Chamberlain 8360 - Preparation; Safety Symbol and Signal Word Review; Check the Door

2
Safety Symbol and Signal
Word Review
This garage door opener has been designed and
tested to offer safe service provided it isinstalled,
operated, maintained and tested in strict
accordance with the instructions and warnings
contained in this manual.
When you see these SafetySymbols and Signal
Words on the following pages,they will alertyou
to the possibilityof serious injury or death ifyou
do not comply with the warningsthat accompany
them. The hazard may come from something
mechanical or from electric shock.Read the
warningscarefully.
Mechanical
Electrical
When you see this Signal Word on the following
pages, it will alert you to the possibilityof damage
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
1. Disable locksand remove any ropes
connected to the garage door.
2. Liftthe door halfway up. Release the
door.If balanced, it should stayin
place,supported entirely byitssprings.
3. Raise and lower the door to checkfor
binding or sticking. Ifyour door binds,
sticks,or is outof balance, call a trained
door systems technician.
4. Check the seal on the bottom ofthe
door.Any gap between the floor and
the bottom of the door mustnot exceed
1/4 inch (6 mm). Otherwise, the safety
reversal system may notwork properly.
5. The opener should be installed above
the center of the door. Ifthere is a
torsion spring or center bearing plate
in the way ofthe header bracket, it may
be installed within 4 feet (1.2 m) to the
leftor right of the door center.See
installing the Header Bracketsection.
Torsion Spring
Extension Spring
To preventpossible SERIOUSINJURYor
DEATH:
• ALWAYS call a trained door systems
technician if garage door binds, sticks, or is
out of balance.An unbalanced garage
door maynot reverse when required.
• NEVER try to loosen, move or adjust
garage door, door springs,cables, pulleys,
brackets or their hardware,ALLofwhich
are under EXTREMEtension.
• Disable ALLlocksand remove ALLropes
connected to garage door BEFORE
installation and operating garage door
opener to avoid entanglement.
To preventdamage to garage door and
opener:
• ALWAYS disable locksBEFORE installing
and operating the opener.
• ONLY operate garage door opener at
120 V, 60 Hzto avoid malfunction and
damage.
Tools Needed
2
1
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
Preparation