Chamberlain LiftMaster LM3800A Instructions Manual page 24

Failure to comply with the following instructions may result in serious personal injury or property damage.
• Read these instructions carefully
• The garage door opener is designed and tested to offer reasonable safe service provided it is installed and operated in
strict accordance with the instructions in this manual.
These safety alert symbols mean Warning – a personal safety or property damage instruction. Read these instructions
carefully.
Keep garage door balanced. Do not let the garage
door opener compensate for a binding or sticking
garage door. Sticking or binding doors must be repaired.
Garage doors, door springs, cables, pulleys, brackets
and their hardware are under extreme tension and can
cause serious personal injury. Do not attempt to
loose, move or adjust them. Call for garage door
service.
Do not wear rings, watches or loose clothing while
installing or servicing a garage door opener.
To avoid serious personal injury from entanglement,
remove all ropes connected to the garage door
before installing the door opener.
Installation and wiring must be in compliance with your
local building and electrical codes.
Lightweight doors of fiberglass, aluminum or steel
must be substantially reinforced to avoid door
damage. (See page 3.) The best solution is to check
with your garage door manufacturer for an opener
installation reinforcement kit.
The safety reverse system test is very important.
Your garage door MUST reverse on contact with a
50mm obstacle placed on the floor. Failure to properly
adjust the opener may result in serious personal injury
from a closing garage door. Repeat the test once a
month and make any needed adjustments.
This unit should not be installed in a damp or wet
space.
Door must not extend over public byway during
operation.
Drive can NOT be used with a driven part
incorporating a wicket door (unless the drive cannot
be operated with the wicket door opened)
Children should be supervised to ensure that they
do not play with the appliance.
INTRODUCTION
Safety Symbol Review and Signal Word Review
This door operator 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.
Mechanical
Electrical
WARNING
Start by Reading These Important Safety Instructions
The Protector System must be installed when the
force at the edge of the closing door force exceeds
400N (40kg). Excessive force will interfere with the
proper operation of the Safety Reverse System or
damage the garage door.
Permanently fasten the caution label adjacent to the
wall-mounted door control control button as a reminder
of safe operating procedures.
Disengage all existing garage door locks to avoid
damage to garage door.
Install the lighted door control button (or any additional
push buttons) in a location where the garage door is
visible, at a height of at least 1.5m and out of the
reach of children. Do not allow children to operate
push button(s) or remote control(s). Serious personal
injury from a closing garage door may result from
misuse of the opener.
Activate opener only when the door is in full view,
free of obstructions and opener is properly adjusted.
No one should enter or leave the garage while the
door is in motion. Do not allow children to play near
the door.
Use manual release only to disengage the trolley and, if
possible, only when the door is closed. Do not use the
red handle to pull the door open or closed.
Disconnect electric power to the garage door opener
before making repairs or removing covers.
This product is provided with a power supply cord of
special design which, if damaged, must be replaced
by a power supply cord of the same type; such a
power supply cord may be obtained and fitted by a
specialist.
This appliance is not intended for use by persons
(including children) with reduced physical sensory or
mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person
responsible for their safety.
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.
When you see this Signal Word on the following pages, it will alert you to
the possibility of damage to your door and/or the door operator if you do
not comply with the cautionary statements that accompany it. Read them
carefully.