3 Rotate the ratchet wheel to adjust the switch engagement arm
up or down as required to attain the specified tolerance.
4 Tighten the jam nut and reassemble the panel(s) in reverse
order of removal.
Adjust the door guide alignment.
The door guides are the cylindrical rods below the door. They control the
position of the door during travel.
1 Lower the door to the fully open position.
2 Check that the top of the door is parallel with the inside of the
1 Loosen the securing bolts on the bottom of the door guides.
2 Align the guides to level the door using a level bubble.
3 Raise and lower the door to check for binding.
4 Readjust only one of the guides to eliminate binding or friction.
Adjust the door cover.
The door cover should be centered in the lower face panel with an alignment
and centering clearance of 1/16 inch (1.2mm) on all sides.
(a) Loosen the two cover screws and center the lower door edge in the
(b) Loosen the cover retaining plate screws and move the cover plate
to center the upper edge of the door cover.