Sears 139.53962SRT1, 139.53975SRT1 owner manual HOW and When to Adjust the Forces

Page 29

ADJUSTMENT STEP 2

Adjust the Force

Force adjustment controls are located on the right side panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door.

If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction. Weather conditions can affect the door movement, so occasional adjustment may be needed.

The maximum force adjustment range is about 3/4 of a complete turn. Do not force controls

beyond that point. Turn force adjustment controls with a screwdriver.

NOTE: If anything interferes with the door's upward travel, it will stop. If anything interferes with the door's downward travel (including binding or unbalanced doors), it will reverse.

HOW AND WHEN TO ADJUST THE FORCES

1.Test the DOWN (close) force

•Grasp the door bottom when the door is about halfway through DOWN (close) travel. The door should reverse. Reversal halfway through down travel does not guarantee reversal on a one-inch obstruction. See Adjustment Step 3, page 30.

If the door is hard to hold or doesn't reverse,

DECREASE the DOWN (close) force by turning the control counterclockwise. Make small

adjustments until the door reverses normally. After each adjustment, run the opener through a complete cycle.

•If the door reverses during the down (close) cycle and the opener lights aren't flashing, INCREASE DOWN (close) force by turning the control clockwise. Make small adjustments until the door completes a close cycle. After each adjustment, run the opener through a complete travel cycle. Do not increase the force beyond the minimum amount required to close the door.

2.Test the UP (open) force

•Grasp the door bottom when the door is about halfway through UP (open) travel. The door should stop. If the door is hard to hold or doesn't stop, DECREASE UP (open) force by turning the control counterclockwise. Make small adjustments until the door stops easily and opens fully. After each adjustment, run the opener through a complete travel cycle.

•If the door doesn't open at least 5 feet, INCREASE UP (Open) force by turning the control clockwise. Make small adjustments until door opens completely. Readjust the UP limit if necessary. After each adjustment, run the opener through a complete travel cycle.

Without a properly installed safety reversalsystem, persons (particularly small children) could be SERIOUSLYINJUREDor KILLEDby a closing garage door.

•Too much force on garage door will interfere with proper operation of safety reversalsystem.

•NEVERincreaseforce beyond minimum amount required to close garage door.

•NEVERuse force adjustments to compensate for a binding or sticking garage door.

•If one control (force or travel limits) is adjusted, the other control may also needadjustment.

•After ANY adjustments are made,the safety reversal system MUST be tested. Door MUST reverseon contact with one-inch high object (or 2x4 laid flat) on floor.

Force Adjustment

Controls

Right Side Panel

Adjustment Label

29

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Contents Garage Door Opener Abridor DE Puerta DE Cochera Contents Tools needed Preparing your garage doorPlanning Sectional Door InstallationIONE-PIECEDOOR with Track ONE-PIECE Door InstallationsONE-PIECEDOOR Without Track Carton Inventory Hardware Inventory Assembly HardwareInstallation Hardware Back Rails Assemble the Rail & Install the TrolleyFront Rail Fasten the Rail to the Motor Unit Install the Idler PulleyInstall the Chain/Cable Attach the Sprocket Cover Tighten the Chain To reduce the risk of severe injury or deathProceed to , Determine the Header Bracket LocationSectional Door ONE-PIECE Door with Track Floor ONE-PIECE Door Without TrackExample Ceiling Header Bracket Installation Install the Header BracketWall Header Bracket Installation Attach the Rail to the Header Bracket Sectional Door or ONE-PIECEDOOR with Track Position the OpenerHang the Opener Std instaliation Install the Door ControlAttach the Emergency Release Rope and Handle Install the Lights and LensesElectrical Requirements Important Information about Safety Reversing Sensor Install The Safety Reversing SensorGarage door track installation preferred Installing the BracketsWall installation Floor installationTroubleshooting the Safety Sensors Mounting and Wiring the Safety SensorsAligning the Safety Sensors Sectional Doors Fasten the Door BracketFinished Ceiling ONE-PIECEDOORSSectional Doors only Connect Door Arm to TrolleyMIN FastenerALL ONE-PIECE Doors Adjustment procedures, FigureAssemble the door arm, Figure Fully ClosedIf door does not open at least 5 feet Adjust the UP and Down Travel LimitsHOW and When to Adjust the Limits HOW and When to Adjust the Forces Adjust the ForceTest the Safety Reversing Sensor Test the Safety Reversal SystemAdjust TestActivate your opener with any of the following Using Your Garage Door OpenerLight Feature Using WaU.Mounted Door ControlLock Feature To Open the Door ManuallyOnce a Month Care of Your OpenerTwice a Year Once a YearHaving a Problem? To Erase All Codes From Motor Unit Memory Additional Hand.held Remote ControlFunction Remotes To Add anBe programmed Add Or Change Keyless EntryTo set a temporary PiN Installation Parts Rail Assembly PartsKEY Part Description KEY PartNot Shown Motor Unit Assembly PartsKEY Part Description Available Only through Sears Parts & Service Accessori ESRevisi6n de los simbolos y trminos de seguridad Herramientas Necesarias Preparaci6n de la puerta de su cocheraInstalacion CON UNA Puerta Seccional Planificaci6nInstalacion CON UNA Puerta Seccional Puerta DE UNA Sola Pieza Planificacibn continuaSIN Carril Puerta DE UNA Pieza CON CarrilSECURITY÷ Inventario de las cajasPulg Inventario de piezasTornillera Y Piezas Para EL Armado Rielesposteriores AL Motor Monte el riel e instale el troleLa poleaIoca Riel delanteroInstale la polea Ioca Sujete el riel al motorEN SU TAMAblO Normal Estas Piezas SE Muestran EN SLI TAMAIqO NormalTiene el trole. 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139.53975SRT1, 139.53962SRT1 specifications

The Sears 139.53962SRT1 and 139.53975SRT1 are two sophisticated garage door opener models that have gained significant attention for their innovative features and technologies. These devices represent the cutting edge of convenience and security in residential garage systems.

One of the standout features of both models is the integrated MyQ technology. This allows users to control their garage doors remotely using a smartphone app, ensuring seamless access even when they are away from home. Whether you’re on vacation or simply running errands, the ability to monitor and control your garage door from anywhere adds an unmatched level of convenience and peace of mind.

Both the 139.53962SRT1 and 139.53975SRT1 come equipped with a powerful ¾ HP motor. This robust motor provides sufficient lifting power for standard-sized garage doors, ensuring efficient and reliable operation. The powerful motor is designed to handle heavy doors with ease, making it a suitable choice for a variety of residential applications.

Safety is a critical aspect of garage door systems, and these models excel in this area. They feature advanced safety sensors that detect obstructions in the door’s path. This means that if something is in the way as the garage door closes, it will automatically reverse, preventing potential accidents and injuries.

In addition to safety sensors, both models are equipped with rolling code technology. This system enhances security by changing the access code every time the remote is used, preventing unauthorized access and potential break-ins.

Another noteworthy characteristic of these garage door openers is their quiet operation. Thanks to a specially designed belt drive system, both models minimize noise during operation, making them ideal for homes with living spaces situated above the garage.

Installation is made simpler with the inclusion of detailed instructions and user-friendly components, allowing most homeowners to set up the system with minimal hassle.

Overall, the Sears 139.53962SRT1 and 139.53975SRT1 garage door openers combine powerful performance with advanced technology, safety features, and ease of use, making them top choices for anyone looking to upgrade their garage door system.
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