ASSEMBLY

STEP 5

 

 

 

Tighten

the

Chain

 

 

 

 

 

Figure

1

 

Trolley

• Spin the inner

nut and lock washer down the trolley

 

 

Outer

Lock

Threaded

threaded shaft, away from the trolley.

Nut

Washer

Shaft

 

 

 

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

•When the chain is approximately 1/4" (6 mm) 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.

Figure 2

When installation is complete, you may notice some chain

droop with the door closed. This is normal. If the chainChaini 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. 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.

 

I

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 garage door. An improperly balanced door may not reversewhen required and could result in SEVEREINJURYor DEATH.

3.ALL repairs to cables, spring assemblies and other hardware MUST be made by a trained door systems technician BEFOREinstalling opener.

4.DisableALL locks and remove ALL ropes connected to garage door BEFOREinstalling opener to avoid entanglement.

5.Install garage door opener 7 feet (2.13 m) or more above floor.

6.Mount emergency releasehandle 6 feet (1.83 m) 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 garage door or opener mechanisms.

9.Install wall-mounted garage door control:

•within sight of the garage door.

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

(1.5 m).

•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 garage door.

12.Upon completion of installation, test safety reversal system. Door MUST reverseon contact with a

1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on the floor.

11

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Sears 139.53930D owner manual Tighten Chain, Readand Followall Installationwarnings and Instructions
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139.53930D specifications

The Sears 139.53930D is a sophisticated and reliable garage door opener that has made a significant mark in the world of home automation. With its innovative design and advanced features, this model stands out in the crowded marketplace of garage door systems.

One of the defining characteristics of the 139.53930D is its powerful motor. The opener is equipped with a robust 1/2 horsepower motor, providing ample lifting power for a variety of garage door sizes and weights. This ensures smooth and efficient operation, allowing homeowners to go about their daily routines without the worry of a sluggish or malfunctioning door.

Another key feature of the 139.53930D is its safety and security enhancements. The unit comes with a complete set of safety sensors that can detect objects in the door's path, stopping the door from closing if an obstruction is detected. This ensures added safety for children and pets, an essential consideration for any family. Additionally, the model incorporates a rolling code technology that generates a new access code every time the remote is used. This significantly reduces the risk of unauthorized access, giving homeowners peace of mind.

The installation process has also been made simpler with this model's user-friendly design. The package includes detailed instructions and all necessary hardware, making it accessible for both professional installers and DIY enthusiasts. The opener is compatible with various garage door sizes, accommodating most standard installations, which boosts its versatility.

Moreover, the Sears 139.53930D supports multiple forms of remote access. It comes with two streamlined remotes that make it easy to open and close the garage from a distance. For added convenience, the system is compatible with Smart Home technology, allowing users to control the door via smartphone apps or smart home systems. This level of integration is becoming increasingly popular, providing an additional layer of convenience for modern households.

In conclusion, the Sears 139.53930D delivers a robust and secure solution for garage door automation. With its powerful motor, advanced safety features, easy installation, and compatibility with smart technology, it represents a formidable choice for homeowners looking to enhance their garage door system. As the trend towards home automation continues to grow, this model stands out as a reliable and efficient option.
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