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The Lifespan® System Maintenance Guide

The Lifespan® System is a watertight, corrosion-proof, non-conductive locking rubber manhole frame and cover system that prevents stormwater from entering sanitary sewers through the top of the manhole. This is a post-installation document meant for municipalities or contractors who need to service an existing Lifespan® System installation. The guide covers how to remove a cover without damaging system components; gasket replacement instructions; locking bolt and cam replacement instructions; and how to install an extension riser for increasing road grade.

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