Wedge Adjustment Guide

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  2. Heavy Duty Penstock
  3. Installation
  4. WEDGE ADJUSTMENT

    All wedges are correctly adjust in factory. Due to the miss-handling or misalignment during installation, re-setting of the wedges is always required after installation.


    Step-by-Step Wedge Adjustment Process:

  1. Loosen adjusting screw locking nut and then loosen the adjusting screw as well. As photo SW1.
  2. Loosen wedge locking nut as photo SW2.
  3. Close the gate so that the seat surface at gate is align to the seat surface to the frame.
  4. Tighten both adjusting screws until proper seat is attained.
  5. Tighten wedge locking nuts.
  6. Tighten adjusting screws lock nuts.
  7. Check the movement of the gate, is too tight gate position, the wedges request readjust wedges again.

    Top/BOTTOM wedges adjustment:

  1. Loosen wedge locking screw nut slightly as photo TW1 & BW1.
  2. Loosen adjusting screw lock nut wedge locking nut and tighten the adjusting screw until proper seating is attained. as photo TW2 & BW2.
  3. Tighten wedge locking nuts.
  4. Tighten adjusting screws lock nuts.
  5. After the wedges has adjusted, check the wedge surface one by one with 0.1mm feeler gauge.
  6. Check the seating surface with 0.1mm feeler gauge as well to make sure the gauge can’t insert to the seating surface (FG1).
  7. If the feeler gauge can insert at the seating surface, readjust the wedges is require.
  8. Make sure the penstock can only start the operation when it pass all the feeler gauge checking.