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Need help?Do you have a question about the Sears 39.18205SR - 1/2 HP and is the answer not in the manual?
Read all safety alert symbols and instructions carefully for safe operation.
Ensure the garage door is balanced and avoid adjusting tensioned parts.
Regularly test the safety reverse system for proper operation.
Remove jewelry and loose clothing before installation or servicing.
Operate opener only when door is visible and unobstructed, keep children away.
Overview of light, disconnect, motor, safety system, auto-reconnect.
Details on digital radio controls and easy limit adjustments.
Technical details of the motor and drive mechanism.
Safety features, control specs, and physical dimensions.
How to activate the opener and operate the door manually.
Details on opener light function and trolley lockout.
Includes key lock, key switch, digital entry, and transmitters.
Covers light controls and door clearance brackets for specific needs.
General care, limit/force adjustments, and safety system importance.
Care for transmitters and chain tension adjustment.
Monthly maintenance tasks including door operation and safety tests.
Semi-annual chain tension and annual lubrication checks.
Steps to assemble the three Tee rail sections correctly.
Warning about tightening lock nuts for proper rail section positioning.
How to position and fasten the cable pulley bracket securely.
Procedure for inserting and securing the trolley on the rail.
Steps for mounting the opener onto the Tee rail using correct screws.
Installing the screw to stop the trolley in its designated position.
Attaching chain/cable to trolley, routing around pulley, and engaging sprocket.
Connecting chain to shaft and attaching the sprocket cover.
Instructions for tightening the chain/cable to the correct tension.
Instructions for positioning and installing the header bracket for these door types.
Requirement to rigidly fasten the header bracket, reinforcing wall if needed.
Instructions for positioning header bracket for doors without track.
Determining header bracket height and fastening reference.
Positioning opener and connecting Tee rail to header bracket.
Positioning the opener using a 2x4 for sectional and tracked doors.
Positioning the opener for one-piece doors without track based on distance.
Warning against resting opener on lightweight or windowed doors.
Instruction to securely fasten the opener to a structural support.
Illustrates various ways to install hanging brackets for support.
How to lift and fasten the opener to the installed hanging brackets.
Guidelines for placement, wire preparation, and connection.
Securing the button and routing the bell wire to the opener.
Connecting bell wire to opener terminals and antenna.
Installing the light bulb and lens into the opener.
Safety warning and procedure for attaching the release rope and handle.
Adjusting handle height and properly sealing rope ends.
Safety checks, code compliance, and voltage requirements before connecting power.
Requirements for plugging in or permanently wiring the opener.
Detailed steps for permanent wiring, including power disconnection and grounding.
Warning to reinforce lightweight/metal doors before attaching bracket.
Procedure for fastening the door bracket and plate on sectional doors.
Procedure for fastening the door bracket and plate on one-piece doors.
Instructions for connecting the door arm to the trolley for sectional doors.
Attaching straight and curved arm sections and joining them.
Assembling door arm sections and connecting to trolley for one-piece doors.
Detailed procedures for adjusting open and closed door limits.
Explains limit settings, door behavior, and the adjustment process.
Guide for increasing UP/DOWN travel for incomplete opening/closing.
Addresses issues with door reversal during closing or in the fully closed position.
Warnings and guidelines for using force adjustment controls correctly.
Procedures for testing and adjusting UP and DOWN force settings.
Step-by-step guide to testing the safety reverse system with an obstacle.
How to adjust limits and forces for correct reversal response.
Emphasizes the critical nature of the test and regular re-testing.
Instructions for setting and matching transmitter and receiver codes.
Guidelines for safe operation and using transmitters with multiple receivers.
Addresses problems like opener not operating, transmitter/button failures, and short range.
Solutions for unintended door movement and incomplete opening/closing.
Addresses door reversing for no reason and opener light problems.
Solutions for opener straining, motor hums, and disturbing noise.
Procedures for power failure operation and addressing chain drooping.
Steps and required details for ordering repair parts from Sears.
Outlines the 90-day full warranty and limited part replacement warranty.
Specific warranty coverage for 1/2 HP and 1/3 HP motors.
General| Brand | Sears |
|---|---|
| Model | 39.18205SR - 1/2 HP |
| Category | Garage Door Opener |
| Language | English |
