ASSEMBLY STEP 5

Tighten the Chain

•Spin the inner nut and lock washer down the threaded shaft, away from the trolley.

•To tighten the chain, turn outer nut in the direction shown (Figure 1).

•When the chain is approximately 1/2" above the base of the rail at its midpoint, re-tighten the inner nut to secure the adjustment.

Sprocket noise can result if chain is too loose.

When installation is complete, you may notice some chain droop with the door closed. This is normal. If the chain returns to the position shown in Figure 2 when the door is open, do not re-adjust the chain.

NOTE: During future maintenance, ALWAYS pull the emergency release handle to disconnect trolley before adjusting chain.

NOTE: You may notice loosening of chain after Adjustment Step 3 (Test the Safety Reversal System). Check for proper tension and readjust chain if necessary. Then repeat Adjustment Step 3.

You have now finished assembling your garage door opener. Please read the following warnings before proceeding to the installation section.

Figure 1

Outer Lock Trolley

Nut Washer Shaft

Figure 2

Chaini

Base of Rail

Mid length of Rail

INSTALLATION

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of severe injury or death:

1.READAND FOLLOWALL INSTALLATIONWARNINGS AND INSTRUCTIONS.

2.Install garage door opener only on properly balanced and lubricated garagedoor. An improperly balanced

door may not reversewhen required and could result in SEVEREINJURYor DEATH.

3.All repairs to cables, spring assembliesand other hardware MUST be made by a trained door systems

technician before installing opener.

4.Disableall locks and remove all ropes connected to garagedoor BEFOREinstalling openerto avoid

entanglement.

5.Install garage door opener 7 feet or more above floor.

6.Mount emergency releasehandle 6 feet above floor.

7.NEVERconnect garage door openerto power source until instructed to do so.

8.NEVERwear watches, rings or loose clothing while

installing or servicing opener.They could be caught in garagedoor or opener mechanisms.

9.Install wall-mounted garagedoor control:

•within sight of the garage door

•out of reach of children at minimum height of 5 feet

•awayfrom all moving parts of the door.

10.Placeentrapment warning label on wall next to garage door control.

11.Placemanual release/safetyreversetest label in plain view on inside of garagedoor.

12.Upon completion of installation, test safety reversal system. Door MUST reverse on contact with a one- inch high object (or a 2x4 laid flat) on the floor.

11

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Sears 139.53962SRT1, 139.53975SRT1 owner manual To reduce the risk of severe injury or death, Tighten the Chain
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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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