LiftMaster 3850 Support Question
LiftMaster 3850 Support Question
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Question posted by koth on April 29th, 2014
How To Disconnect Backup Battery On Liftmaster Model 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 WILL...
3850 Elite Series Manual - Page 2
... the Protector System 25
Operation
26-33
Operation safety instructions 26
Using garage door opener 26
Using the wall-mounted door control 27
Using the remote control 28
Troubleshooting 28
The remote control battery 28
EverCharge® Standby Power System (optional 29
To open the door manually 30
Care of serious injury or death if you do...
3850 Elite Series Manual - Page 3
..., cables, pulleys, brackets or their hardware, ALL of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid malfunction and damage. If balanced, it should stay in place, supported entirely by its springs.
2. To prevent possible SERIOUS INJURY or...
3850 Elite Series Manual - Page 5
... and all parts illustrated below . Carton Inventory
Your garage door opener is packaged in the foam.
Accessories will depend on the model purchased. 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...
3850 Elite Series Manual - Page 6
...threaded shaft until the spring releases and snaps the nut ring against the trolley (Figure 2).
• Place a 7/16" open end wrench on top of motor unit. Figure 1
Trolley
Nut Ring
Trolley
Nut Ring
Figure 3
BEFORE 1" (2.5 cm)
AFTER... Unit
To avoid installation difficulties, do not run the garage door opener until instructed to door opener. • Position belt over belt pulley.
3850 Elite Series Manual - Page 7
... to fingers from electrocution, disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.
7 To avoid possible SERIOUS INJURY to cables, spring assemblies and other hardware MUST be caught in SEVERE INJURY or DEATH.
3. Install garage door opener 7 feet (2.1 m) or more above floor.
7. NEVER connect garage door opener to power source until instructed...
3850 Elite Series Manual - Page 11
... top of door. To prevent damage to garage door, rest garage door opener rail on 2x4 placed on the trolley release arm to the floor, measure the distance from ceiling.
11
You will need help at this point. ENGAGED
Trolley Release Arm
RELEASED
ONE-PIECE DOOR WITHOUT TRACK
• With the door fully open and parallel to disconnect inner and...
3850 Elite Series Manual - Page 12
... hanging bracket to a support with 5/16"-18x7/8"
hex bolts, lock washers and nuts. 6. Check to structural supports before installing the opener. Remove the 2x4. FINISHED CEILING - Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the motor unit to provide rigid support. NOTE: DO NOT connect power to...
3850 Elite Series Manual - Page 13
...the same garage door opener, it can be mounted to red (Figure 2). The trolley will not return to motor unit. To prevent possible SERIOUS INJURY or DEATH from a closing garage door. HARDWARE...32 x 1" machine screws (into drywall, drill 5/32" holes and use model 378LM wireless wall control as the secondary door control.
1. NOTE: The functional temperature range of bell wire. To prevent...
3850 Elite Series Manual - Page 14
... Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is in the fully open position.
Use ONLY incandescent.
To prevent damage to the opener: • DO NOT ...lens.
• Install a 100 watt maximum light bulb in the channel. • Replace battery cover. INSTALLATION STEP 7 Install the EverCharge® Standby Power System (optional)
• Make...
3850 Elite Series Manual - Page 15
... or DEATH from electrocution or fire:
• Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.
• Garage door installation and wiring MUST be grounded.
• Reinstall the cover. Be sure the opener is clear of persons and obstructions. • NEVER use handle to pull door open door falling rapidly and/or unexpectedly. • NEVER...
3850 Elite Series Manual - Page 16
... receiving 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 wood at each other hardware) may interrupt the beam while the door is closing garage door: • Correctly connect and align the safety reversing sensor.
If installing in the path...
3850 Elite Series Manual - Page 24
... measures the amount of safety reversal system.
• NEVER use force adjustments to compensate for the force to be SERIOUSLY INJURED or KILLED by a closing garage door.
• Too much force on floor. Push the door control or programmed remote control. If the garage door opener cannot open and close (DOWN).
3.
3850 Elite Series Manual - Page 25
...) board (or a 2x4 laid flat)
ADJUSTMENT STEP 4 Test The Protector System®
• Press the remote control push button to open the door.
• Place the opener carton in the path of the door.
• Press the remote control push button to the fact that the sensor is misaligned or obstructed). The garage door opener will flash.
3850 Elite Series Manual - Page 26
... emergency release handle to disengage trolley ONLY when garage door is initially plugged in; ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED (see page 3). ALWAYS disconnect electric power to adjust the operator properly may be seen clearly, it can close the door with any remote, follow the instructions in an open .
2. If closed, it will not close from a hand...
3850 Elite Series Manual - Page 31
... 1, Program the Travel Limits. My motor unit hums briefly: • First verify that the trolley is operating off when door is open: • The garage door opener is equipped with beep, sounding every 30 seconds, indicates battery is low. • If a red LED remains on the motor unit then refer to force or travel .
5. The need...
3850 Elite Series Manual - Page 32
... in wire), replace as needed . • Disconnect wires at door control, touch wires together.
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 programmed with jumper wire.
Symptom: Door travels 2-3 inches and stops. • Reprogram...
3850 Elite Series Manual - Page 34
... 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 open and close when you wish to operate other Security✚® garage door openers.
34 LOCK
LIGHT
LOCK
LIGHT
4. The door will be programmed to use.
1. Within 30 seconds...
3850 Elite Series Manual - Page 35
... buttons for 30 seconds. If light bulbs are not installed, two clicks will no longer open the door. Press the temporary 4-digit PIN you have chosen, then press Enter.
The learn " button...the motor unit lights blink.
The opener light will glow steadily for your garage door opener. Test by pressing only the ENTER button if the one opening.
LOCK
LIGHT
To change an existing...
3850 Elite Series Manual - Page 38
... sensor modules.
485LM
395LM
Remote Light Control :
Enables homeowner to protect LiftMaster® garage door openers against damage from lightning and power surges.
38 SECURITY✚® 3-Button Mini Remote Control : With key ring and fastening strip. Enables homeowner to the garage door opener. Includes battery. ACCESSORIES
1702LM
Outside Quick Release:
Required for the largest...
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