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0 0 <br /> Field cutting and Observe the following procedures when operating the Taper Maker.Refer to Fig 5-2. <br /> tapering primary pipe • Check blade angle by using a factory taper as a guide.When properly adjusted,the <br /> (cont.) blade should be in contact with the taper over the entire taper length. If adjustment <br /> is required,loosen the blade retaining screws and adjust the blade angle with the <br /> set screw. <br /> • Note that the cutting blade has four cutting edges. <br /> • Mark the required taper length on the pipe.Refer to the taper length table below. <br /> • Insert the threaded collet shaft through the base casting and the mandrel. <br /> • Select the appropriate size collet and slide it onto the mandrel,making sure the key <br /> inside the collet engages the slot of the mandrel. <br /> • Hold the collet and turn the collet control knob clockwise until the collet begins to <br /> expand.Note that it may be necessary to adjust the cutting head to accommodate <br /> different size collets. <br /> • Insert the collet into the pipe until the back end is flush with the end of the pipe. <br /> • Expand the collet to grip the inside of the pipe by turning the collet control knob <br /> clockwise. <br /> • Lower the cutting blade until it contacts the pipe by turning the cutting head <br /> adjustment handle clockwise. <br /> • Using the ratchet handle,turn the tool clockwise,gradually lowering the cutting <br /> blade by turning the cutting head <br /> adjustment handle clockwise. <br /> Continue until a smooth taper of the <br /> Fig.5-3.Dualoy3000/L can be tapered in proper length is obtained.The thin <br /> all sizes using the Ameron Taper Maker. - edge of the completed taper should <br /> The ratchet handle makes Taper Maker be no less than 1/32 inch(0.75 mm) <br /> convenient to use in confined spaces thick. <br /> when repairing existing lines. <br /> For complete operating <br /> information,refer to the appropriate <br /> Taper Maker Product <br /> Data/Operating Instructions. <br /> Tapering with powered tapering tools <br /> Pipe in 2,3 and 4-inch sizes is most often tapered using one of several powered <br /> tapering tools.Manufacturers'names and addresses may be obtained from Ameron <br /> Taper lengths distributors.Pipe tapered with these tools should be periodically checked against a <br /> factory taper for taper length and taper angle.The correct mandrel must be used for <br /> Nominal Taper in <br /> Pipe Size Length Dualo y piping. <br /> (in) (mm) (in) (mm) <br /> 2 50 11h 38 Oil <br /> 3 80 13/4 44 <br /> 4 100 1 7A 48 <br /> 6 150 23/4 70 <br /> Fig.5-4.Pipe in Z 3 and 4-inch <br /> sizes is typically tapered using one <br /> of several powered tapering tools <br /> available from outside sources. <br /> ra <br />