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�- ^ �� <br /> ` �� �l yU� - �w����^� ��� <br /> - '' ' ` ~~="' ' \� `�~�`~" `+`°- - -' ' ~-~ `=- / <br /> Maintenance Inspecting/Verifying 95% Level (Without <br /> The 708-2)OSeries Overfill Prevention Valve has no Removing from Tank) <br /> periodic maintenance requirements. FOR DIMENSIONS "4^ & ^8^: Refer to the"installation <br /> However, if the drop tube and valve assembly is removed record sheet"or re-measure and re-calculate per figure 1 <br /> from the tank (for inspection oroewico). inspect the <br /> drop tube seal for wear/damage (Figure 1S). Replace if 1, Measure Dimension ''Z^ (Figure 18) <br /> necessary. "2" (Upper drop tube flange m <br /> edge of upper tube adaptor) <br /> 2. Verify using the calculation below <br /> (Drop tube seal surface to <br /> g-1, bottom of tank) <br /> u rientation) —1 (95%Volume from tank chart) <br /> be Gasket Instal ed "B" I <br /> - (Subtract) <br /> [�.Y (114mm) (95%Shutoff level offset) <br /> Figure 16:Inspect Gasket <br /> = <br /> AdAdditionally,Additionally, if the upper or lo (Equals)tube is � <br /> unthreaded/removed from the OPV, the C-hng(o)should <br /> boreplaced (Figure 17). Same value 8s '1 <br /> indicates correct iOSC@U8Uon <br /> Inspect 0-ring <br /> M!@SUF8 <br /> ��----------------- "�r" <br /> 4�� <br /> (114 mm) <br /> Inspect O-ring ---if <br /> +-----'�U| <br /> BU| @ N Q 0 \UU <br /> Figure 18:'D��mns�m ��NYcadonA�mr�s�/��zn <br /> F�uro /7�h4neot����Am <br /> 9 <br />