standards / manuals / guidelines for small hydro development - AHEC
standards / manuals / guidelines for small hydro development - AHEC
standards / manuals / guidelines for small hydro development - AHEC
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B. Coupling• Force of tightening of all bolts should be identical• Elongation of bolts, required to ensure proper tightening• Soundness of flange connection is checked by feeler gauge of 0.03 mmthicknessIII.Setting Elevation of Thrust Bearing‣ Elevation of upper bracket should be such that the runner is at desired level‣ Allowance <strong>for</strong> deflection of upper bracket due to weight of rotating parts and initialthrust should be taken into account.‣ Mount thrust bearing on upper bracket‣ Check perpendicularity of thrust collar with shaft‣ Set elevation of bearing, by providing shims under flexible supportFig 5: Position of Dial Indicators<strong>AHEC</strong>/MNRE/SHP Standards/ E&M Works – Guidelines <strong>for</strong> Operation and Maintenance of Small Hydropower Station 61
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