Chamberlain LiftMaster Professional Security+ 3800 User Manual

Owner’s Manual
■ Please read this manual and the enclosed safety materials carefully!
■ Fasten the manual near the garage door after installation.
■ The door WILL NOT CLOSE unless The Protector System
®
and cable tension monitor are
connected and properly aligned.
■ Periodic checks of the opener are required to ensure safe operation.
■ The model number label is located behind the hinged door of your opener.
GARAGE DOOR OPENER
Model 3800
For Residential Sectional Doors With
Torsion Assemblies Only
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
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Chamberlain LiftMaster Professional Security+ 3800 Specifications

General

Brand	Chamberlain
Model	LiftMaster Professional Security+ 3800
Category	Garage Door Opener
Language	English

Summary

Planning

Preparing Your Garage Door

Assembly Steps

Attach Collar to Motor Unit

Guides attaching the collar to the motor unit shaft.

Attach Mounting Bracket to Motor Unit

Details attaching the mounting bracket to the motor unit.

Installation Process

Position the Opener

Instructions for correctly positioning and mounting the opener.

Attach Emergency Release Rope and Handle

Describes how to attach the emergency release rope and handle.

Install Power Door Lock

Details the process of installing the power door lock mechanism.

Attach Cable Tension Monitor (Required)

Explains how to install the cable tension monitor for slack detection.

Install the Control Console

Install Remote Light

Electrical Requirements

Mount the Battery Backup Unit (BBU)

Install The Protector System®

Installing Safety Reversing Sensor Brackets

Safety Reversing Sensors

Mounting and Wiring Sensors

Aligning Safety Reversing Sensors

Troubleshooting Safety Reversing Sensors

Adjustment Procedures

Program Travel Limits and Set Force

How to set door travel limits and adjust opening/closing force.

Testing Safety Systems

Verifies safety reversal, Protector System®, cable tension monitor, and power lock.

Operation

Important Safety Instructions

Critical safety guidelines for operating the garage door opener.

Using Your Garage Door Opener

Using the Wall-Mounted Control Console

Care of Your Opener

Having a Problem? (Troubleshooting)

Common Opener and Remote Issues

Addresses issues like non-operation, console/remote problems, and short range.

Diagnostic Chart

Flash Code Error Indicators

Interprets flash codes for troubleshooting sensor, wiring, or motor issues.

Programming

Add or Reprogram Hand-held Remote

Programming Keyless Entry PIN

Reprogramming Work Light