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6 Maintenance <br />NOTICE: <br />Surplus grease can cause the impeller to become loose. Remove surplus grease <br />from conical and/or cylindrical surfaces of shafts and/or sleeves. <br />2. Mount the impeller: <br />a) Fit the conical sleeve onto the shaft. <br />b) Fit the cutting wheel into the impeller. <br />c) Fit the outer sleeve onto the lubricated impeller screw. <br />d) Fit the impeller with the cutting wheel onto the shaft with the impeller screw. <br />Do not tighten the impeller screw. <br />3. Adjust the impeller: <br />a) Use a straightedge and a vernier to measure the distance between the vanes of the <br />impeller and the shoulder for the pump housing on the oil housing bottom. <br />Pressure class <br />Phase <br />Hz <br />Distance <br />lT <br />1 <br />60 <br />43.5±0.3 mm <br />(1.71±0.01 in.) <br />LT <br />3 <br />50,60 <br />46.0.t0.3 mm <br />(1.81±0.01 in.) <br />HT <br />1,3 <br />50,60 <br />43.5±0.3 mm <br />(1.71t0.01 in.) <br />b) Slide the impeller onto the shaft until you reach the correct distance. <br />58 Flygt 3102 Installation, Operation, and Maintenance Manual <br />