Albany PosiDrive M&I, Руководство пользователя

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Rev. 4/9/2010 Manual #001449 14
High Speed Doors
Operation
Troubleshooting
How to Wedge a Curtain
Why would a curtain need a wedge?
A wedge is used to correct uneven curtain build, which can be evidenced by the following symp-
toms:
(a)
Bottom bar tracks to either right or left thereby causing it to jam against the guide,
(b) Bottom bar becomes out-of-level when door is in the open position,
(c) Curtain tends to 'cone' in one direction on the barrel, as the door is rolling up.
What is a wedge?
A wedge is a piece of waste rubber (can be as large as 6" square by as much as 1/2" thickness),
which is strategically placed on the drive barrel between the curtain and the barrel. It is secured
with a self-tapping screw(s).
How to determine where to fasten a wedge.
It is normal for a curtain to 'float' slightly from side to side as the door rolls up and down. Wedging
is required only when there is a severe tracking problem such as listed above.
The placement of a wedge can be determined in several ways. For example, if the bottom bar
were tracking to the left as the door is opening, then the wedge would be fastened on the right end
of the barrel. The wedge would then make the curtain roll-up faster on the right side, thus making
the bottom bar track evenly between the guides. Should the door be tracking to the right, and then
obviously the wedge should be fastened to the left end of the barrel.
It is important to identify whether a door requires a wedge or if it has been installed out-of-level.
For instance, if a door rolls down with the bottom bar continually tracking to one side, eventually
jamming near the floor, yet the curtain does not appear to 'cone', then the door is most likely out-of-
level. To remedy the problem, it may be necessary to raise one of the end plates (which have slot-
ted holes) to level the door.