Chamberlain 3850 Garage Door Opener User Manual


 
2
Introduction 2-5
Safety symbol and signal word review . . . . . . . . . . . . . .2
Preparing your garage door . . . . . . . . . . . . . . . . . . . . . . .3
Tools needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Carton inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Hardware inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Assembly 6-7
Attach the rail to the motor unit . . . . . . . . . . . . . . . . . . . .6
Set the belt tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Attach the belt cap retainer . . . . . . . . . . . . . . . . . . . . . . .7
Installation 7-22
Installation safety instructions . . . . . . . . . . . . . . . . . . . . .7
Determine the header bracket location . . . . . . . . . . . . . .8
Install the header bracket . . . . . . . . . . . . . . . . . . . . . . . .9
Attach the rail to the header bracket . . . . . . . . . . . . . . .10
Position the opener . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Hang the opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Install the control console . . . . . . . . . . . . . . . . . . . . . . .13
Install the battery backup (optional) . . . . . . . . . . . . . . . .14
Install the lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Attach the emergency release rope and handle . . . . . .15
Electrical requirements . . . . . . . . . . . . . . . . . . . . . . . . .15
Install the Protector System
®
(Safety Sensors) . . . . .16-18
Fasten the door bracket . . . . . . . . . . . . . . . . . . . . . .19-20
Connect door arm to trolley . . . . . . . . . . . . . . . . . . .21-22
Adjustment 23-25
Program the travel limits . . . . . . . . . . . . . . . . . . . . . . . . .23
Setting the force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Test the safety reversal system . . . . . . . . . . . . . . . . . . .25
Test the Protector System
®
(Safety Sensors) . . . . . . . . .25
Operation 26-32
Operation safety instructions . . . . . . . . . . . . . . . . . . . . .26
Using your garage door opener . . . . . . . . . . . . . . . . . . .26
Using the wall-mounted control console . . . . . . . . . . . . .27
To open the door manually . . . . . . . . . . . . . . . . . . . . . . .28
Battery Backup (optional) . . . . . . . . . . . . . . . . . . . . . . . .29
Care of your garage door opener . . . . . . . . . . . . . . . . . .30
Having a problem? (Troubleshooting) . . . . . . . . . . . . . . .31
Diagnostic chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Programming 33-34
To add or reprogram a hand-held remote control . . . . . .33
To erase all codes from motor unit memory . . . . . . . . . .33
3-Button remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
To add, reprogram or change a Keyless Entry PIN . . . .34
Repair Parts 35-36
Rail assembly parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Installation parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Motor unit assembly parts . . . . . . . . . . . . . . . . . . . . . . . .36
Accessories 37
Notes 38-39
Repair Parts and Service 40
Warranty 40
TABLE OF CONTENTS
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 garage
door and/or the garage door opener if you do not comply
with the cautionary statements that accompany it. Read
them carefully.
INTRODUCTION
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.
Mechanical
Electrical
WARNING
CAUTION
WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING