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TrNA&:9hootin 0 <br /> Problem: <br /> Slow Flow(STP-MLD is in the Tripped position only allowing 3 GPM or less flow rat <br /> Possible causes: e) <br /> 1• System leak (i.e., line, dispenser, STP/IST, etc.) <br /> 2. Thermal contraction <br /> 3. No time delays in dispensers or not set correctly <br /> 4. Incorrect STP-MLD version <br /> 5. Tank empty/air in lines <br /> 6. Power to STP is off or defective dispenser switch signal(hook) <br /> 7. Defective MLD <br /> Actions: <br /> 1. Visually inspect all areas for leaking product. <br /> 2. Insert a pressure gauge in shear valve. <br /> 3• Cycle the pump to confirm that the system is holding <br /> the STP/IST. If there are any system leaks, repair, then retest the system. If system has no <br /> pressure, It pressure is not holding, conduct a line test through <br /> submersible), thermal contraction may be a possible cause. Continue to the next step. <br /> 4. Test for thermal contraction per FE Petro Technical Bulletin TB-D01. If thermal contraction leaks (line or <br /> with the next step. has been verified, continue <br /> 5. Find the opening time (test cycle) of the STP-lull-D. Follow step 14 and time how long it takes from when the <br /> submersible pump is turned on until it reaches full <br /> take 2-4 seconds and 10 -20 seconds for STP ull Pump pressure. The STP-MLD and STP-MLD-D models typically <br /> MLD-EUM model, If the test time is not within these PUMP <br /> Possible that there is a line leak, air/vapor in the line or not using the correct STP-MLD model for the installatio <br /> causing the opening time to increase. Cycle the power and time the number of seconds it takes for the solenoid v 't is <br /> in the dispenser to"click"open,this is an audible indicator and usually easy to hear. This time must be approximately <br /> nthus <br /> two seconds greater than leak detector opening time. Consult dispenser manuals for solenoid time delay installation <br /> or adjustment. <br /> 6. If problems continue, contact FE Petro Technical Support at 1-800-225.9787, oon <br /> Problem:. <br /> Not catching a 3 GPH leak at 10 PSI <br /> Possible causes: <br /> I. Air/Vapor in system <br /> 2. STP-MLD installed Incorrectly <br /> 3. Using the incorrect STP-MLD version <br /> 4. Testing procedure <br /> 5. Defective MLD <br /> Actions: <br /> 1, Make sure all air/vapor in the system has been purged, see step 11. If no air/vapor is present continue with next step. <br /> 2. Make sure STP-MLD is installed correctly: <br /> a. STP-MLD must be installed in leak detector port on submersible pump manifold or adapter tee housing and <br /> make sure the O-ring is present and not damaged <br /> b. The vapor tube must be installed and vented back to the tank port from the STP-MLD <br /> C. Make sure there are not any in-line check valves between the dispenser solenoid valve and the STP-MLD <br /> d. If a manifolded system, only one submersible pump can tum on at a time during the leak testing cycle <br /> e. There must be less than 12 feet of static head in the system <br /> 3. Make sure the correct STP-MLD model is being used for the application (product and piping), see FE Petro technical <br /> bulletin T13002(i.e. Some flexible piping will require the use of the STP-MLD-E model). <br /> 4. Is the leak testing fixture calibrated correctly(3 GPH leak @ 10 PSI). Has the STP-MLD been fully tripped before testing, <br /> see step 16. <br /> 5. If problems continue, contact FE Petro Technical Support at 1.800-225-9787. <br /> NOTE <br /> If STP-MLD does not operate correctly or there are any questions concerning installation or service, contact <br /> FE Petro Technical Service at(800) 225-9787. <br /> 8 <br />