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3-06-2001 1:01PM FR04HERIFF CENTRAL SVCS 209 468 49.33 P.3 <br />. F <br />4. Wait until the vacuum level drops to 10' Hg or less. <br />5. Repeat steps 2 through 4 until the vacuum level stabil'u"es for 5 minutes at <br />any level between 1 Cr Hg and 15" Hg <br />6. If the vacuum level is more than 10° Hg, open the valve slightly until the <br />vacuum level is between 3.5 and 1 Cr Hg. <br />7. Record the vacuum level and the time <br />$. Hold the vacuum for the period of time shown in the following table for the <br />particular tank size being tested. <br />This is the total tank capacity. For a, compartment tank, it is the <br />combined capacity of ail compartments. <br />9. If the: vacuum level has dropped more than 2' Hg from the,stardng vacuum <br />level recorded in step 7, continue to hold the vacuum until the total vacuum <br />hold time equals the time shown in the .following table' <br />This is the total tarok capacity: For a Compartment tank, it is the <br />combined capacity of all compartments. <br />"" This time, includes the hold time in stop 8, <br />10. if the vacuum level has dropped 4" Hg or less from the starting vacuums level <br />recorded in step 7, the annular space is airtight and no additional testing is <br />required. <br />if the vacuum level has droppers more than 4' H9 from the Starting vacuum <br />level recorded in step 7, check that the testing connections are airtight and <br />repast this procedure starting with step 2. <br />If the tank faits to hold a vacuum that is 4' Hg or less from the starting <br />vacuum level recorded in step 7 after repeating this procedure, contact the <br />tank manufacturer. <br />F 1g E n W ? 1! <br />�! I <br />1 — <br />02/23/01 <br />** .TOTAL PRGE.03 ** <br />