LiftMaster 3800 Support Question
LiftMaster 3800 Support Question
Find answers below for this question about LiftMaster 3800.Need a LiftMaster 3800 manual? We have 1 online manual for this item!
Question posted by jebakgard on January 16th, 2014
Why Does Liftmaster 3800 Open By Itself
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Related LiftMaster 3800 Manual Pages
3800 Manual - Page 1
®
GARAGE DOOR OPENER Model 3800
For Residential Sectional Doors With Torsion Assemblies Only
Com Details
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com
patible with
See Page 13 for
Owner's Manual
■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation...
3800 Manual - Page 2
... WAElRecNtriIcNalG
WARNING CAUTION
WARNING When you see this Signal Word on the following pages, it will alert you to the possibility of your garage
WARNING door and/or the garage door opener if you do not comply
with the cautionary statements that accompany it is installed, operated, maintained and tested in strict accordance with the...
3800 Manual - Page 4
..., supported entirely by its springs.
2. CAUTION
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
Tools needed
During assembly, installation and adjustment of the opener, instructions will call for hand tools as shown.
If your...
3800 Manual - Page 5
...garage door opener is missing, carefully check the packing material. If anything is packaged in one carton which contains the motor unit and the parts illustrated below. Note that accessories will depend on the model
purchased. LOCK
LIGHT
LCD Motion Detecting Door...Hardware Bag
2-Conductor Bell Wire White & White/Red
Power Door Lock 2-Conductor White & White/Black Bell Wire with Connector...
3800 Manual - Page 6
....
HARDWARE SHOWN ACTUAL SIZE
Figure 2
RIGHT
Screw #10-32
WRONG Socket Wrench
6
The door may not reverse
correctly or limits may be properly tightened. Ensure that the collar is seated...STEP 1
Attach the Collar to the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
• Loosen the collar screws.
• Attach collar to...
3800 Manual - Page 7
.... Drill 3/16" pilot holes at a right angle to the torsion bar to wall. 6. of SEVERE INJURY or DEATH:
1.
Upon completion of garage door.
11. Reinstall the opener by a trained door systems technician BEFORE installing opener.
4. Use a staple to secure the antenna wire to cut the torsion bar if it is out of operator. An unbalanced...
3800 Manual - Page 8
... places. 6.
INSTALLATION STEP 3
Install Power Door Lock
The lock is used to prevent the garage door from a
CAUTION falling garage door:
• If possible, use emergency release handle unless garage doorway is CLOSED. Drill holes as shown. WARNING
To prevent possible SERIOUS INJURY or DEATH from being manually opened once the door is necessary to cut the rope...
3800 Manual - Page 9
.... The cable tension monitor must have tension through entire travel. Make sure that the cable tension monitor be connected and properly installed before the garage door opener will reverse the door when excessive slack is on opposite side of the cable.
5.
Make sure there is located over a wood support member. INSTALLATION STEP 4
Attach the...
3800 Manual - Page 10
... gang box) as in tab with a staple, creating a short or open position but will travel .
• ALWAYS keep garage door in several places. NOTE: The functional temperature range of bell wire. If... control console push buttons or remote controls.
• Activate door ONLY when it can be mounted to each garage door opener. Scroll speed of insulation from moving parts of bell wire ...
3800 Manual - Page 12
RIGHT
WRONG
If permanent wiring is required by your garage door opener has a grounding type plug with ALL local electrical and building codes.
... Wire
90˚ Connector
12
Be sure the opener is not connected to 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 ...
3800 Manual - Page 14
... beam. INSTALLATION STEP 9
Install The Protector System®
The safety reversing sensor must be connected and aligned correctly before the garage door opener will detect an obstacle in the path of the door as long as the wall framing.
Either can be installed on the wall, the brackets must be securely fastened to the...
3800 Manual - Page 15
...or wood blocks, adjust right and left assemblies at the same distance out from the mounting surface. Garage door track installation (preferred) (Figure 1): • Slip the curved arms over the rounded edge of...cm) above the floor. • Carefully measure and place right and left assemblies to the opener is disconnected. Snap into place against the wall with the lip hugging the back edge of...
3800 Manual - Page 17
...
CAUTION (particularly small children) could be sure fully open ) limit and begins closing garage door. • NEVER learn forces or limits when door is not stopping exactly where you may toggle the door back and forth using the black and purple buttons. Repair door first. • Incorrect adjustment of garage door travel limits:
Adjust the position of the...
3800 Manual - Page 18
... forces required to the UP (open and close your garage door." The door must travel to open ) position. If the unit cannot open and close your door fully, inspect your door to enter unit into Force Adjustment Mode (Figure 2). Door MUST reverse on contact with proper operation of force required to open and close the door.
1. Figure 1 Indicator
Light
Black Button...
3800 Manual - Page 19
... be SERIOUSLY INJURED
or KILLED by a closing garage door.
The door will not move more than an inch, and the opener lights will not close the door.
ADJUSTMENT STEP 3
Test the Safety Reversal System
TEST • With the door fully open the door. • Place the opener carton in the path of the door. • Press the remote control push...
3800 Manual - Page 20
... closed position. • Pull the emergency handle a second time. • Reconnect the door to the opener, pull down the emergency release handle straight down direction. ADJUSTMENT STEP 7
To Open the Door Manually
Disengage door lock before the door begins to disengage door ONLY when garage door is closed. • Pull the emergency release handle. Test the emergency release: •...
3800 Manual - Page 21
..., spring assemblies and other hardware, ALL of children. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
5. Safety reversal system MUST be tested.
9. SAVE THESE INSTRUCTIONS. Using Your Garage Door Opener
Your LiftMaster Security✚® opener and hand-held remote control have been factory programmed to 12 functions, and one Security✚® Keyless...
3800 Manual - Page 24
... the torsion bar is not moving up to the jackshaft. The opener motor hums briefly, then won't work:
• The garage door springs may be opened and closed manually. Disable the power door lock.
12. The door can be broken. See Installation Step 9.
• If the opener lights don't blink and it rotates.
• Check that all...
3800 Manual - Page 31
.... Tells you are away from anywhere in their home with an additional LiftMaster Security✚® remote.
378LM
Wireless Door Control:
Push bar, light feature and auxiliary button.
Includes battery.
LOCK
LIGHT
915LM
CLOSED OPEN
Garage Door Monitor:
Security for the largest door of hours or entries.
373LM 370LM
3-Button Security✚® Remote Control: Includes...
3800 Manual - Page 32
... replaced with the instructions regarding installation, operation, maintenance and testing.
Country Club Road
Tucson, Arizona 85706
SERVICE INFORMATION TOLL FREE NUMBER:
1-800-528-9131
LIFTMASTER® GARAGE DOOR OPENER FIVE-YEAR LIMITED WARRANTY LIFETIME MOTOR LIMITED WARRANTY
The Chamberlain Group, Inc. ("Seller") warrants to you and returned pre-paid and insured, to you . The...
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