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Step 3: Adjust the pump pressure,if necessary. <br /> IF the flow rate is: THEN: <br /> less than 10 gpm increase the pressure setting. <br /> more than 10 gpm decrease the pressure setting. <br /> 10 gpm do not change the pressure setting. <br /> Step 4:Adjust the pressure setting by turning the rotary dial inside the CPT Controller <br /> enclosure(clockwise to increase the pressure; counterclockwise to decrease the pres- <br /> sure). <br /> Step 5: Repeat this calibration test until the flow rate reaches but does not exceed 10 gpm, <br /> the maximum flow rate allowable by EPA regulations. <br /> Verifying Line-Leak Detection <br /> If you ordered the CPT with 3-gph line-leak detection from the factory,then no setup for leak <br /> detection is necessary. <br /> Red Jacket recommends three different methods for testing line-leak detectors: <br /> Apparatus to Verify Operation (AVO) <br /> Field Test Apparatus (FTA) <br /> FX Tester(FXT) <br /> All three methods can be used to confirm proper operation of the CPT's electronic line-leak <br /> detection. <br /> Each method is briefly described here. Although these tests were documented for the Red <br /> Jacket mechanical leak detectors,the procedures can be used for electronic line-leak detec- <br /> tion. <br /> Apparatus to Verify Operation (AVO) for Evaluating Basic Functions <br /> This device evaluates only the basic functions of the line-leak detector. The AVO procedure <br /> also evaluates the pumping system as well as the line-leak detector(LLD).The AVO satisfies <br /> the minimum EPA functionality check requirements for annual inspection of leak detectors. <br /> The AVO is the most common procedure for testing for leaks (the 3-gph function of leak <br /> detection). <br /> For complete instructions on the AVO testing method, see Red Jacket Bulletin RJ-21. <br />