Index

 

Access Door/Outside

Key Release

Accessory

4, 5

Chain Tension

 

 

4, 5, 11

Electrical

Safety

Warnings

2, 20, 31

Garage Door

 

 

 

 

 

Testing for

balance, binding and sticking

3, 28, 31

Determining high point of travel:

 

 

Sectional door

 

12

One-piece

door

 

13

Disabling existing locks

3, 11

Door clearance

brackets (for garages with low headroom)

12, 38

Force controls

 

 

 

 

Adjustment

procedures

4, 29

Problems that might require force

adjustments

34, 35

Safety warnings

 

29, 31

Door hardware

 

 

3, 9, 11, 12, 18, 31,32

Maintenance

instruction label

11,28

Reinforcement requirements

4, 24

Removing of all ropes

.......................................................................................................................................

3, 11

Possible door damage

...................................................................................................................................

16, 24

Travel limits

 

 

 

 

 

Adjustment

procedures

28

Problems that might require limit adjustments

34, 35

Safety warnings

 

28, 31

Manual (Emergency) Release Rope & Handle

 

Lockout feature

....................................................................................................................................................

 

32

Manual disconnect

 

32

Safety warnings

 

11, 19, 31, 32

Opener Terminals

 

 

 

Door control connections

18

Safety reversing sensor connections

23

Operational

Noise

 

 

 

Sprocket noise

.....................................................................................................................................................

 

11

Vibration noise (isolator kit)

34

Receiver

and Remote

Control

 

 

Programming the receiver

33

Erasing all

codes

 

33

Activating other openers

33

Safety warning

.....................................................................................................................................................

 

33

Problems with remote control operation

34

Safety Reverse

Test Procedure

30

Testing required

 

11, 30, 34, 35

Safety reverse system problems

 

 

Securing header bracket to wall

12

Adjusting travel limits

28

Applying excessive force on the door

29

Buckling or uneven floor

4, 5

Safety Warnings

.........................................................

2, 3, 9, 11, 12, 16, 18, 19, 20, 21,24,

28, 29, 30, 31,32, 33

User Instruction

Label

for garage

wall

11, 18

39

Page 39
Image 39
Craftsman 139.53978SRT owner manual Index

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.