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Works By Itself
Why does my LiftMaster 3255 myQ WiFi go up and down occasionally by itself? I do not touch anything ...
Why does my LiftMaster 3255 myQ WiFi go up and down occasionally by itself? I do not touch anything ...
(Posted by rileymackallar 10 months ago)
Garage Door Opener Model
How do I know if I have a 3255 or 3255-2M garage door opener?
How do I know if I have a 3255 or 3255-2M garage door opener?
(Posted by ericoster1 3 years ago)
How To Change Light Socket In Liftmaster 3255
(Posted by aziluka 9 years ago)
How Much Is Liftmaster 3255m Garage Opener
(Posted by sepdjmark 9 years ago)
What Is The Price For Liftmaster 3255m
(Posted by bmihab2000 9 years ago)
LiftMaster 3255 Videos
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Popular 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
... garage door opener 28
Having a problem 29
Diagnostic chart 30
Programming
31-32
To add or reprogram a hand-held remote control 31
To erase all codes 31
3-Button remotes 31
To add, reprogram or change a Keyless Entry PIN 32
Repair Parts
33-34
Rail assembly parts 33
Installation parts 33
Motor unit assembly parts 34
Accessories
35
Repair Parts and Service
36
Warranty...
3255 Manual - Page 3
... tools as shown. Sectional Door
One-Piece Door
Tools needed
During assembly, installation and adjustment of balance. Raise and lower the door to avoid entanglement.
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 make sure your garage
door is balanced and is...
3255 Manual - Page 4
... opener. Header Wall
FINISHED CEILING
Support bracket & fastening hardware is needed for details. See page 19 for lightweight garage doors (fiberglass, steel, aluminum, door with the installation of
Safety
door must not exceed 1/4" (6 mm). Planning
Identify the type and height of Garage Door
Extension Spring OR Torsion Spring
Wallmounted Door Control
Access Door
--- --- --
3255 Manual - Page 5
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
Motor Unit with 2-Conductor White & White/Black Bell Wire attached
Safety Labels and
Literature
INSTALLATION HARDWARE
Hex Bolt 5/16"-18x7/8" (4) Lag ...
3255 Manual - Page 7
... of garage door.
12. Upon completion of SEVERE INJURY or DEATH:
1.
READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS.
2. ALL repairs to garage door control.
11. ASSEMBLY STEP 3
Tighten the Chain
• Spin the inner nut and lock washer down the trolley threaded shaft, away from ALL moving parts of Rail
You have now finished assembling your garage door opener.
If...
3255 Manual - Page 11
... will need help at this point. Slide the outer trolley toward the motor unit.
Header Bracket
Top of door. To prevent damage to garage door, rest garage door opener rail on 2x4 placed on its side on the trolley release arm to your door type as illustrated. INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to disconnect inner and outer sections.
3255 Manual - Page 12
... the motor unit to provide rigid support.
This bracket and fastening hardware are shown. Operate the door manually. Attach one end of the rail surface where the trolley slides with 5/16"-18x7/8" hex bolts, lock washers and nuts.
6. NOTE: DO NOT connect power to make sure the rail is not centered above the door).
7. INSTALLATION STEP 5
Hang the Opener
Three representative...
3255 Manual - Page 13
...) of insulation from ALL moving parts of the cover with a small flat head screwdriver (Figure 4). If installing into quick-connect holes: white to white and red/white to motor unit. NOTE: DO NOT connect the power and operate the opener at a minimum height of 5 feet (1.5 m), and away from end of closing garage door: • Install door control within sight of the...
3255 Manual - Page 16
... INFORMATION ABOUT THE SAFETY REVERSING SENSOR
When properly connected and aligned, the sensor will detect an obstacle in the down direction.
The sending eye (with an amber indicator light) transmits an invisible light beam to the garage door opener BEFORE installing the safety reversing sensor. No part of its electronic beam. Be sure power is closing garage door: • Correctly...
3255 Manual - Page 26
... MOVING DOOR.
5. Safety reversal system MUST be turned off as follows: With the opener lights off , then on under EXTREME tension, MUST be programmed before use handle to cables, spring assemblies and other control may be tested every month. Activate your garage door opener, it can close the door with up to move . • The wall-mounted Door Control: Hold the push button or...
3255 Manual - Page 29
... Using the Wall-Mounted Door Control.
• Reprogram remotes following the instructions for flashes on the motor unit then refer to Diagnostic Chart on when the safety sensor beam has been obstructed. Refer to a closed , the chain will move away from the remote control or door control. My lights will not turn off when door is open: • The garage door opener is normal.)
• If...
3255 Manual - Page 30
... replace logic board. Symptom: Motor has over heated;
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 wire. If motor unit activates,
replace door control. • If motor unit does not activate, disconnect door control...
3255 Manual - Page 33
...
Straight door arm section
11 41A5034
Safety sensor kit (receiving and sending eyes) with 3' (.9 m) 2-conductor bell wire
12 41A5266-1 Safety sensor brackets (2)
NOT SHOWN
41A2770-6 Installation hardware bag (includes hardware listed on page 5)
114A3080 Owner's manual
114A3080SP Owner's manual - NO.
Spanish
33 NO. DESCRIPTION
1
4A1008
Master link kit
6
2
41A4813 Chain pulley...
3255 Manual - Page 36
... with the instructions regarding installation, operation, maintenance and testing. WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION:
• PART NUMBER • PART NAME • MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. The proper operation of this limited warranty, will be repaired or replaced with any product returned for warranty repair, which this...
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