Craftsman 139.53978SRT owner manual @ @, Safety Reversing Sensor

Page 7

Separate all hardware from the packages in the rail carton and the opener carton, as shown below, for the assembly and installation procedures.

ASSEMBLY

@ © @

Lock Nut	Lock Washer	Nut
1/4"-20 (2)	3/8' (1)	3/8" (1)

Master

Link(2)

Bolt 1/4"-20 x 1-5/4" (2)

Chain Spreader (2)

Idler Bolt (1)

TroUey Threaded Shaft (1)

INSTALLATION

D,,,L,H,H,I,,,,,D© © 0

Hex Screw	Spacer (2)	Nut	Lock Washer	Ring
5/16'-18x7/8" (4)		5/16"-18 (8)	5/16" (7)	Fastener (3)

								I
_]	Illl	II !!!rl!l	I]ll	II I1_	Screw	]"HlJ::]:''"'"I
		5/16"-18xl-7/8"	(2)		6ABx1-1/4 ° (2)	6-32x1"	(2)	Anchors (2)
					oj			om
		Clevis Pin			CleVis Pin	Clevis	Pin	Insulated
		5/16"x1-1/2" (1)			5/16"xl" (1)	5/16"x1-1/4" (1)		Staples (10)

SAFETY REVERSING SENSOR

Carriage Bolt		Insulated
1/4"-20xl/2" (2)	Wing Nut (2)	Staples (20)

Image 7

Contents Garage Door Opener Instructions. Read the instructions carefully Start by reviewing these important safety alert symbolsYoull Need Tools Based on your particular requirements, there are SafetyClosed Position One-Piece Door without Track One-Piece Door with TrackClosed Position Section Carton Inventory@ @ Safety Reversing SensorAssembly Step Assembly Section Pages 8Fasten the Rail to the Opener Install the Idler PulleyHardware Shown Actual Size Master Link Clip-OnSpdng Unk Cap Install the Chain/Cable Attach the Sprocket Cover= Lo Tro,.y Tighten ChainDetermine Header Bracket Location Installation Section Pages 12 Installation StepProceed to , Example One-piece door without track Jamb hardwareWall Header Bracket Installation Install the Header BracketCeiling Header Bracket Installation Insert a ring fastener to secure Attach the Rail to the Header BracketWith the door fully open and parallel to the floor Position the OpenerHang the Opener Installation StepShown Actual Size UihJIlnJIlilililil Ililn Install the Door ControlSlide down to secure. Adjust screw for snug fit Serious injury or deathAttach the Emergency Release Rope and Handle Install the Light and the LensInstall the light Install the lensElectrical Requirements Permanent Widng ConnectionsRightWrong Important Information about Safety Reversing Sensor Safety Reversing SystemGarage door track installation preferred Sensor Safety ReversingInstalling the Brackets Be sure power to the opener is disconnectedAligning the Safety Sensors Mounting and Wiring the Safety SensorsTrouble Shooting the Safety Sensors Fasten Door Bracket IIIIIlllillllILllllllllllllllllNut IIIIIII11111111LLLIIIIIlIRBok Connect Door Arm to TrolleyAbove holes Adjustment Procedures for One-Piece Doors Adjustment Step If the door does not close completely Adjustment Section Pages 28 Adjustment StepHow and When to Adjust the Limits Adjust the UP and Down LimitsHow and When to Adjust the Forces Adjust the ForcePress the remote control push button to open the door Test The Safety Reversing SensorTest the Safety Reverse System Important safety checkTo reduce the risk of severe injury or death to persons MaintenanceSchedule Operation of the Door Control see Operation of Your OpenerManual disconnect Position SECURITY,I Receiver and Remote Control ProgrammingIf you have a Premium Control Console If you do not have a Premium Control ConsoleSituation Probable Cause and Solution Having a Problem?Doesnt turn off Situation Probable Cause SolutionDoor opens but Opener lights blink for 5 secondsRail Assembly Parts Repair PartsInstallation Parts Br co.tact ASSEMe,v Opener Assembly PartsWith the door closed AccessoriesOnly through Sears Parts & Service For Sectional Doors OnlIndex Sears Warranty For in-homemajor brand repair servicePara ordenar piezas con entrega a domicilio

139.53978SRT specifications

The Craftsman 139.53978SRT is an advanced garage door opener that combines reliability, performance, and ease of use. Designed to cater to the needs of modern homeowners, this model stands out with its robust features and technological innovations.

One of the key highlights of the Craftsman 139.53978SRT is its powerful motor, delivering a peak horsepower equivalent to ensure smooth and efficient operation. This allows it to effortlessly lift even the heaviest of garage doors, making it suitable for various types of residential garage doors. The quiet operation of this opener is another major advantage, allowing for a peaceful environment in and around the garage.

Another notable feature is the smart technology integration. The Craftsman 139.53978SRT is compatible with a range of smart home systems, allowing users to control their garage door remotely via a smartphone app. This feature not only adds convenience but also enhances security, as users can receive alerts and notifications about the status of their garage door, ensuring peace of mind.

Security is a priority with this model, which comes equipped with rolling code technology. This mechanism generates a new code each time the remote is used, preventing unauthorized access and ensuring that your garage remains secure from intruders. Additionally, the enhanced safety features include safety sensors that detect obstacles, automatically reversing the door's movement if something is detected, thereby preventing accidents.

Installation and setup are straightforward, thanks to the user-friendly design of the Craftsman 139.53978SRT. The unit includes detailed instructions and all necessary hardware for installation. Many users can set it up within a few hours without the need for professional assistance.

With a durable construction, the Craftsman 139.53978SRT is built to last. It has a sleek design that complements various home aesthetics while withstanding wear and tear from daily use. Maintenance is minimal, with easy access to essential components for servicing.

In summary, the Craftsman 139.53978SRT offers a perfect blend of power, technology, and security features. Its user-friendly design, combined with smart technology compatibility and robust safety measures, makes it an ideal choice for homeowners seeking a reliable garage door opener. Whether you’re looking to upgrade an old system or install a new one, this model is sure to meet your requirements and enhance the functionality of your garage.