Tighten the Chain

ASSEMBLY STEP 5

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

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

,,When the chain is approximately 1/4" (6 mm) above the base of the rail at its midpoint, reqighten 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 dosed 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 puff 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 ff necessar]z Then repeat Adjustment

Figure	1			Tro!ley
		Outer	Lack	Threaded
		Nut	Washer	Shatl
	To _ghlen Outer Nut _	,		/
	U	_	TO Tlghlen
Figure	2
	Chain

Base el Ra

Mid length ut Roll

Step 3.

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

_._b1,_, ,,,u_,

i L J L_ i

, Jl ULLL_ LL ±H LuJl

INSTALLATION

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of SEVERE INJURY or DEATH:

1READANDFOLLOWALL INSTALLATIONWARNINGS ANDINSTRUCTIONS.

2Install garagedoor openeronly onproperly balanced and lubricatedgaragedoor An improperlybalanced

door maynet reversewhen requiredandcould result in SEVEREINJURYor DEATH

3All repairsto cables,spring assembliesandother hardwareMUSTbe madeby a traineddoor systems technicianBEFOREinstallingopener,

4Disableatt locks and remeveall ropesconnectedto garagedoor BEFOREinstalling openerto avoid entanglement..

5Install garagedoor opener7feet (2 13 m) or more abovefloor

6Mountemergencyreleasehandle6 feet (183 m) above floor

7NEVERconnectgaragedoor openerto power source until instructedto do so

8..NEVERwearwatches,rings or loose clothingwhile instalgngor servicingopener Theycould be caughtin garagedoor or openermechanisms,

9Install walt-mountedgaragedoor control:

• within sight of the garagedoor.

,out of reachof children at minimum height of 5 feet (15 m).

• awayfrom all movingparts of the door

I0 Placeentrapmentwarninglabel onwal! nextto garage door control

11Placemanua]release/safetyreversetest labelin plain viewon insideof garagedoor

12Uponcompletion of installation,test safety reversal system Door MUSTreverseon contactwith a

I-1t2" (38 cm) high object(or a 2x4 laid flat) on the floor

139.53920D specifications

The Craftsman 139.53920D is a versatile and robust garage door opener, designed to provide both convenience and security to homeowners. Known for its reliability and advanced features, this model stands out in the competitive market of garage door openers.

One of the key features of the Craftsman 139.53920D is its powerful motor. With a lifting capacity suitable for most standard garage doors, it boasts a 1/2 horsepower motor that delivers the strength necessary to open and close heavy garage doors effortlessly. This ensures a smooth and quiet operation, minimizing noise disruptions, which is especially valuable for homes with living spaces above or adjacent to the garage.

In terms of technology, the Craftsman 139.53920D incorporates a range of advanced features aimed at enhancing user experience. It comes equipped with Craftsman's proprietary Triband technology, which operates on three frequencies, providing increased range and improved signal reliability. This technology minimizes signal interference, ensuring that the opener responds quickly to your commands, whether you are close by or parked at the end of the driveway.

Safety is also a critical aspect of the Craftsman 139.53920D. The unit includes an automatic reverse feature that immediately stops and reverses the door's motion if it detects an obstacle in its path. This is vital in preventing accidents and ensuring the safety of children and pets. Additionally, the opener is compatible with the Security+ 2.0 system, which offers rolling code technology that changes the access code each time the remote is used, adding an extra layer of security against unauthorized access.

Installation of the Craftsman 139.53920D is user-friendly, with clear instructions provided and all necessary hardware included. The unit can accommodate various garage door styles, making it a flexible choice for different homeowners.

Furthermore, the Craftsman 139.53920D offers smartphone compatibility through the Craftsman smart app, allowing users to control their garage door from anywhere, receive real-time alerts, and even monitor the status of the door remotely. This feature makes it easier than ever to ensure that your garage is secure, even when you're not at home.

In summary, the Craftsman 139.53920D is an excellent choice for homeowners seeking reliability, advanced technology, and convenient features in a garage door opener. Its blend of power, safety mechanisms, and smart technology makes it a standout option for enhancing home security and convenience.

Craftsman 139.53920D Tighten the Chain, 1t2 38 cm high objector a 2x4 laid flat on the floor

Models: 139.53920D

ASSEMBLY STEP 5