LiftMaster 3255 manual table of contents:
- LiftMaster 3255 | 3255 Manual - Page 1
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com
GARAGE DOOR OPENER Models 3245 1/3 HP 3255 1/2 HP 3255-2 1/2 HP
For Residential Use Only
Please read this manual and the enclosed safety ...
- LiftMaster 3255 | 3255 Manual - Page 2
... safety instructions ...26 Using your garage door opener...26 Using the wall-mounted door control ...27 To open the door manually ...27 Care of your garage door opener ...28 Having a ...
Safety Symbol and Signal Word Review
This garage door opener has been designed and tested...
- LiftMaster 3255 | 3255 Manual - Page 3
...• NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or ...garage door BEFORE installing and operating garage door opener to avoid entanglement.
To prevent damage to ... BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz ...
- LiftMaster 3255 | 3255 Manual - Page 4
...is required. See page 12. Slack in chain tension is normal when garage door is closed.
SECTIONAL DOOR ...page 12.
Slack in chain tension is normal when garage door is closed.
ONE-PIECE DOOR WITH TRACK
Wallmounted Door Control Access Door
Slack in chain tension is normal when garage door...
- LiftMaster 3255 | 3255 Manual - Page 5
Your garage door opener is packaged in two cartons which contain the motor unit and all parts...be stuck in the foam. Hardware for installation is also listed below.
3245 (1), 3255 (1), 3255-2 (2)
Multi-Function Door Control Panel
SECURITY ® Single-Button...
- LiftMaster 3255 | 3255 Manual - Page 6
... avoid installation difficulties, do not run the garage door opener until instructed to do so. •...from rail, chain and styrofoam. • REMOVE STYROFOAM. To avoid SERIOUS damage to garage door opener, use... possible SERIOUS INJURY to fingers from moving garage door opener: • ALWAYS keep hand clear of ...
- LiftMaster 3255 | 3255 Manual - Page 7
... FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Install garage door opener only on properly balanced and ... floor. 7. NEVER connect garage door opener to power source until instructed to do so. 8.... could be caught in garage door or opener mechanisms. 9. Install wall-mounted garage door control: ...
- LiftMaster 3255 | 3255 Manual - Page 8
... MUST be RIGIDLY fastened to structural support on header wall or ceiling, otherwise garage door might not... procedures vary according to garage door types. Follow the instructions which apply to your ... door and mark the inside vertical centerline of the garage door. 2. Extend the line onto the header ...
- LiftMaster 3255 | 3255 Manual - Page 9
You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the instructions which will work best for your particular requirements. ... bracket.
Optional Wall Mounting Holes Vertical Centerline of Garage Door Header Wall
CE ILIN G MO UN...
- LiftMaster 3255 | 3255 Manual - Page 10
...Wall Header Bracket Chain Pulley Bracket
Ring Fastener Header Bracket
Clevis Pin 5/16"x2-3/4" Chain Pulley Bracket
Rail Garage Door
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin 5/16"x2-3/4"
- LiftMaster 3255 | 3255 Manual - Page 11
.... You will need help at this point if the ladder is not tall enough. • Open the door all the way and place a 2x4 laid flat ...unit. The trolley can remain disconnected until Installation Step 12 is completed. To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section ...
- LiftMaster 3255 | 3255 Manual - Page 12
... power to opener at this time. 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.
- LiftMaster 3255 | 3255 Manual - Page 13
... control, and manual release/safety reverse test label in a prominent location on inside of garage door. NOTE: DO NOT connect the power and operate the opener at this ...To prevent possible SERIOUS INJURY or DEATH from a closing garage door: • Install door control within sight of ...
- LiftMaster 3255 | 3255 Manual - Page 14
... OFF. • Reverse the procedure to close the lens. • Use A19, standard neck garage door opener bulbs for replacement. NOTE: Use only standard light bulbs... disengage trolley ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door falling ...
- LiftMaster 3255 | 3255 Manual - Page 15
... this time. To reduce the risk of electric shock, your garage door opener has a grounding type plug with a third grounding ... the opener, and disconnect power to circuit BEFORE removing cover to establish permanent wiring connection. • Garage door installation and wiring MUST be in compliance with ...
- LiftMaster 3255 | 3255 Manual - Page 16
...connected and aligned correctly before the garage door opener will move in the down direction. IMPORTANT ...additional hardware. Be sure power is not connected to the garage door opener BEFORE installing the safety ... path must be unobstructed. No part of the garage door (or door tracks, springs, hinges,...
- LiftMaster 3255 | 3255 Manual - Page 17
... so the sensors will face each other across the garage door, with the beam no higher than 6" (...They may be installed in one of three ways, as follows. Garage door track installation (preferred): • Slip the ... track, as shown in Figure 1. If your door track will not support the bracket securely, wall ...
- LiftMaster 3255 | 3255 Manual - Page 18
... nuts. • Run the wires from both sensors to the opener. Use insulated staples to secure wire ... 6). ALIGNING THE SAFETY REVERSING SENSORS • Plug in the opener. The indicator lights in both the sending and... will reverse. If the door is already open, it will not close. The opener lights will blink 10...
- LiftMaster 3255 | 3255 Manual - Page 19
... used to create a U-shaped support. The best solution is to check with your garage door manufacturer for an opener installation door reinforcement kit. NOTE: Many ... Reinforcement Vertical Centerline of Garage Door Bolt 5/16"-18x2" UP UP Door Bracket Self-Threading Screw 1/4"-14x5/8"...
- LiftMaster 3255 | 3255 Manual - Page 20
... of Door Bracket HORIZONTAL AND VERTICAL REINFORCEMENT IS NEEDED FOR LIGHTWEIGHT GARAGE DOORS (FIBERGLASS, ALUMINUM, STEEL, DOORS WITH ...16"x2" (Not Provided)
Vertical Centerline of Garage Door
For a door with no exposed framing, or for the optional installation, use lag screws 5/16"x1...
- LiftMaster 3255 | 3255 Manual - Page 21
INSTALLATION STEP 12
Connect Door Arm to Trolley
Follow instructions which apply to your door ... DOORS ONLY • Make sure garage door is fully closed. Pull the emergency release handle to ...and nuts. • Pull the emergency release handle toward the opener at a 45° angle so that the trolley release arm ...
- LiftMaster 3255 | 3255 Manual - Page 22
... as shown on page 23. Follow adjustment procedures below. • Open door adjustment: decrease UP travel limit - Turn the...-clockwise 4 turns. - Press the Door Control push button. The trolley will travel to the fully open position. - Manually raise the door to the open position (parallel to the floor),...
- LiftMaster 3255 | 3255 Manual - Page 23
... stop when moving up or down. To operate the opener, press the Door Control push bar. Run the ... 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 ...
- LiftMaster 3255 | 3255 Manual - Page 24
... (open) force by turning the control clockwise. Make small adjustments until door opens completely. Readjust ... force beyond minimum amount 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...
- LiftMaster 3255 | 3255 Manual - Page 25
... a 1-1/2" (3.8 cm) board (or a 2x4 laid flat) on the floor, centered under the garage door. • Operate ... 4
Test The Protector System®
• Press the remote control push button to open the door. • Place ... lights will flash. The garage door opener will not close from a remote if the indicator light ...
- LiftMaster 3255 | 3255 Manual - Page 26
... or removing covers. 15.
SAVE THESE INSTRUCTIONS.
Using Your Garage Door Opener
Your Security✚® opener and hand-held remote control have been factory-... on when someone walks through the open garage door. With a Multi-Function Door Control, this feature may be turned off...
- LiftMaster 3255 | 3255 Manual - Page 27
To Open the Door Manually
Push Button Lock Button
Light Light feature... ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door... handle and lift the door manually. To reconnect the door to the opener, press the door control push ...
- LiftMaster 3255 | 3255 Manual - Page 28
...a trained door systems technician. • Check to be sure door opens and closes fully. Adjust limits and/or... (see page 7). Once a Year • Oil door rollers, bearings and hinges. The opener does not ... not grease the door tracks. To replace battery, use the visor clip or screwdriver blade to pry open the ...
- LiftMaster 3255 | 3255 Manual - Page 29
...my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. • Verify the ... when door is open: • The garage door opener is equipped with a security light feature. This feature activates the light on ...
- LiftMaster 3255 | 3255 Manual - Page 30
...Reversing Sensors wire open (broken or disconnected).
Your garage door opener is programmed with self-diagnostic capabilities. The "Learn" button/diagnostic LED... Motor unit doesn't operate. • Replace logic board because motor rarely fails.
Door control or wire shorted.
- LiftMaster 3255 | 3255 Manual - Page 31
NOTICE: If this Security✚® garage door opener is operated with a non-rolling code transmitter, the technical measure in the receiver of the garage door opener, which provides security against... to circumvent that technical measure. Your garage door opener has already been programmed...
- LiftMaster 3255 | 3255 Manual - Page 32
...or Change a Keyless Entry PIN
NOTE: Your new Keyless Entry must be programmed to operate your garage door opener. USING THE "LEARN" BUTTON USING THE MULTI-FUNCTION DOOR CONTROL
1. Press and release the "learn" button on ...
- LiftMaster 3255 | 3255 Manual - Page 33
... 10A20 29B137 41A2828
6 10 8 11 9
6 7 8 9 10 11 12
Multi-function door control panel 1 Button remote ... bracket with clevis pin and fastener 41A5047 Door bracket with clevis pin and fastener 178B35 ... door arm section 178B34 Straight door arm section 41A5034 Safety sensor kit (...
- LiftMaster 3255 | 3255 Manual - Page 34
Center Limit Contact
KEY PART NO.... Interrupter cup assembly RPM sensor assembly Receiver logic board assy. Complete with: Logic board and end panel with all labels Low voltage wire harness... SHOWN Motor shaft bearing kit Opener assembly hardware kit (includes screws...
- LiftMaster 3255 | 3255 Manual - Page 35
... with NO access door. Enables homeowner to open garage door manually from outside by disengaging ... Entry: Enables homeowner to operate garage door opener from outside by entering a password on a specially... Remote Control with Security✚®: Includes visor clip.
Surge Protector: The Garage Door Opener...
- LiftMaster 3255 | 3255 Manual - Page 36
..., parts and service, contact your local LIFTMASTER/CHAMBERLAIN dealer. Look for him in the Yellow Pages, or call our Service number ... 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 ROLLERS...