Chamberlain 3255-2M 1/2 HP, 3245M 1/3 HP, 3255M 1/2 HP owner manual Hang the Opener

Page 12

INSTALLATION STEP 5

Hang the Opener

Three representative installations are shown. Yours may be different. Hanging brackets should be angled (Figure 1) to provide rigid support. On finished ceilings (Figure 2 and Figure 3), attach a sturdy metal bracket to structural supports before installing the opener. This bracket and fastening hardware are not provided.

1.Measure the distance from each side of the motor unit to the structural support.

2.Cut both pieces of the hanging bracket to required lengths.

3.Drill 3/16" pilot holes in the structural supports.

4.Attach one end of each bracket to a support with 5/16"-18x1-7/8" lag screws.

5.Fasten the opener to the hanging brackets with 5/16"-18x7/8" hex bolts, lock washers and nuts.

6.Check to make sure the rail is centered over the door (or in line with the header bracket if the bracket is not centered above the door).

7.Remove the 2x4. Operate the door manually. If the door hits the rail, raise the header bracket.

8.Grease the top and underside of the rail surface where the trolley slides with rail grease.

NOTE: DO NOT connect power to opener at this time.

HARDWARE SHOWN ACTUAL SIZE

Lag Screw 5/16"-18x1-7/8"

Hex Bolt

 

Lock Washer 5/16"

5/16"-18x7/8"

Nut 5/16"-18

To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to structural supports of the garage. Concrete anchors MUST be used if installing ANY brackets into masonry.

Figure 1

Structural

Supports

Measure

Lag Screws

Distance

5/16"-18x1-7/8"

Bolt 5/16"-18x7/8"

Lock Washer 5/16"

Nut 5/16"-18

Figure 2

Hidden

Support

Bracket

(Not Provided)

 

FINISHED CEILING

 

Lag Screws

 

5/16"-18x1-7/8"

 

(Not Provided)

 

Bolt 5/16"-18x7/8"

 

Lock Washer 5/16"

Bolt 5/16"-18x7/8"

Nut 5/16"-18

Lock Washer 5/16"

 

Nut 5/16"-18

 

Figure 3

Lag Screws 5/16"-18x1-7/8"

 

FINISHED CEILING

 

(Not Provided)

 

Bolt 5/16"-18x7/8"

 

Lock Washer 5/16"

Bolt 5/16"-18x7/8"

Nut 5/16"-18

Lock Washer 5/16"

 

Nut 5/16"-18

 

12

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Contents Garage Door Opener For Residential Use OnlyTable of Contents IntroductionPreparing your garage door Tools neededSectional Door One-Piece DoorSectional Door Installation PlanningONE-PIECE Door Without Track ONE-PIECE Door with TrackInstallation Hardware Carton InventoryAssembly Step Attach the Rail to the Motor UnitBolt previously removed from motor unit Installation Tighten the ChainInstallation Step Determine the Header Bracket LocationInstall the Header Bracket Wall Header Bracket InstallationCeiling Header Bracket Installation Attach the Rail to the Header Bracket Position the Opener Sectional Door or ONE-PIECE Door with TrackHang the Opener Install the Door Control Standard installation only Run bell wire up wallInstall the Light Attach the Emergency Release Rope and HandleElectrical Requirements Install The Protector System Important Information about Safety Reversing SensorFacing the door from inside the garage Installing the Brackets Garage door track installation preferredWall installation Floor installation FigureMounting and Wiring the Safety Reversing Sensors Troubleshooting the Safety ReversingAligning the Safety Reversing Sensors Metal, insulated or light weight factory reinforced doors Fasten the Door BracketSectional Doors Wood DoorsONE-PIECE Doors Connect Door Arm to Trolley Sectional Doors onlyAdjustment procedures, Figure ALL ONE-PIECE DoorsAssemble the door arm, Figure Connect the door arm to the trolleyAdjustment Step Adjust the UP and Down Travel LimitsIf door does not open at least 5 feet 1.5 m If the door does not close completelyAdjust the Force HOW and When to Adjust the ForcesTest the Down close force Test the UP open forceTest the Safety Reversal System AdjustImportant Safety Check Test The Protector SystemUsing Your Garage Door Opener OperationActivate your opener with any of the following Light feature Lock featureMULTI-FUNCTION Door Control Care of Your Opener Once a MonthTwice a Year Once a YearHaving a PROBLEM? Safety reversing sensors wire open broken or disconnected Door control or wire shortedSymptom LED is not lit on door control Symptom Motor unit doesn’t operateTo Add or Reprogram a Hand-held Remote Control Using the Learn Button Using the Door ControlProgramming To Erase All Codes From Motor Unit MemoryTo 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.
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