Chamberlain 1145-1/3HP, 1150-1/3HP Adjust Force, Force Adjustment Chart, Proceed to Step

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ADJUSTMENT STEP 2

Adjust Force

Force Adjustment Controls are located on rear panel of opener. FORCE ADJUSTMENT settings regulate amount of the power required to open and close door.

NOTE: The door STOPS in the UP direction if anything interferes with its travel. Door REVERSES in the DOWN direction if anything interferes with its travel (including binding or unbalanced doors).

If the force adjustments are set too light, door travel may be interrupted by nuisance reversals in DOWN direction and stops in UP direction. Weather conditions can affect the door movement, so occasional adjustment may be needed.

Maximum force adjustment range is 260 degrees, about 3/4 of a complete turn. Do not force controls beyond that point. Turn force adjustment controls with a screwdriver.

DO NOT USE FORCE ADJUSTMENTS TO COMPENSATE FOR A BINDING OR STICKING GARAGE DOOR EXCESSIVE

FORCE WILL INTERFERE WITH THE PROPER OPERATION OF THE SAFETY REVERSE SYSTEM OR DAMAGE THE GARAGE DOOR.

Adjustment Label

FORCE ADJUSTMENT CHART

TEST DOWN (CLOSE) FORCE

IF DOOR DOESN'T OPEN AT LEAST 5 FEET

 

Grasp the door handle or door bottom when door is about halfway through DOWN (CLOSE) TRAVEL. Door should reverse. If the door is hard to hold or doesn't reverse, decrease DOWN (CLOSE) FORCE by turning the control in a counterclockwise direction. Make 10 degree turn adjustments until door reverses normally. After each adjustment, run opener through a complete cycle.

PROCEED TO STEP 3

Increase UP (OPEN) FORCE by turning the control in a clockwise direction. Make 10 degree turn adjustments until door opens completely. Readjust UP LIMIT if necessary. After each adjustment, run opener through a complete travel cycle.

IF DOOR REVERSES DURING DOWN

(CLOSE) CYCLE

Increase DOWN (CLOSE) FORCE by turning control clockwise. Make 10 degree turn adjustments until door completes close cycle. After each adjustment, run the opener through a complete travel cycle.

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Contents Garage Door Opener Start by Reading These Important Safety Rules Specifications Features of Your OpenerStandard Remote Control Transmitter AccessoriesChannel Remote Control FT T-RAILPage HOW to Activate the Opener HOW to Operate the Door ManuallyHOW the Door Moves When the Opener is Activated Care of the Opener Maintenance of Your OpenerTwice a Year Check to be Sure Door Opens & Closes Fully Once a YearAttach Chain to Sprocket Attach T-Rail To OpenerTighten the Chain Assembly Sectional Door & 1-PIECE Door with Track Installation StepExample ONE-PIECE Door Without TrackINSTALLATION-SECTIONAL Door & 1-PIECE Door with Track Installation 1-PIECE Door Without TrackPosition the Opener Hang the Opener Operation Lighted Door Control Button Wiring Instructions for AccessoriesModels 1160 and 1150 only Connect Electric Power Procedure for Permanent Wiring if required by local codesAttach Manual Release Rope & Handle Sectional Door Installation Procedure All One-Piece Door Installation ProcedureFasten Door Bracket and Plate Connect Door Arm to Trolley Sectional Doors InstallationALL ONE-PIECE Doors Open Door Adjustment Closed Door AdjustmentIf Door does not Close Completely Limit Adjustment ChartIf ONE-PIECE Door does not Close Completely If Opener Reverses in Fully Closed PositionForce Adjustment Chart Adjust ForceProceed to Step Test Down Close Force If Door Doesnt Open AT Least 5 FeetInstallation of Optional Safety Feature Test Safety Reverse SystemGarage Door Openers With Receiver Smart Code Button Radio ControlsHaving a Problem? Review Pages 2 and 3 Before Proceeding Opener Lights Doesnt Turn on DUE to Power FailureDoesnt Turn OFF Unit Must be GroundedButton Assembly Rail Assembly Parts List Installation Parts ListChassis Assembly Parts List KEY Part DescriptionNot Shown Limited Warranty on Motor Liftmaster Garage Door Opener ONE-YEAR Limited Warranty

1160-1/2HP, 1145-1/3HP, 1150-1/3HP specifications

The Chamberlain 1150-1/3HP, 1145-1/3HP, and 1160-1/2HP garage door openers represent a pinnacle of performance and reliability in the world of residential garage automation. Each model combines innovative technology with essential features to provide homeowners with the convenience and security they need.

The Chamberlain 1150-1/3HP is designed for standard single and double garage doors. Its powerful 1/3 horsepower motor ensures smooth and efficient operation, making it an ideal choice for everyday use. One standout feature is its ultra-quiet operation, thanks to the built-in soft start and stop system. This technology minimizes noise, making it perfect for homes with living spaces adjacent to the garage. Additionally, the opener comes equipped with MyQ technology, enabling users to monitor and control their garage door from anywhere using a smartphone app.

Moving on to the Chamberlain 1145-1/3HP, this model shares many features with the 1150 but enhances security with its wireless keypad and remote control capabilities. The wireless keypad allows for keyless entry, providing users with the flexibility to open the garage door with a simple code. This feature is particularly useful for families or when handing over access to trusted individuals, such as service personnel.

Finally, the Chamberlain 1160-1/2HP takes performance up a notch with its more powerful motor, capable of handling heavier doors. The 1/2 horsepower motor ensures increased lifting capacity and improved durability, making it suitable for larger or insulated garage doors that may require more force to operate. Like its counterparts, the 1160 is also compatible with MyQ technology, allowing for seamless smartphone integration.

All three models feature a robust design with a steel-reinforced belt drive system that offers strength and reliability. Safety features such as the SecureCode technology ensure that the remote control codes cannot be easily copied, enhancing security for your home. Additionally, they include safety reversing systems that stop and reverse the door if an obstacle is detected, ensuring safe operation for families.

In summary, the Chamberlain 1150-1/3HP, 1145-1/3HP, and 1160-1/2HP garage door openers are distinguished by their blend of power, quiet operation, advanced security features, and smart technology. Ideal for any homeowner seeking convenience and peace of mind, these models stand out as exceptional choices in the realm of garage door automation.
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