ADJUSTMENT STEP 1

Limit Adjustment

Run the opener through a complete travel cycle. Force adjustments are not necessary when the door opens and closes completely and doesn't reverse unintentionally in the fully closed position.

Locate the button on the back panel of motor unit.

NOTE: if the operator stops or reverses and will not allow the run through of a complete travel cycle, it may be necessary for the operator to adjust the force profile.

Push the button twice to enter into Force Setting Mode. Proceed with limit setting.

NOTE: Repeated operation of the opener during adjustment procedures may cause motor to overheat and shut off. Allow a 15 minute cooling period after 5 continuous operations of the opener.

Read the following carefully before proceeding to Force Adjustment. Use a screwdriver to make limit adjustments.

If Door Doesn't Open Completely but Opens at Least 1.5m (5 feet): Increase up travel. Turn the up limit adjustment screw clockwise. One turn equals 5cm (2") of travel.

If door does not open at least 1.5m (5 feet). Adjust force, see Force Adjustment: Place the opener into the Force Adjustment Mode, see Force Adjustment.

If Door Doesn't Close Completely: If door arm is at maximum length, increase down travel. Turn down limit adjustment screw counterclockwise. One turn equals 5cm (2") of travel. If the door still will not close completely, the header bracket is positioned too high.

If Opener Reverses in Fully Closed Position: Decrease down travel. Turn down limit adjustment screw clockwise. One turn equals 5cm (2") of travel.

If Door Reverses when Closing and there is no Interference to Travel Cycle: Test door for binding. Pull manual release handle. Manually open and close door. If door is binding, call a door serviceman. If door is not binding or unbalanced, place the opener into the Force Setting Mode, see Force Settings.

PROCEED TO “FORCE SETTINGS” TO COMPLETE STEP “LIMIT ADJUSTMENT”. Forces must be learned in order for limit adjustments to operate properly.

WARNING

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

•Incorrect adjustment of garage door travel limits will interfere with proper operation of safety reversal system.

•If one control (force or travel limits) is adjusted, the other control may also need adjustment.

•After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 40mm high object on floor.

CAUTION

To prevent damage to vehicles, be sure fully open door provides adequate clearance.

Limit Adjustment ￿

Screws

114A2845

25

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Chamberlain 1140, 80ad, 1150, 1146, 1156, 120ad, 1160jg, 1145jg, 1155 manual Adjustment Step, Limit Adjustment
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1155, 1156, 1140, 1150, 80ad specifications

The Chamberlain 1160JG, 1160, 1146, 120AD, and 1145 garage door openers are some of the most reliable and feature-rich options available in today’s market. These models are renowned for their robust performance, user-friendly interface, and advanced technology, making them a top choice for homeowners seeking convenience and security.

The Chamberlain 1160JG and 1160 models stand out with their powerful DC motor, which ensures a smooth and quiet operation. They are designed for faster opening speeds, allowing users to enter and exit the garage quickly. One of the prominent features of these models is the built-in myQ technology, which enables remote access and control via smartphone applications. Users can monitor their garage door status, receive alerts, and operate the door from virtually anywhere, enhancing convenience and peace of mind.

The Chamberlain 1146 model combines strength and reliability, equipped with a durable chain drive system. This model offers exceptional lifting power, making it suitable for heavy garage doors. The 1146 also includes a battery backup system, ensuring functionality even during power outages. Its safety features, including infrared sensors, help prevent accidents by detecting obstructions in the door's path.

The Chamberlain 120AD model is particularly appreciated for its easy installation process. This model features a belt drive system, which provides quieter operation compared to chain-driven alternatives. This makes the 120AD an excellent choice for homes with living spaces adjacent to the garage. It also includes built-in Wi-Fi, enabling smart home integration and remote access through the myQ app.

The Chamberlain 1145 model is a compact yet powerful option that maintains high reliability. It offers a strong chain drive system and a variety of safety features, including rolling code technology that enhances security by changing the access code after every use. The 1145 is ideal for families looking for a cost-effective yet dependable solution.

Overall, the Chamberlain 1160JG, 1160, 1146, 120AD, and 1145 garage door openers not only bring convenience through advanced technology but also prioritize safety, making them an excellent investment for any homeowner. Their blend of performance, durability, and smart technology ensures that users benefit from a hassle-free garage door experience.
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