Laserfiche WebLink
Appendix A <br /> IMIF)ILEEMS SERVICE BULLETIN <br /> Franklin Fueling Systems S13005 Rev 2 <br /> January 20, 2009 <br /> Syphon System Testing <br /> The following procedure illustrates syphon system testing techniques on 4" pumps. <br /> Figure 1 <br /> Syphan Port <br /> Syphon Check Valve <br /> Valve "B <br /> vacuum Gauge β€” irn lig <br /> Valve "A" <br /> To Syphon Line. <br /> Test Fixture <br /> Cleof Tub r.g between Gauge and Va .β€’es is T7 <br /> When manifolded tanks are not maintaining equal product levels (i.e., loss of syphon prime) there are several <br /> possible causes: the Submersible Turbine Pump (STP) is not generating a vacuum, the syphon check valve is not <br /> holding prime when the STP is off,there is a leak in the syphon loop(i.e.,tube,fittings,or pipe),there is foreign material <br /> blocking the syphon pipe,andlorthe syphon system was not properly installed (i.e.,the syphon bar is not sloped,the <br /> syphon pipes are too short,the tanks are different diameters,the tanks are on dtfferent planes,etc.). <br /> Warning Highly flammable vapors or liquids may be present in the environment in which this equipment is <br /> installed or serviced. Installing or working on this equipment means working in an environment <br /> that presents risks of severe injury or death if instructions and standard industry practices are not <br /> followed. Follow all applicable codes governing the installation and servicing of this product and <br /> the entire system. Always lock out and tag electrical circuit breakers while installing or servicing <br /> this equipment and related equipment. Refer to the Installation and Owner's Manual of this <br /> equipment and any related equipment for complete installation and safety information. <br /> Vacuum Testina Procedure <br /> 1. Tum off the power at the load center,then lock out and tag the circuit breaker. <br /> 2. Install a test fixture into the syphon line as shown in Figure 1. <br /> 3. Run the STP with the dispenser nozzles and valve"A"closed, and with valve"l3"open. The normal vacuum reading <br /> should be 20-28"Hg. If the vacuum is normal,continue with Step 4. If there isn't any vacuum or it is somewhat less <br /> than 20"Hg,there is the possibility of blockage in the STP syphon passages. <br /> Note: Vacuum readings should be taken without any product delivery. Also, check if the Pump Motor Assembly is <br /> producing correct pressures. <br /> 4. To remedy abnormal vacuum conditions, remove the 318"plug from the manifold discharge head (see Figure 3) and <br /> unscrew the brass Syphon Jet using a large standard screwdriver. Pull the Syphon Jet out and clean it, making sure <br /> that the Syphon Jet only allows for downward flow when installed. Before reinstalling the Syphon Jet, ensure that the <br /> Syphon Port and the Vapor Return Tube have open passages by using a stiff wire or other similar device to check. <br /> Replace or reinstall the Syphon Jet and 318"plug.Check for normal vacuum. If the passages are clear and the vacuum <br /> is still abnormal, check the STP Extractable 0-rings for damage and make sure that the Vapor Return Tube is not <br /> pinched. To check the Vapor Return Tube,remove the STP Extractable and repair as necessary(see Figure 2). If the <br /> condition has been corrected, continue with the next step to test the remaining syphon system. If abnormal vacuum <br /> conditions continue,contact FFS Petro Technical Support. <br /> 9-19 <br /> CARH Approved 10M 9-Liquid Condensate Trap-EXECutiVe Orders VR-201 and VR-202 <br />