Chamberlain Liftmaster Security+ 3900PLD User Manual

Owner’s Manual
■ Please read this manual and the enclosed safety materials carefully!
■ Fasten the manual near the 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 operator are required to ensure safe operation.
■ The model number label is located behind the hinged door of your operator.
■ Do NOT exceed 10 complete cycles of door operation per hour.
DOOR OPERATOR
Model 3900PLD
For Light Duty Commercial Use Install On
Sectional Doors With Torsion Assemblies Only
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
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Installation Date
2 YEAR WARRANTY

Chamberlain Liftmaster Security+ 3900PLD Specifications

General

Brand	Chamberlain
Model	Liftmaster Security+ 3900PLD
Category	Garage Door Opener
Language	English

Summary

LiftMaster 3900PLD Owner's Manual

Introduction and Safety Notes

Key initial instructions and safety warnings for installation and operation.

Installation Planning

Site Requirements and Compatibility

Details on door compatibility, clearance, and electrical outlet requirements.

Installation Preparation

Door Preparation and Tools

Steps to prepare the door and a list of required tools for installation.

Product Specifications

Electrical requirements and operational limits of the door operator.

Parts and Inventory

Carton Contents

List of items included in the operator's carton.

Installation Hardware

Specific hardware components provided for installation.

Operator Assembly

Attach the Collar to the Operator

Securing the collar to the motor unit shaft for proper operation.

Attach Mounting Bracket to Operator

Mounting the bracket to the operator unit for installation.

Operator Installation

Positioning the Operator Unit

Sliding and securing the operator onto the torsion bar.

General Installation Warnings

Critical safety instructions to follow during installation.

Safety and Security Installation

Install Emergency Release Mechanism

Attaching the release rope and handle for manual door operation.

Install Power Door Lock

Securing the optional power door lock for manual opening prevention.

Safety System Installation

Install Cable Tension Monitor

Connecting the cable tension monitor for door slack detection.

Control Station Installation

Install Single Button Control Station

Mounting the wall-mounted control station for operator activation.

Light Installation

Install Remote Work Light

Mounting and connecting the optional work light for the operator.

Electrical Installation

Electrical Requirements and Connections

Understanding plug type, outlet needs, and permanent wiring options.

Power System Installation

Mount Standby Power Unit (SPU)

Installing the optional backup power unit for the operator.

Safety Reversing Sensor Installation

Install Protector System®

Mounting and aligning the safety reversing sensors.

Safety Sensor Mounting

Bracket Mounting Options

Methods for mounting safety sensor brackets (track, wall, floor).

Safety Sensor Wiring and Alignment

Wire and Mount Safety Sensors

Connecting wires and fastening sensors to brackets.

Aligning Safety Reversing Sensors

Ensuring proper alignment of sensor eyes for correct operation.

Adjustment and Calibration

Program Travel Limits

Setting the open and close positions for the door.

Force Adjustment

Set Door Operator Force

Adjusting the force required to open and close the door.

Safety System Testing

Test Safety Reversal System

Verifying the door reverses upon contact with an obstruction.

Test Protector System®

Ensuring the safety reversing sensors function correctly.

System Testing and Manual Operation

Test Cable Tension Monitor

Verifying the cable tension monitor's activation and indicator.

Manually Open and Close Door

Procedures for using the emergency release and manual operation.

Door Operator Operation

Safe Operation Guidelines

Critical safety instructions for operating the door operator.

How to Use Your Operator

Steps for activating the door operator using the control station.

Operator Maintenance

Monthly Maintenance Checks

Regular checks for balance, adjustments, and safety reverse tests.

Annual Maintenance

Lubrication of door components and operator.

Troubleshooting Common Issues

Operator Not Responding

Diagnosing issues when the operator does not move.

Door Operation Problems

Addressing problems like partial opening or reversal.

Diagnostic Error Codes

Interpreting Diagnostic Flashes

Understanding indicator light flashes for system issues.

Remote Control Programming

Add or Program Remote Controls

Pairing hand-held remotes with the operator unit.

Erase All Remote Codes

Clearing all previously programmed remote control codes.

Keyless Entry Programming

Program Keyless Entry PIN

Setting up a PIN for external access to the operator.

Set Temporary PIN

Creating temporary PINs for visitors or service personnel.

Remote Light Programming

Program Remote Work Light

Pairing the optional work light with the operator remote.

Repair and Replacement Parts

Installation Parts List

Identification of parts included with the operator.

Motor Unit Assembly Components

Breakdown of parts within the motor unit assembly.

Optional Accessories

Extension Brackets and Keyless Entry

Details on accessory parts like extension brackets and keyless entry systems.

Standby Power and Mounting Kits

Information on optional standby power units and alternate mounting kits.

Service and Support

LiftMaster Service Information

Contact information for installation and service support.

Ordering Repair Parts

Guidelines for identifying and ordering replacement parts.