LiftMaster 3850 Support Question
LiftMaster 3850 Support Question
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Question posted by wwbcoven on October 9th, 2014
How To Replace Motor In 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
... 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 offer safe service provided it . TABLE OF...
3850 Elite Series Manual - Page 3
.... 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 the opener, instructions will call a trained door systems technician if garage door binds, sticks, or is...
3850 Elite Series Manual - Page 5
...®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 ... cartons which contain the motor unit and all parts illustrated below .
Accessories will depend on the model purchased. Carton Inventory
Your garage door opener is packaged in the foam.
3850 Elite Series Manual - Page 6
... trolley (Figure 3). To avoid SERIOUS damage to opener, ONLY use any other bolts will cause serious damage to door opener. • Position belt over belt pulley. Use only these bolts!
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...
3850 Elite Series Manual - Page 7
...
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 garage door.
12. NEVER connect garage door opener to power source until instructed to the installation section. Door MUST reverse on inside of SEVERE INJURY or DEATH:
1. You have...
3850 Elite Series Manual - Page 11
... 12 is used to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to -rail distance.
• Raise the opener onto a stepladder. INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to this height.
• The top of the door should be level with the top of the motor unit.
ENGAGED
Trolley Release...
3850 Elite Series Manual - Page 12
... opener. Operate the door manually. Cut both pieces of the motor unit to make sure the rail is not centered above the door). 7.
Yours may be used if installing ANY brackets into masonry. This bracket and fastening hardware are shown.
Check to the structural support. 2.
Measure the distance from a falling garage door opener, fasten it SECURELY to opener...
3850 Elite Series Manual - Page 13
...motor unit. To prevent possible SERIOUS INJURY or DEATH from a closing garage door. HARDWARE SHOWN ACTUAL SIZE
Screw 6ABx1-1/4" (standard installation)
Insulated Staples
Screw 6-32x1" (pre-wired)
Drywall Anchors
Figure 1
REMOVE COVER
REPLACE COVER
To Replace...exposure of the door control to temperatures below -22° F (-30° C) may be connected to each garage door opener. DO NOT ...
3850 Elite Series Manual - Page 14
....
• Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is connected.
Light bulb size should be A19, standard neck only. The lights will turn ON and remain lit for replacement.
INSTALLATION STEP 7 Install the EverCharge® Standby Power System (optional)
• Make sure motor unit is unplugged. • Using a Phillips...
3850 Elite Series Manual - Page 15
... is required by your garage door opener has a grounding type plug with ALL local electrical and building codes.
• NEVER use an extension cord, 2-wire adapter, or change plug in ANY way to make a permanent connection through the 7/8" (2 cm) hole in the top of the motor unit:
• Remove the motor unit cover screws and...
3850 Elite Series Manual - Page 16
... installed inside the garage. above floor
Invisible Light Beam Protection Area
Facing the door from a closing , the door will stop and reverse to avoid drilling extra holes in the path of sectional garage doors without additional hardware. The sending eye (with an amber indicator light) transmits an invisible light beam to the garage door opener BEFORE installing the...
3850 Elite Series Manual - Page 24
... measures the amount of safety reversal system.
• NEVER use force adjustments to compensate for the force to be set properly. If the garage door opener cannot open and close the door.
1.
Without a properly installed safety reversal system, persons (particularly small children) could be tested. Figure 1
n n
LED
Black Button Purple Button
Figure 2
Push Purple button...
3850 Elite Series Manual - Page 25
The garage door opener will not close from a remote if the indicator light in the path of the door.
• Press the remote control push button to or adjustment of the garage floor.
• Any repair to close the door. Complete Adjustment Steps 1 and 2 Program the Travel Limits and Set the Force.
See Figure 3, page 21.
•...
3850 Elite Series Manual - Page 26
...'t close when the beam is 100 watts maximum.
Activate your opener with your garage door opener, it will reverse. If open position, it is properly adjusted, and there are no effect in a partially open , the door will reverse.
3. If the door has been stopped in the opening , the door will not close from a hand-held remote control have been factory...
3850 Elite Series Manual - Page 31
...the motor unit is activating the door and is operating off when door is open: • The garage door opener is normal.
My door reverses for flashes on the following the programming instructions. My motor unit...position. • Loosen the belt by a beep sounding every 30 seconds, replace the battery.
31 My door reverses for the force and limit settings is approximately 1-1/4" (3.18 cm) ...
3850 Elite Series Manual - Page 32
...; If motor unit does not activate, disconnect door control wires from the door control. • Inspect door control/wires for the sensors. If motor unit activates, replace door control wires.
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...
3850 Elite Series Manual - Page 34
... the large push button.
LOCK
LIGHT
LOCK
LIGHT
4. When the motor unit lights blink, it . PROGRAMMING
NOTICE: If this Security✚® garage door opener is factory programmed to operate other Security✚® garage door openers.
34 The door will open and close when you wish to operate your garage door.
3. Press the PROG button on the hand-held Remote...
3850 Elite Series Manual - Page 35
... times to operate your choice on the keypad. Press the PROG button on motor unit. Release the # button.
2.
The opener light will work , press the number of hours (up one button close...confirm Learn Mode. Enter a four digit personal identification number (PIN) of your garage door opener. The door should move . Within 30 seconds, enter a four digit personal identification number ...
3850 Elite Series Manual - Page 38
... : Includes visor clip. Includes battery. EverCharge® Standby Power System: Provides backup power to open or closed.
ACCESSORIES
1702LM
Outside Quick Release:
Required for a garage with model 3850 only. Monitors up to protect LiftMaster® garage door openers against damage from outside by adding additional sensor modules.
485LM
395LM
Remote Light Control :
Enables...
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