Preparing your garage door
Before you begin:
1. Disable locks and remove any ropes connected to the
garage door.
2. Lift the door halfway up. Release the door. If balanced, it
should stay in place, supported entirely by its springs.
3. Raise and lower the door to check for binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
4. Check the seal on the bottom of the door. Any gap
between the floor and the bottom of the door must not
exceed 1/4 inch (6 mm). Otherwise, the safety reversal
system may not work properly.
5. The opener should be installed above the center of the
door. If there is a torsion spring or center bearing plate in
the way of the header bracket, it may be installed within
4 feet (1.2 m) to the left or right of the door center. See
page 14.
Sectional Door
One-Piece Door
To prevent possible SERIOUS INJURY or DEATH:
l
ALWAYS call a trained door systems technician if garage door
binds, sticks, or is out of balance. An unbalanced garage door
may NOT reverse when required.
l
NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, ALL of
which are under EXTREME tension.
l
Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installation and operating garage door
opener to avoid entanglement.
l
DO NOT install on a one-piece door if using devices or
features providing unattended close. Unattended devices and
features are to be used ONLY with sectional doors.
To prevent damage to garage door and opener:
l
ALWAYS disable locks BEFORE installing and operating the
opener.
l
ONLY operate garage door opener at 120 V, 60 Hz to avoid
malfunction and damage.
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