flow valve (4) is closed by turning it clockwise.CAUTIONDamage to electrical equipment. Use only a grounded 110 volt AC 60 cycle electrical power source for theregulator tester to avoid damaging internal electrical componentsc.Plug electrical connection (5) into an electrical outlet.NOTECheck the calibration of and leak test the regulator tester upon receipt and every 30 days or every 50regulators tested, whichever comes first, or when inaccurate performance is suspectedd.Check the calibration of the regulator tester as follows:(1) Remove any adaptors from inlet connection (6).(2) Turn the regulator tester on by depressing on/off switch (7).(3) Open flow valve (4) until pressure gauge (2) reading is -3 inches of water.NOTEThe hand-written flow gauge value may differ from tester to tester.3-71
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