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PREVENTATIVE MAINTENANCE Annually, inspect the flapper in the 7150 to see that it is open by looking down the drop tube opening. Test the 7150 drop tube seals with CARB procedure TP -201.1 D. If the drop tube seal passes testing, no further mainte- nance is required. If the drop tube fails testing, replace the drop tube seal with OPW PIN: H11931 M for 4" Tubes. Re -test the 7150 drop tube with GARB proce- dure TP -201.1 D. The lower tube o -ring seal OPW PIN: H14840M can also be replaced. 1f this does not correct the leak the 7150 needs to be replaced. FOR TESTABLE MODELS ONLY: The socket adaptor can be removed and poppet and float movement and function inspected without removing the valve. See Page 17 forfull testing details. If replacement parts are needed for testable models the following items are available: OPW PIN 206741 Testable Inlet Tube 51A, 206740 Socket Adaptor and Cable Assembly, and 61 SOK CAUTION: Do not insert any foreign object into drop tune if flapper is in the closed position. For exam- ple, a tank level measuring stick. This will damage the valve and void the Warranty. ALWAYS check flapper location before "sticking" the tank. If flap- per is in the closed position, the tank is either over- filled and you need to wait until the liquid level goes down or the 71 SO Is damaged and needs to be re - 7150 Performance Specifications This overfill Prevention Valve has been manufactured and tested to, and met, the following California specifi- cations. Performance Requirement: Leak rate to be less than or equal to 0.17 CFH@2.W W.C. Torque Specification Taptite Screws, #10-24 thread cutting, 70 in -lbs mini- mum to 35 in -lbs maximum. Testable Models Only; Socket Adaptor, 114" NPT, 3.5 ft -lbs 02 in -lbs} minimum to 5.0 ft -lbs (60 in -lbs) maximum. IMPORTANT: Leave these installation instructions and maintenance procedures with the station opera- tor. 18