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LiftMaster 3255 Support Question

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Question posted by billchua on September 1st, 2012

Power Head Replacement

I am currently using a Legacy Chain Drive 1/3 hp Model 496CD/b garage door opener power head. Can the Liftmaster 3255 replace my unit?

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Related LiftMaster 3255 Manual Pages

3255 Manual - Page 1

® GARAGE DOOR OPENER Models 3245 1/3 HP 3255 1/2 HP 3255-2 1/2 HP For Residential Use Only The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com Owner's Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door WILL NOT CLOSE unless the ...

3255 Manual - Page 2

... your garage door 3 Tools needed 3 Planning 4 Carton inventory 5 Hardware inventory 5 Assembly 6-7 Attach the rail to the motor unit 6 Attach the chain to the sprocket 6 Tighten the chain 7 Installation 7-22 Installation safety instructions 7 Determine the header bracket location 8 Install the header bracket 9 Attach the rail to the header bracket 10 Position the opener...

3255 Manual - Page 3

... place, supported entirely by its springs. 2. Release the door. To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz to avoid entanglement. Lift the door about halfway as illustrated below. Preparing your garage door is balanced and is out of balance. An unbalanced...

3255 Manual - Page 4

... the type and height of your opener. You may be required. See page 12. ONE-PIECE DOOR WITHOUT TRACK Header Wall Slack in chain tension is normal when garage door is required. Motor Unit Wallmounted Door Control Access Door ONE-PIECE DOOR WITH TRACK Slack in chain tension is normal when garage door is required. Survey your garage area to this page and...

3255 Manual - Page 5

... depend on the model purchased. Carton Inventory Your garage door opener is packaged in the foam. is missing, carefully check the packing material. contain the motor unit and all parts illustrated below . 3245 (1), 3255 (1), 3255-2 (2) LOCK LIGHT Multi-Function Door Control Panel : SECURITY ® Single-Button Remote Control Remote Control Visor Clip Chain Sprocket Cover Styrofoam...

3255 Manual - Page 7

..., re-tighten the inner nut to do not re-adjust the chain. Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing opener to cables, spring assemblies and other hardware MUST be caught in the direction shown (Figure 1). NEVER connect garage door opener to power source until instructed to secure the adjustment. ASSEMBLY STEP 3 Tighten...

3255 Manual - Page 12

... from a falling garage door opener, fasten it SECURELY to structural supports of the motor unit to a support with rail grease. Operate the door manually. Fasten the opener to make sure the rail is not centered above the door). 7. Cut both pieces of the hanging bracket to structural supports before installing the opener. Yours may be used if installing any...

3255 Manual - Page 13

... to cross path of closing garage door: • Install door control within sight of the door at a minimum height of 5 feet (1.5 m) where small children cannot reach, and away from moving parts of door. • NEVER permit children to operate or play with a small flat head screwdriver (Figure 4). NEVER permit anyone to the opener, twist same color wires...

3255 Manual - Page 14

The light will turn ON and remain lit for replacement. Ensure that the rope and handle clear the tops of lens. NOTE: If it... Then the lights will turn OFF. • Reverse the procedure to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is necessary to cut the rope, heat seal the cut end with a match or lighter to prevent...

3255 Manual - Page 15

...opener is required by your garage door opener has a grounding type plug with ALL local electrical and building codes. • NEVER use... unit: • Remove the motor unit cover...power is not connected to the opener, and disconnect power to circuit BEFORE removing cover to the screw on the brass terminal; the white (neutral) wire to establish permanent wiring connection. • Garage door...

3255 Manual - Page 16

.... Be sure power is necessary. The mounting brackets are available if needed. The units must be disabled. • Install the safety reversing sensor so beam is closing garage door: • ...before the garage door opener will move in masonry if repositioning is not connected to clip onto the track of the garage door (or door tracks, springs, hinges, rollers or other across the door, no ...

3255 Manual - Page 17

...garage door, with the beam no higher than 6" (15 cm) above the floor. • Attach brackets to wall with lag screws (not provided). • If using...Be sure power to ...door. Figure 1 DOOR TRACK MOUNT (RIGHT SIDE) Door Track Lip Indicator Light Sensor Bracket Lens Figure 2 IGWnasairldal ege WALL MOUNT (RIGHT SIDE) Fasten Wood Block to the opener is recommended. Make sure all door...

3255 Manual - Page 18

...for : • Electric power to the opener. • A short in...door is already open wire to the receiving eye. 3. The opener lights will glow regardless of insulation from both the sending and receiving eyes will not close. Use...opener. If the green indicator light in the opener. See page 16. MOUNTING AND WIRING THE SAFETY REVERSING SENSORS • Slide a 1/4"-20x1/2" carriage bolt head...

3255 Manual - Page 24

... required to close garage door. • NEVER use force adjustments to compensate for a binding or sticking garage door. • If one control (force or travel limits) is adjusted, the other control may be needed. Turn force adjustment controls with 1-1/2" high (3.8 cm) object (or 2x4 laid flat) on floor. Make small adjustments until door opens completely. Make small...

3255 Manual - Page 26

... If the obstruction interrupts the sensor beam, the opener lights will stop . 7. If you wish to pull garage door open garage door. Bulb power is activated (with your opener with any repairs or removing covers. 15. NEVER use handle to deactivate any remote, follow the instructions in an open . 2. Activate your garage door opener, it will stop . 4. The sensor has no obstructions...

3255 Manual - Page 28

... be sure door opens and closes fully. Insert battery positive side up to Comply with only 3V2032 coin cell batteries. Twice a Year • Check chain tension. Adjust limits and/or force if necessary (see Adjustment Step 3). Do not grease the door tracks. The lithium battery should produce power for changing the code setting or replacing the...

3255 Manual - Page 29

... turn off when door is open: • The garage door opener is equipped with the door, pull the Emergency Release Rope to disengage. • Decrease the UP travel . • Manually check door for flashes on motor unit then refer to Installation Step 10: Install The Protector System®. • Check diagnostic LED for Using the Wall-Mounted Door Control. •...

3255 Manual - Page 30

... 6-8" (15-20 cm), replace RPM sensor. • If motor unit doesn't operate, motor unit is not lit on the safety sensors do not light, replace the safety sensors. Bell Wire Diagnostics Located On Motor Unit Safety Reversing Sensor LED or Diagnostic LED "Learn" Button Diagnostic Chart Installed Safety Reversing Sensor Your garage door opener is programmed with jumper...

3255 Manual - Page 35

...garage doors by entering a password on a lamp, television or other appliance from lightning and power surges. 35 Includes battery. Surge Protector: The Garage Door Opener Surge Protector is open garage door... protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. Also can be limited to a programmable number of your garage door is ...

3255 Manual - Page 36

... LIFTMASTER/CHAMBERLAIN dealer. Some States do not allow limitations on request or parts will be advised of this product, for him in which vary from the date of purchase]. THIS LIMITED WARRANTY DOES NOT COVER ANY PROBLEMS WITH, OR RELATING TO, THE GARAGE DOOR OR GARAGE DOOR HARDWARE, INCLUDING BUT NOT LIMITED TO THE DOOR SPRINGS, DOOR...