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 ...
- LiftMaster 3255 | 3255 Manual - Page 2
... door control ...27 To open the door manually ...27 Care of your garage door opener ...28 Having a problem?...29 ...
Rail assembly parts ...33 Installation parts...33 Motor unit assembly ...
Safety Symbol and Signal Word Review
This garage door opener has been designed and ...
- LiftMaster 3255 | 3255 Manual - Page 3
... locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement.
To prevent damage ... opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz to avoid malfunction and ...
- LiftMaster 3255 | 3255 Manual - Page 4
... required. See page 12. Slack in chain tension is normal when garage door is closed.
SECTIONAL DOOR INSTALLATION
Horizontal and vertical reinforcement is needed for.... See page 12.
Slack in chain tension is normal when garage door is closed.
ONE-PIECE DOOR WITH TRACK
- LiftMaster 3255 | 3255 Manual - Page 5
Your garage door opener is packaged in two cartons which contain the motor unit... check the packing material. Parts may be stuck in the foam. Hardware for installation is also listed below.
3245 (1), 3255 (1), 3255-2 (2)
Multi-Function Door Control Panel
- LiftMaster 3255 | 3255 Manual - Page 6
...the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed ...from rail, chain and styrofoam. • REMOVE STYROFOAM. To avoid SERIOUS damage to garage door opener, ... possible SERIOUS INJURY to fingers from moving garage door opener: • ALWAYS keep hand clear of...
- LiftMaster 3255 | 3255 Manual - Page 7
...INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Install garage door opener only on properly balanced and ...opener to avoid entanglement. 5. Install garage door opener 7 feet (2.13 m) or more above floor....clothing while installing or servicing opener. They could be caught in garage door or opener mechanisms....
- LiftMaster 3255 | 3255 Manual - Page 8
...MUST be RIGIDLY fastened to structural support on header wall or ceiling, otherwise garage door might not reverse when required. DO NOT install header bracket over ... is out of balance. An unbalanced garage door might not reverse when required. Installation procedures vary according to ...
- LiftMaster 3255 | 3255 Manual - Page 9
Optional Wall Mounting Holes Vertical Centerline of Garage Door Header Wall
CE ILIN G ... Vertical Centerline of Garage Door
Lag Screw 5/16"-9x1-5/8"
CEILING HEADER BRACKET INSTALLATION •... Finished Ceiling - Header Bracket Vertical Centerline of Garage Door
The nail hole is for positioning ...
- 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
... trolley toward the motor 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 of door.
2x4 is ...
- 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
... the lens. • Use A19, standard neck garage door opener bulbs for replacement. NOTE: Use only ... trolley ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door ... and obstructions. • NEVER use handle to pull door open or closed. If rope knot becomes ...
- LiftMaster 3255 | 3255 Manual - Page 15
...time. To reduce the risk of electric shock, your garage door opener has a grounding type plug with a third grounding pin. This plug will only fit into a...BEFORE removing cover to establish permanent wiring connection. • Garage door installation and wiring MUST be in compliance with ALL ...
- LiftMaster 3255 | 3255 Manual - Page 16
... must be connected and aligned correctly before the garage door opener will move in the down direction. IMPORTANT INFORMATION ABOUT THE ... of sectional garage doors without additional hardware. Be sure power is not connected to the garage door opener BEFORE installing the safety reversing sensor. To ...
- LiftMaster 3255 | 3255 Manual - Page 17
... BRACKETS Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other across the garage door, with the beam no higher than 6" (15 cm...installed in one of three ways, as follows. Garage door track installation (preferred): • Slip the curved ...
- LiftMaster 3255 | 3255 Manual - Page 18
...tighten the wing nuts. • Run the wires from both sensors to the opener. Use insulated staples to secure ...not glow steadily after installation, check for: • Electric power to the opener. • A short in the white or white/.... See page 16.
Connect Wire to Opener Quick-Connect Terminals
- 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 door ... of Garage Door Vertical Reinforcement Vertical Centerline of Garage Door Bolt 5/16"-18x2" UP UP Door Bracket Self...
- LiftMaster 3255 | 3255 Manual - Page 20
... Wall 2x4 Support Finished Ceiling Door Bracket Top of Door (Inside Garage) Top ... HORIZONTAL AND VERTICAL REINFORCEMENT IS NEEDED FOR LIGHTWEIGHT GARAGE DOORS (FIBERGLASS, ALUMINUM, STEEL, ... Centerline of Garage Door
For a door with no exposed framing, or for the optional installation, ...
- LiftMaster 3255 | 3255 Manual - Page 21
INSTALLATION STEP 12
Connect Door Arm to Trolley
Follow instructions which apply to ... SECTIONAL 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
.... The trolley will travel to the fully open position. - Manually raise the door to the open position (parallel ... cycle. If the door has a slight "backward" slant in full open position as shown... and/or jerking operation as the door is being opened or closed from the fully open position.
- LiftMaster 3255 | 3255 Manual - Page 23
... opener through a complete travel cycle. • Does the door open and close completely? • Does ... 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
... the control clockwise. Make small adjustments until door opens completely. Readjust the UP limit if ...increase 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
... to close the door. The door will not move more than an inch (2.5 cm), and the opener lights will flash. The garage door opener will not close from a remote if the indicator light in either sensor is off (alerting you to the fact that the sensor is ...
- LiftMaster 3255 | 3255 Manual - Page 26
...technician. 14. ALWAYS disconnect electric power to garage door opener BEFORE making any repairs or removing....
Using Your Garage Door Opener
Your Security✚® opener and hand-held remote control have... (See Accessories): If provided with your garage door opener, it must be programmed before use. See ...
- LiftMaster 3255 | 3255 Manual - Page 27
... ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open ... handle and lift the door manually. To reconnect the door to the opener, press the door control push ... to prevent operation of the door from hand-held remote controls. However, the door will open and ...
- LiftMaster 3255 | 3255 Manual - Page 28
...trained door systems technician. • Check to be sure door opens and closes fully. Adjust limits and/...see page 7). Once a Year • Oil door rollers, bearings and hinges. The opener does not require ...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
... must be connected and aligned correctly before the garage door opener will move in the down direction. • Verify the safety sensors are properly installed, aligned and...by turning down limit adjustment screw clockwise. 5. My lights will not turn off when door is open: • The...
- LiftMaster 3255 | 3255 Manual - Page 30
... Sensors wire open (broken or disconnected).
Your garage door opener is programmed with self-diagnostic capabilities. The "Learn" button/diagnostic LED will flash a number of... stuck on stop bolt = Motor unit hums briefly; RPM Sensor = Short travel 6-8" (15-20 cm). • ...
- LiftMaster 3255 | 3255 Manual - Page 31
...theft devices, will be circumvented. The owner of the copyright in the garage door opener does not authorize the purchaser... to use.
If provided with your garage door opener, the large button... or compact remote can be programmed to operate other Security✚® garage door openers.
- LiftMaster 3255 | 3255 Manual - Page 32
To Add, Reprogram 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" ...
- LiftMaster 3255 | 3255 Manual - Page 33
Rail Assembly Parts 1 5
KEY NO. PART NO.
4A1008 41A4813 ... rail 10' (3 m) Full chain assembly Rail grease
1 2 3 4
Installation Parts 1 3
LIN... SHOWN 41A2770-6 Installation hardware bag (includes hardware listed on page 5) 114A3080 Owner's manual ...
- LiftMaster 3255 | 3255 Manual - Page 34
... assembly Complete with: Motor, worm, bracket, bearing assembly and RPM sensor
KEY PART NO. NO.
12 13 14 15 16 17 41A5525-24... switch drive and retainer Limit switch assembly Interrupter cup assembly RPM sensor assembly Receiver logic board assy. Complete with: Logic board ...
- 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
... FREE NUMBER:
For professional installation, parts and service, contact your local LIFTMASTER/CHAMBERLAIN dealer. Look for him in the Yellow Pages, or call our Service number for a list of dealers in ...