iii

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 necessar_ 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

To Tigh,en Outer Nut ---i_-1

[

/

 

 

'T°nTI_Nhrutn

Figure 2

 

 

 

,,

 

Chain

I

 

I

i

 

tIJI II

,1 ,,i,_

1111 il II

/

i

II/2 Inch

 

 

Base _)fRail

Mid length of Rail

I NSTALLATION

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of severe injury or death:

1.READANDFOLLOWALL INSTALLATIONWARNINGS ANDINSTRUCTIONS.

2.Install garagedoor openeronly on properlybalanced andlubricatedgaragedoor.An improperlybalanced door maynot reversewhen requiredand could resultin severeinjury or death.

3.All repairsto cables,spring assembliesand other hardwareMUSTbe macleby a traineddoor systems technicianbeforeinstalling opener.

4.Disableall locks andremoveall ropesconnectedto garagedoor beforeinstallingopenerto avoid entanglement.

5.Install garagedoor opener7 feet or more abovefloor.

6.Mount emergencyreleasehandle6 feetabovefloor.

7.NEVERconnectgaragedoor openerto powersource until instructedto do so.

8.NEVERwearwatches,rings or looseclothingwhile installingor servicingopener.Theycould be caughtin garagedoor or openermechanisms.

9.Installwall-mountedgaragedoorcontrol:

•within sight of the garagedoor

•out of reachof children at minimumheightof 5 feet

•awayfrom all movingparts of the door.

10.Placeentrapmentwarninglabelon wall nextto garage door control.

11.Placemanualrelease/safetyreversetest labelin plain viewon inside of garagedoor.

12.Uponcompletionof installation,test safetyreversal system. DoorMUSTreverseon contactwith a one- inch high object(or a 2x4 laidflat) onthe floor.

11

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Sears 139.53971SRT, 139.53960SRT, 139.53968SRT owner manual Tighten the Chain, II/2 Inch, Base fRail Mid length of Rail
Page 10 Page 12

139.53960SRT, 139.53968SRT, 139.53971SRT specifications

Sears 139.53971SRT, 139.53968SRT, and 139.53960SRT are a series of garage door openers that have gained recognition for their reliability and advanced features. These models represent a shift towards smarter technology in home automation, providing homeowners with increased convenience, security, and control over their garage doors.

One of the standout features of these models is their Smart Technology integration. Each unit is equipped with the ability to connect to Wi-Fi, allowing users to control their garage doors remotely through a smartphone app. This means that you can open or close your garage door from anywhere, check its status, and receive notifications if the door is left open for an extended period. This feature enhances home security by providing real-time updates, giving users peace of mind when they are away from home.

The 139.53971SRT model is designed with a powerful motor that ensures smooth and quiet operation, making it suitable for homes with bedrooms adjacent to the garage. It features a built-in battery backup system, which is crucial during power outages, providing peace of mind that your garage door can still be operated.

Meanwhile, the 139.53968SRT and 139.53960SRT models come with a range of safety features such as the security keypad and 3-button remote control, which allow multiple users to gain access without the need for a physical key. The Smart Technology also incorporates advanced encryption protocols that help prevent unauthorized access, ensuring the garage remains secure.

Additionally, all three models are designed for easy installation and come with a variety of installation accessories. Their adaptability makes them compatible with a wide range of garage doors, enhancing their appeal for different homeowners.

In terms of longevity, the garage door openers are built with high-quality materials, promising durability and a longer lifespan. They also feature a noise-dampening design that minimizes operational sound, making them an excellent choice for residential applications.

Overall, the Sears 139.53971SRT, 139.53968SRT, and 139.53960SRT garage door openers combine modern technology with user-friendly features to offer a secure, efficient, and convenient garage solution for today's smart homes. Their innovative approach addresses the traditional needs of homeowners while embracing new technological advancements, making them a relevant choice in today's market.
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