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PREVWAIM MUNI riAKE Annuaily, Inspect tfie flapper In the 7150 to see that it is open by looking down the drop tubeopenFng, Testthe 71 SO drop tube seals with CARR procedure TP401.10. It the drop tube seal passes testing, no further mainte- nance is reeluired. if the drop tube Wls testing, replace the drop tube seal with OM P/N: H11931M For 4' Tubes. Rrtest the 71 SO drop tube with CANE proce- dure TP -201.10. The lower tube o%ring seal OPW PIN: H 14WM can also oe repiaced, if this does not correct the leak the 71 SO needs to be replaced. FOfi TE4c E fAif4175 WILY: The socket edaptor can be removed and poppet and float movement and function inspected without removing the vaW, See Page 17 for full testing detailsif replacement parts are needed ter testable models the fatrowhg Items are available' OPW PIN 2W141 Testable Inlet Tube S/A, 206740 Sac*et Adaptor and Cable Assembly, and 6150K [ALIT1pN: l7o nVt Insert any foreign ahjstit into drop tube if flapper is la the dosed position. Forexarn- pier a tank level mmasuring stick. This wUl damage the valve and void the Warrarrey. ALWAYS check Rapper location bofore"stiddn9' the tank. If flap par Is in the domed Phi'• U" to nk is Wier ovay- filled and you need to wait unfit the UquW level goes down ar ow 7i so o damaged a ltd needs to be re - 7750 Prrformlrn[a Speaflea>nans Tbis Overt ll Prevention Valve has bee"M r, and tested t%and met. the IbIVIOwmg Calrfomia spenfi- cations. Perkxmance Requirement, Leak rate to be fess than or equal to D.17 CFH02.0" WL Taryme spadfiokrem" 7apWe Screws, ! 10.24 thread cutting 20 in-Ibs mini- mum to 35 in4bs maximum. Test" Models Onir, Socket Adaptor, l/4" NPT, 3.5 ft4bs (421rHbs) minimum to SA ft -lbs (fi0 irrlbs) maximum. 1MPOATANT: LaaVethe" Installationinsttp OOM and maintenanu procedures with the stttbn opera tint, {fl