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Oct 26 10 09:28p Francene Escobar 20PQ954539 p•2 <br /> ..i <br /> VM1 <br /> Vaporless Manufacturing, Inc. <br /> Quality Petroleum Equipment <br /> Solutions for Over 20 Years <br /> March 28th, 2005 <br /> Adjustment of VMI Leak Detector <br /> Certain piping conditions may affect the ability of any leak detector to find a leak. They include <br /> high head pressures and high bleed-backs. High bleed-back may occur due to dips in the lines, <br /> etubbina fnr fl Itl IrA rlicnAncAm. Inno nine runs. and extremely flexible Dioe. <br /> in thi.mp etal'fc. lie I i* oina-filled <br /> d with <br /> oaunn'rer rrJ.u,la+ rn Hatt Th rnunh In Thi TrmSHion. lhe: five is bcina-filled with <br /> product and the prossure in the line is slowly rising. <br /> vvltn ane. unc rmoa wan oroauct. inti vuuty ­111 Iw,l airy, \LO , .o ,.. ra•... v..rl....•. <br /> mlgnt. Ine expansion OT Me Bald IS laaalhly G11clyy thaL is Leroy r.. : d baol< ontoythe Ical< <br /> detector piston. <br /> Naturally, steel pipe has less expansion than fiberglass pipe, and much less expansion than <br /> flexible pipe. <br /> Air pockets in the line also raise the bleed-back level, so every effort should be made to <br /> eliminate those air pockets by purging the line. <br /> If a VMI leak detector fails to find a 3 GPH leak, the leak detector is not staying at the leak <br /> sense position, but instead is going through to full flow. <br /> If, when testing the leak detector, the pressure gauge shows a starting pressure of 0 psi and <br /> continues to pump operating pressure without hesitating at leak search pressure, the piston <br /> assembly may not have completely reset. If this occurs 2 times in a row; you should (1) turn the <br /> pump off, (2) bleed the line pressure to 0 psi, (3) remove the vent line, (4) push the piston <br /> assembly down. Turn the pump on and re-test the leak detector to assure it finds a leak. <br /> Perform at least 2 additional tests to ensure the leak detector is resetting on its own. <br /> If, when testing the leak detector, it hesitates at leak search pressure but does not hold in leak <br /> search position, an adjustment to the piston assembly may be made. The purpose is to make <br /> the leak detector more sensitive to a leak. <br /> To adjust the leak detector first remove the vent line and fitting from the top of the 99 LD-2000 <br /> or LD-2200 leak detector (99 LD-3000 remove the cap). You will now be looking at the top of <br /> the piston assembly. <br /> Vaporless Manufacturing,Inc <br /> 8700 East Long Mesa Drive,Prescott Valley,Arizona 86314 <br /> 800-367-0185 928-775-5191 Fax: 928-775-5309 <br /> Email: vmiavaporless.com Website: www.vaoorless.com <br />