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Safety Symbol and Signal Word Review
This garage door opener has been designed and tested to offer safe service provided it is installed,
operated,maintained and tested in strictaccordance with the instructions and warnings contained in this
manual.
When you see these SafetySymbolsand Signal Wordson the following pages,they will alert you to the
possibility of serious injury or death if you do notcomply with the warnings that accompanythem. The
hazard may come from something mechanical or from electricshock.Read the warnings carefully.
Mechanical
Electrical
When you see thisSignal Word on the following pages, itwill alertyou to the possibilityofdamage to
your garage door and/or the garage door opener if you do notcomply with the cautionary statementsthat
accompanyit. Read them carefully.
Check the Door
To prevent possible SERIOUS INJURY or DEATH:
l ALWAYS call a trained door systemstechnician if garage door binds,sticks,or is outof balance.
An unbalanced garage door may NOT reverse when required.
l NEVER try to loosen,move or adjust garage door, door springs,cables,pulleys,bracketsor 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.
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 Hzto avoid malfunction and damage.
1. Disable locksand remove any ropes connected to the garage door.
2. Lift the door halfway up. Release the door. If balanced,itshould stayin
place, supported entirely by itssprings.
3. Raise and lower the door to checkfor binding or sticking. If your door
binds, sticks,or is outof 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 notexceed 1/4 inch (6 mm). Otherwise,
the safetyreversal 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 leftor right of the
door center. See page 11.
Torsion
Spring
Extension
Spring
OR
Preparation
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