Paul from SWISCO responded:
December 4, 2017
Have someone hold up the sash as high as they can. Now you bring up the spiral as close as you can to the sash. Next, hook on the charging tool, our 75-004, and turn the spiral clockwise three turns. You should feel the tension building as you turn. Do both sides and try the sash. If it slides down, raise the sash and give it another turn. I hope you have found this information useful.
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Paul from SWISCO responded:
December 5, 2017
What I mean is this: bring the spiral up into the balance tube as close as you can. It will spin. It is then that you hook the tool on and give it three additional clockwise turns.
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