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ENVIRONMENTAL HEALTH <br />CEPARTMIENT <br />Proper tapering tolerances are set at the factory. However, it is <br />recommended the tool settings be checked prior to tapering <br />pipe. To compensate for wear of the grinding drum, the man- <br />drels can be field adjusted. Refer to the tool operating instruc- <br />tions for field adjustment procedures. <br />Taper Lengths <br />The tapering tools will pro- <br />duce a field -made taper that <br />inserts into the same bell to <br />±'v (3 mm) tolerance when <br />compared to a factory -made <br />tapered spigot. The angle for <br />properly made field tapers for <br />214" (50-100 mm) diameter <br />pipe should be 1'/. degrees, <br />All tapering tool settings <br />be checked at the begins <br />each job. <br />Warning: When taperin <br />with a 2000 or 3000 <br />power tool, DO NOT rota <br />with your hand over the <br />the pipe as this could re <br />serious injury. Place both <br />firmly around the pipe an( <br />counter clockwise. Keep a firm grip on the pipe at all times <br />and keep moving in a constant motion. If you loosen your grip <br />on the pipe, the grinding drum could grab the pipe and spin <br />it backwards resulting in the pipe being locked up on the tool <br />and possibly causing injury. <br />Several third party power tapering tools are available for use <br />with FGS piping systems. It is the tool operator's responsibility <br />to ensure that the tool being used is reproducing a field -made <br />taper that is within- --- <br />the tolerances o, <br />a factory -made ta- <br />pered spigot. <br />Pipe Size <br />in mm <br />Taper Length <br />in mm <br />12 <br />