Glass Frame Adjustment

THIS PROCEDURE MUST BE DONE WITHOUT ANYTHING IN THE FRAME

The minor adjustment of the glass frame can be helpful if you notice any loss in vacuum pressure. You will need the assistance of at least one other person.

  • Disconnect power to the unit.
  • Open the glass frame.
  • Use a screwdriver to loosen (but not remove) the cap on the lifts arm’s knuckle attached to the glass frame. (Old style units used a clip that must be removed.)
  • Remove the knuckle from the pivot point on the glass frame only.
  • If there is more than one lift arm, repeat the previous two steps.
  • Close, but do not latch the glass frame.
  • Slightly loosen the screws in the vertical slots on one of the glass hinges. Apply pressure to the glass frame directly above the hinge. (This increases the pressure between the glass and the vacuum frame.) Tighten the screws.
  • Repeat the above step for the other hinge, applying the same equal pressure as on the previous one.
  • Finish the procedure by adjusting the two front latches that attach the single bar latching system to the vacuum frame, as follows.
    • Latch the glass frame closed.
    • Using a 5/32 allen wrench, slightly loosen the two screws on the right front latch. Adjust the latch position while applying pressure to the right front corner of the frame. (Lowering the latch will increase the pressure between the glass and the vacuum frame. Raising the latch will decrease the pressure between the glass and the vacuum frame.) Tighten the screws.
    • Repeat the above step for the left front latch, applying th same equal pressure as on the previous one.
  • Raise the glass frame to replace the lift arms.
  • Close the glass frame, and reconnect power to the unit.