Chamberlain 3255-2M 1/2 HP, 3245M 1/3 HP Preparing your garage door, Tools needed, Sectional Door

Page 3

Preparing your garage door

Before you begin:

•Disable locks.

•Remove any ropes connected to garage door.

•Complete the following test to make sure your garage door is balanced and is not sticking or binding:

1.Lift the door about halfway as shown. Release the door. If balanced, it should stay in place, supported entirely by its springs.

2.Raise and lower the door to see if there is any binding or sticking.

If your door binds, sticks, or is out of balance, call a trained door systems technician.

To prevent possible SERIOUS INJURY or DEATH:

•ALWAYS call a trained door systems technician if garage door binds, sticks or is out of balance. An unbalanced garage door may NOT reverse when required.

•NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware, ALL of which are under EXTREME tension.

•Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement.

To prevent damage to garage door and opener:

Sectional Door

One-Piece Door

•ALWAYS disable locks BEFORE installing and operating the opener.

•ONLY operate garage door opener at 120V, 60 Hz to avoid malfunction and damage.

Tools needed

During assembly, installation and adjustment of the opener, instructions will call for hand tools as illustrated below.

 

 

 

Pencil

 

 

Carpenter’s

1 2

 

 

 

Level (Optional)

 

 

Hack Saw

 

 

Tape Measure

 

 

 

 

 

 

 

 

Wire Cutters

 

 

Drill

3/16", 5/16" and

 

Claw Hammer

 

 

5/32" Drill Bits

Pliers

 

 

 

 

 

Stepladder

1/2" and 7/16" Sockets

Screwdriver

 

and Wrench

 

Adjustable End Wrench

 

 

 

3

Page 2 Page 4
Image 3
Page 2 Page 4
Contents For Residential Use Only Garage Door OpenerIntroduction Table of ContentsOne-Piece Door Preparing your garage doorTools needed Sectional DoorONE-PIECE Door with Track Sectional Door InstallationPlanning ONE-PIECE Door Without TrackCarton Inventory Installation HardwareAssembly Step Attach the Rail to the Motor UnitBolt previously removed from motor unit Tighten the Chain InstallationDetermine the Header Bracket Location Installation StepInstall the Header Bracket Wall Header Bracket InstallationCeiling Header Bracket Installation Attach the Rail to the Header Bracket Sectional Door or ONE-PIECE Door with Track Position the OpenerHang the Opener Standard installation only Run bell wire up wall Install the Door ControlAttach the Emergency Release Rope and Handle Install the LightElectrical Requirements Install The Protector System Important Information about Safety Reversing SensorFacing the door from inside the garage Floor installation Figure Installing the BracketsGarage door track installation preferred Wall installationMounting and Wiring the Safety Reversing Sensors Troubleshooting the Safety ReversingAligning the Safety Reversing Sensors Wood Doors Metal, insulated or light weight factory reinforced doorsFasten the Door Bracket Sectional DoorsONE-PIECE Doors Sectional Doors only Connect Door Arm to TrolleyConnect the door arm to the trolley Adjustment procedures, FigureALL ONE-PIECE Doors Assemble the door arm, FigureIf the door does not close completely Adjustment StepAdjust the UP and Down Travel Limits If door does not open at least 5 feet 1.5 mTest the UP open force Adjust the ForceHOW and When to Adjust the Forces Test the Down close forceTest The Protector System Test the Safety Reversal SystemAdjust Important Safety CheckUsing Your Garage Door Opener OperationActivate your opener with any of the following Light feature Lock featureMULTI-FUNCTION Door Control Once a Year Care of Your OpenerOnce a Month Twice a YearHaving a PROBLEM? Symptom Motor unit doesn’t operate Safety reversing sensors wire open broken or disconnectedDoor control or wire shorted Symptom LED is not lit on door controlTo Erase All Codes From Motor Unit Memory To Add or Reprogram a Hand-held Remote ControlUsing the Learn Button Using the Door Control ProgrammingTo Add, Reprogram or Change a Keyless Entry PIN To change an existing, known PINTo set a temporary PIN Repair Parts Rail Assembly PartsInstallation Parts Motor Unit Assembly Parts Complete with Spring washerComplete with Logic board Accessories Liftmaster Service is On Call

3255M 1/2 HP, 3245M 1/3 HP, 3255-2M 1/2 HP specifications

The Chamberlain 3255-2M, 3245M, and 3255M garage door openers stand out in the market for their reliability and superior performance. Each model offers a unique combination of power and features, catering to different needs and preferences.

The Chamberlain 3255-2M is a robust 1/2 HP opener designed for heavy residential garage doors. Its powerful motor ensures smooth and efficient operation, making it ideal for doors weighing up to 7 feet high. This model incorporates the latest in opening technology, including a durable chain drive mechanism that provides strength and longevity. One of its significant features is the incorporated MyQ technology, enabling users to control their garage door remotely through a smartphone app. This innovative feature brings convenience and peace of mind, as homeowners can check the status of the door from anywhere.

Another excellent choice is the Chamberlain 3245M, a 1/3 HP model that offers a balance of performance and affordability. It is suitable for lighter doors, providing consistent and reliable opening and closing. The 3245M model also boasts a protective cover that enhances its durability against the elements. It operates quietly thanks to its direct drive system, making it an excellent option for garages attached to living spaces. Like the 3255-2M, this model is also equipped with MyQ technology, allowing users to monitor and control their garage door from their smartphones seamlessly.

Finally, the Chamberlain 3255M, another 1/2 HP opener, offers similar features to the 3255-2M but with a focus on belt drive technology. This model is built for quieter performance, making it ideal for homes where noise is a concern. The belt drive reduces vibrations and sound, ensuring a smoother user experience. This model also comes with a battery backup system, which provides added security during power outages.

All these models emphasize safety and security, featuring auto-reverse functionality that senses obstacles and prevents the door from closing on them. The Chamberlain garage door openers are also equipped with a rolling code technology that changes the access code each time the remote is used, enhancing security against unauthorized access.

In summary, the Chamberlain 3255-2M, 3245M, and 3255M garage door openers cater to a variety of needs with their powerful motors, innovative technologies, and user-friendly features. Their reliability and performance make them an excellent investment for any homeowner.
Top Page Image Contents