Preparation; Safety Symbol And Signal Word Review; Check The Door; Tools Needed - Chamberlain Merik LiftMaster 7511LMK Manual De Instrucciones

Preparation

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 strict
accordance with the instructions and warnings
contained in this manual.
When you see these Safety Symbols and Signal
Words on the following pages, they will alert you to
the possibility of serious injury or death if you do
not comply with the warnings that accompany them.
The hazard may come from something mechanical
or from electric shock. Read the warnings carefully.
Mechanical
Electrical
When you see this Signal Word on the following
pages, it will alert you to the possibility of damage to
your garage door and/or the garage door opener if
you do not comply with the cautionary statements
that accompany it. Read them carefully.

Check the Door

To prevent possible SERIOUS INJURY or
DEATH:
ALWAYS call a trained door systems
l
technician if garage door binds, sticks,
or is out of balance. An unbalanced
garage door may NOT reverse when
required.
NEVER try to loosen, move or adjust
l
garage door, door springs, cables,
pulleys, brackets or their hardware,
ALL of which are under EXTREME
tension.
Disable ALL locks and remove
l
ALL ropes connected to garage door
BEFORE installation and operating
garage door opener to avoid
entanglement.
To prevent damage to garage door and
opener:
ALWAYS disable locks BEFORE
l
installing and operating the opener.
ONLY operate garage door opener at
l
120V, 60 Hz to avoid malfunction and
damage.
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 6.
Torsion
Extension
OR
Spring
Spring
1

Tools Needed

5/32
3/16
5/16
1/2
1/4
5/8
9/16
7/16
7/16