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POMECO Multi -Port Spill Container Manhole Installation Instructions 3 . Remove the cover and measure the distance from the top of the tanks to the final grade . 1 . Mark off finish grade . (See Figure 1 . ) 4 . Cut the riser(s) from the underground tank so Finish Grade that both the fill and vapor risers are set below the final grade . Use the dimensions below : Spill Container Inches below grade ( L) 5 Gal . Cast Iron Base 15 '/2" Figure 1 5 Gal , Composite Base 171/2 7 . 5 Gal . Cast Iron Base 19 /2 7 . 5 Gal , Composite Base 21 '/2" 2 . Set multi -port manhole assembly (skirt , ring , and Note : Add an extra 3414 " when using an OPW cover) to the final grade position . (See Figure FSA400 Face Seal Adaptor. (See Figure 2.) 2 . ) 5 . Deburr and thoroughly clean riser pipe (s ) . Finish Grade 6 . Apply pipe dope to riser(s) . The pipe dope is to be a non-hardening , gasoline resistant , pipe thread seal compound . 7 . Install OPW FSA-400 Face Seal Adapter onto riser. ( Recommend Torque , 4 " NPT , 125 ft4s min . to 250 ft4s max . ) . Apply pipe dope to FSA400 . The pipe dope is to be a non - hardening , gasoline resistant , pipe thread seal compound . This is optional for spill containers that are on the vapor lines . 8 . Thread the spill containers on hand tight . Note : Do NOT attempt to completely tighten the Figure 2 containment bucket by using the containment bucket mounting ring at the top of the bucket . Note : It is strongly recommended that POMECO 9 . Inspect the containment bucket gasket (s ) and covers be installed with the following minimum the ring gasket for damage . Replace the clearances . Sheet metal skirts should have gasket(s ) if they are damaged . adequate clearance between the tank sump riser 10 . Apply an even bead of PISCES SL- 1100 to the sidewall and or the sump top hat. A minimum of topside of the containment bucket gasket (s) . one and a half inches clearance on all sides is (See Figure 4 . ) recommended between the POMECO skirt and the tank sump wall or the sump top hat wall . A ; 4ontCahunent SL- 1100 minimum of two inches clearance is recommended between the bottom of theinaPOMECO skirt and the horizontal surface of the � asket tank sump or sump top hat. These clearances are recommended to allow adequate water migration away from the sumps . Great careshould be used to maintain the recommended clearances when setting the rings and pouring Bucket the concrete. ( See Figure 3 . ) Gasket Figure 4 1 '/z Min 11 . Apply an even bead of PISCES SL- 1100 to the topside of the ring gasket . (See Figure 4 . ) 12 . Replace the multi-port cover, centering the riser(s) as close as possible in the containment openings . Be very careful not to move or damage the gaskets . Figure 3 POMECO Multi port Spill Container Page 2