LiftMaster 3850 Support Question
LiftMaster 3850 Support Question
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Question posted by muscchaso on January 26th, 2014
How To Shorten T-rail Liftmaster 3850
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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
... or change a Keyless Entry PIN 35
Repair Parts
36-37
Rail assembly parts 36
Installation parts 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 been designed and tested to the possibility of damage...
3850 Elite Series Manual - Page 3
... by its springs.
2.
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. Sectional Door
One-Piece Door
Tools needed
During assembly, installation and adjustment of balance. Preparing your garage door
Before you begin:
• Disable locks.
•...
3850 Elite Series Manual - Page 5
...garage door opener is packaged in the foam. LOCK
LIGHT
SLmCaDrtMCootniotrnolDPeatencetli®ng Door Control Console
SECURITY✚® 3-Button Remote Control
Models 3850 (1) 3850-267 (2)
SECURITY✚® Keyless Entry Model 3850...Staples (10) Ring Fastener (3) Dry Wall Anchors (2) Rope Handle Rail Grease Carriage Bolt 1/4"-20x1/2" (2) Wing Nut 1/4"-20 (2)
5 If anything is...
3850 Elite Series Manual - Page 6
ASSEMBLY STEP 1 Attach the Rail to the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts mounted on top of the nut ring slots and brace it is finger tight ...
3850 Elite Series Manual - Page 7
..., disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.
7 Install garage door opener ONLY on wall next to do so.
8. Install garage door opener 7 feet (2.1 m) or more above floor.
7. NEVER connect garage door opener to power source until instructed to garage door control.
11. Upon completion of SEVERE INJURY or DEATH:
1.
Install wall-mounted...
3850 Elite Series Manual - Page 11
... for setting an ideal door-to-rail distance.
• Raise the opener onto a stepladder. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK
A 2x4 laid flat is completed.
You will need help at this point if the ladder is used to determine the correct mounting height from ceiling. To prevent damage to garage door, rest garage door opener rail on 2x4 placed...
3850 Elite Series Manual - Page 12
... Provided)
Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18
Hidden Support
- FINISHED CEILING - Measure the distance from a falling garage door opener, fasten it SECURELY to required lengths. 3. Attach one end of the rail surface where the trolley slides with 5/16"-18x7/8"
hex bolts, lock washers and nuts. 6. Concrete anchors MUST be different. Fasten...
3850 Elite Series Manual - Page 13
.../red 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. DO NOT overtighten.
• Replace cover by gently prying at the lower/middle portion of door control by color: white wire to the W (2) and white/red wire to the full...
3850 Elite Series Manual - Page 14
... only standard light bulbs. Then the lights will turn OFF.
• Reverse the procedure to the opener: • DO NOT use bulbs larger than 100W. • ONLY use A19 size bulbs. Light... compartment. To prevent damage to close the lens.
• Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected. Do not remove the lens.
• Install...
3850 Elite Series Manual - Page 15
... this time. To reduce the risk of the red handle so "NOTICE" reads right side up as shown. Be sure the opener is required by your garage door opener has a grounding type plug with a match or lighter to the following procedure.
Secure with an overhand knot. Overhand Knot
Emergency Release Handle
Rope
NOTICE
Trolley...
3850 Elite Series Manual - Page 16
... REVERSING SENSOR
When properly connected and aligned, the sensor will move in the down direction. Either can be installed inside the garage. Be sure power is necessary to the garage door opener BEFORE installing the safety reversing sensor. If it is not connected to mount the units on the left or right of sectional...
3850 Elite Series Manual - Page 24
... button twice to enter into Force Adjustment Mode
LED Black Button Purple Button
Figure 3
or
LOCK
LIGHT
24 The LED will flash quickly.
2. If the garage door opener cannot open and close (DOWN).
3.
Figure 1
n n
LED
Black Button Purple Button
Figure 2
Push Purple button twice to enter unit into the Force Adjustment Mode. Without a properly...
3850 Elite Series Manual - Page 25
... that the sensor is not traveling far enough in the down direction. The garage door opener will flash.
Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.
If the opener closes the door when the safety reversing sensor is obstructed (and the sensors are made, the...
3850 Elite Series Manual - Page 26
... (See Accessories): If provided with 1-1/2" (3.8 cm) high object (or a 2x4 laid flat) on contact with your garage door opener, it will stop .
7. ALL repairs to disengage trolley ONLY when garage door is 100 watts maximum. If fully open garage door. when the opener is A19. Safety reversal system MUST be tested.
11. when power is restored after 4-1/2 minutes or...
3850 Elite Series Manual - Page 31
... "Lock Mode." If the trolley re-engages with a security light feature. My garage door opener beeps: • A solid LED with beep, sounding approximately every 2 seconds, indicates the motor unit is activating the door and is operating off when door is open: • The garage door opener is normal. Refer to Diagnostic Chart on my motor
unit: The safety reversing...
3850 Elite Series Manual - Page 32
...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, clean lens and secure brackets....
• Disconnect all wires from back of motor unit.
• Remove sensors from brackets and shorten sensor wires to 1-2 ft (30-60 cm) from back each of times then pause signifying it...
3850 Elite Series Manual - Page 34
...-remote can be heard.
*3-Button Remotes (315 MHz)
If provided with your garage door opener, the large button is operated with a non-rolling code remote control, the technical measure in the garage door opener does not authorize the purchaser or supplier of the garage door opener, which provides security against code-theft devices, will be circumvented. All previous codes...
3850 Elite Series Manual - Page 35
... button again to confirm Learn Mode.
To set to a certain number of openings, remember that the test has used to close is already mounted outside the garage.
1. Release the button.
4. Press the temporary 4-digit PIN you have chosen... seconds, enter a four digit personal identification number (PIN) of your garage door opener. Release the button when the motor unit lights blink.
3850 Elite Series Manual - Page 38
... visitors or service persons.
Includes battery. Laser Park Assist: Laser enables homeowners to protect LiftMaster® garage door openers against damage from lightning and power surges.
38 Surge Protector: The Garage Door Opener Surge Protector is open garage door manually from outside by disengaging trolley.
373P
41A5281
Extension Brackets:
(Optional) For safety reversing...
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