LiftMaster 3850 Support Question
LiftMaster 3850 Support Question
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Question posted by conro on May 17th, 2014
How To Replace Liftmaster Garage Door Opener, Motor And Travel Module
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Related LiftMaster 3850 Manual Pages
3850 Elite Series Manual - Page 1
...;
GARAGE DOOR OPENER Models 3850
3850-267
For Residential Use Only
Com Details
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com
patible with
See Page 29 for
Owner's Manual
■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door...
3850 Elite Series Manual - Page 2
... 36
Motor unit assembly parts 37
Accessories
38
Notes
39
Repair Parts and Service
40
Warranty
40
INTRODUCTION Safety Symbol and Signal Word Review
This garage door opener has ...travel limits 23 Set the force 24 Test the safety reversal system 25 Test the Protector System 25
Operation
26-33
Operation safety instructions 26
Using garage door opener 26
Using the wall-mounted door...
3850 Elite Series Manual - Page 3
... prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician. 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 malfunction and damage. Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes...
3850 Elite Series Manual - Page 5
... LOCK
LIGHT
SLmCaDrtMCootniotrnolDPeatencetli®ng Door Control Console
SECURITY✚® 3-Button Remote Control
Models 3850 (1) 3850-267 (2)
SECURITY✚® Keyless Entry Model 3850-267 (1) ONLY
Motor Unit with Light Lenses
2-Conductor ...Rail Grease Carriage Bolt 1/4"-20x1/2" (2) Wing Nut 1/4"-20 (2)
5 Carton Inventory
Your garage door opener is packaged in the foam.
3850 Elite Series Manual - Page 6
...; Insert both washered bolts through the rail into one of motor unit. • Align rail and styrofoam over the motor unit belt pulley. ASSEMBLY STEP 1 Attach the Rail to the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed to door opener. • Position belt over belt pulley. Washered Bolt 5/16"-18x1...
3850 Elite Series Manual - Page 7
... Screws
HARDWARE SHOWN ACTUAL SIZE
Hex Screw #8x3/8"
WARNING
Belt Cap Retainer
Motor Unit Belt Pulley Mounting Plate
WARNING
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS WARNING
To reduce the risk of the door.
10. You have now finished assembling your garage door opener. Install garage door opener ONLY on wall next to fingers from electrocution, disconnect ALL electric and battery...
3850 Elite Series Manual - Page 11
... section beneath the rail.
• If the top section or panel hits the trolley when you raise the door, pull down on top section of the motor unit. To prevent damage to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to disconnect inner and outer sections.
Header Bracket
Top of...
3850 Elite Series Manual - Page 12
... the motor unit to make sure the rail is not centered above the door). 7. Figure 1
Measure Distance Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18
Structural Supports
Lag Screws 5/16"-18x1-7/8"
Figure 2
Bracket (Not Provided)
Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18
Hidden Support
- Measure the distance from a falling garage door opener...
3850 Elite Series Manual - Page 13
... motor unit. Use insulated staples to secure wire in place (Figure 1).
3. (For standard installations ONLY) Run bell wire up wall and across ceiling to each garage door opener.
Adjust screw for snug fit.
• Drill and install top screw with the operation of the buttons, loosen the top mounting screw. DO NOT overtighten.
• Replace...
3850 Elite Series Manual - Page 14
... the lens.
• Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. NOTE: Use only standard light bulbs. Use ONLY incandescent. To prevent damage to
corresponding terminals on battery. • Verify the battery wires are seated in the channel. • Replace battery cover. Channel
Battery
Battery Cover
INSTALLATION...
3850 Elite Series Manual - Page 15
... 6 feet (1.8 m) above the floor. To make it is required by your garage door opener has a grounding type plug with a third grounding pin. and the ground wire to disengage
trolley ONLY when garage door is clear of the motor unit:
• Remove the motor unit cover screws and set the cover aside.
• Remove the attached 3-prong cord...
3850 Elite Series Manual - Page 16
...The sending eye (with an amber indicator light) transmits an invisible light beam to the garage door opener BEFORE installing the safety reversing sensor. Be sure power is not connected to the receiving...sensor.
This required safety device MUST NOT be connected and aligned correctly before the garage door opener will flash 10 times. The invisible light beam path must be installed on ...
3850 Elite Series Manual - Page 24
...it , repeat Program the Travel Limits. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.
• Too much force on floor. Push the door control or programmed remote control a third time to close the door.
1. If the garage door opener cannot open and close the door (DOWN). Figure 1
n n
LED...
3850 Elite Series Manual - Page 25
... more than 6" (15 cm) above the floor), call for a trained door systems technician. NOTE: On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down direction. If the opener closes the door when the safety reversing sensor is not traveling far enough in the down position.
The garage door opener will flash.
3850 Elite Series Manual - Page 26
... for 10 seconds until the door starts to door travel limits) is CLOSED. When the opener is misaligned, the door won't close .
5. If obstructed while opening, the door will stop .
7. If you could fall.
9. The opener lights will reverse. when the opener is 100 watts maximum. Bulb power is activated. ALWAYS keep garage door in a partially open garage door. NO ONE SHOULD CROSS THE...
3850 Elite Series Manual - Page 31
...replace the battery.
31 Trolley
4. My door reverses for flashes on motor unit then refer to Adjustment Step 2, Setting the force.
• Run the motor unit from the bolt, repeat the steps above.
7. Using the Wall-Mounted Door Control, Light Feature.
6. My garage door opener... Step 1, Program the Travel Limits. Bell Wire
Diagnostics Located On Motor Unit
Safety Reversing Sensor
Sending...
3850 Elite Series Manual - Page 32
... then pause signifying it has found a potential issue. Symptom: Door travels 2-3 inches and stops. • Reprogram limits and forces. Bell Wire
Safety Reversing Sensor
Diagnostic Chart
Diagnostics Located On Motor Unit
"Learn" Button LED or Diagnostic LED "Learn" Button
Installed Safety Reversing
Sensor
Your garage door opener is dim or flashing. • Realign receiving eye sensor...
3850 Elite Series Manual - Page 34
... wish to operate other Security✚® garage door openers.
34 LOCK
LIGHT
LOCK
LIGHT
4. The door will be heard.
*3-Button Remotes (315 MHz)
If provided with your garage door opener, the large button is operated with additional 315 MHz Security✚® remote controls. To Erase All Codes From Motor Unit Memory
To deactivate any Security✚...
3850 Elite Series Manual - Page 35
... garage door opener. NOTE: This method requires two people if the Keyless Entry is known, it has learned the code. Within 30 seconds, enter a four digit personal identification number (PIN) of accesses, this feature press and hold the ✽ button. To set to a certain number of hours (up to 255), then press #. The motor...
3850 Elite Series Manual - Page 38
...garage door opener from outside by adding additional sensor modules.
485LM
395LM
Remote Light Control :
Enables homeowner to open or closed. Tells you if your home! Monitors up to 4 garage doors...protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. ACCESSORIES
1702LM
Outside Quick Release:
Required for a garage with NO access door. ...
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