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26

Using Your Garage Door Opener

Your Security

®

opener and hand-held remote control

have been factory-set to a matching code which changes
with each use, randomly accessing over 100 billion new
codes. Your opener will operate with up to eight
Security

®

remote controls and one Security

®

Keyless

Entry System. If you purchase a new remote, or if you
wish to deactivate any remote, follow the instructions in
the 

Programming

section. 

Activate your opener with any of the following:

The hand-held Remote Control:

Hold the large push

button down until the door starts to move.

The wall-mounted control console:

Hold the push

button or bar down until the door starts to move.

The Keyless Entry (See Accessories):

If provided with

your garage door opener, it must be programmed
before use. See 

Programming.

When the opener is activated (with the safety
reversing sensor correctly installed and aligned)

1. If open, the door will close. If closed, it will open.
2. If closing, the door will reverse.
3. If opening, the door will stop.

4. If the door has been stopped in a partially open

position, it will close.

5. If obstructed while closing, the door will reverse. If the

obstruction interrupts the sensor beam, the opener
lights will blink for five seconds.

6. If obstructed while opening, the door will stop.

7. If fully open, the door will not close when the beam is

broken. The sensor has no effect in the opening cycle.

If the sensor is not installed, or is misaligned, the door
won’t close from a hand-held remote. However, you can
close the door with the Control Console, the Outside
Keylock, or Keyless Entry, 

if you activate them until down

travel is complete. 

If you release them too soon, the door

will reverse. 

The opener lights

will turn on under the following

conditions: when the opener is initially plugged in; when
power is restored after interruption; when the opener is
activated. 

They will turn off automatically after 4-1/2 minutes or
provide constant light when the Light feature on the Door
Control is activated. Bulb size is 100 watts maximum.

Security

®

light feature: 

Lights will also turn on when

someone walks through the open garage door. With a
Motion Detecting Door Control Console, this feature may
be turned off as follows: With the opener lights off, press
and hold the light button for 10 seconds, until the light
goes on, then off again. To restore this feature, start with
the opener lights on, then press and hold the light button
for 10 seconds until the light goes off, then on again.

OPERATION

IMPORTANT SAFETY INSTRUCTIONS

To reduce the risk of SEVERE INJURY or DEATH:

WARNING

WARNING

WARNING

1. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS.
2. ALWAYS keep remote controls out of reach of children.

NEVER permit children to operate or play with garage control
console push buttons or remote controls. 

3. ONLY activate garage door when it can be seen clearly, it is

properly adjusted, and there are no obstructions to door
travel.

4. ALWAYS keep garage door in sight until completely closed.

NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.

5. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPEN

DOOR.

6. If possible, use emergency release handle to disengage

trolley ONLY when garage door is CLOSED. Weak or broken
springs or unbalanced door could result in an open door
falling rapidly and/or unexpectedly.

7. NEVER use emergency release handle unless garage

doorway is clear of persons and obstructions.

8. NEVER use handle to pull garage door open or closed. If

rope knot becomes untied, you could fall.

9. If one control (force or travel limits) is adjusted, the other

control may also need adjustment.

10. After ANY adjustments are made, the safety reversal

system MUST be tested.

11. Safety reversal system MUST be tested every month.

Garage door MUST reverse on contact with 1-1/2" high
(3.8 cm) high object (or a 2x4 laid flat) on the floor.

12. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED

(see page 3). An improperly balanced door may not
reverse when required and could result in SEVERE INJURY
or DEATH.

13. ALL repairs to cables, spring assemblies and other

hardware, all of which are under EXTREME tension, MUST
be made by a trained door systems technician.

14. To avoid SERIOUS PERSONAL INJURY or DEATH from

electrocution, disconnect ALL electric and battery power
BEFORE performing ANY service or maintenance.

15.

SAVE THESE INSTRUCTIONS.

Summary of Contents for LiftMaster Professional Security+ 3850

Page 1: ...e enclosed safety materials carefully Fasten the manual near the garage door after installation The door WILL NOT CLOSE unless the Protector System is connected and properly aligned Periodic checks of...

Page 2: ...a problem Troubleshooting 30 Diagnostic chart 31 Programming 32 33 To add or reprogram a hand held remote control 32 To erase all codes from motor unit memory 32 3 Button remotes 32 To add reprogram o...

Page 3: ...arage door Before you begin Disable locks Remove any ropes connected to garage door Complete the following test to make sure your garage door is balanced and is not sticking or binding 1 Lift the door...

Page 4: ...and height of your garage door Survey your garage area to see if any of the conditions below apply to your installation Additional materials may be required You may find it helpful to refer back to t...

Page 5: ...l Your garage door opener is packaged in two cartons which contain the motor unit and all parts illustrated below Accessories will depend on the model purchased If anything is missing carefully check...

Page 6: ...t WARNING CAUTION ASSEMBLY STEP 2 Set the Belt Tension By hand thread the spring trolley nut on the threaded shaft until it is finger tight against the trolley Figure 1 Do not use any tools Insert a s...

Page 7: ...ATH 3 ALL repairs to cables spring assemblies and other hardware MUST be made by a trained door systems technician BEFORE installing opener 4 Disable ALL locks and remove ALL ropes connected to garage...

Page 8: ...the door NOTE If the total number of inches exceeds the height available in your garage use the maximum height possible or refer to page 9 for ceiling installation To prevent possible SERIOUS INJURY...

Page 9: ...age Door Header Wall Garage Door UP CEILING MOUNT ONLY Wall Mounting Holes Optional Wall Mounting Holes The nail hole is for positioning only You must use lag screws to mount the header bracket UP CEI...

Page 10: ...tach the Rail to the Header Bracket Position the opener on the garage floor below the header bracket Use packing material as a protective base NOTE If the door spring is in the way you ll need help Ha...

Page 11: ...ner onto a stepladder You will need help at this point if the ladder is not tall enough Open the door all the way and place a 2x4 laid flat on the top section beneath the rail If the top section or pa...

Page 12: ...t is not centered above the door 7 Remove the 2x4 Operate the door manually If the door hits the rail raise the header bracket 8 Grease the top and underside of the rail surface where the trolley slid...

Page 13: ...wire with a staple creating a short or open circuit 4 Strip 7 16 11 mm of insulation from end of bell wire Connect bell wire to the quick connect terminals as follows white to white and white red to r...

Page 14: ...dard light bulbs The use of short neck or speciality light bulbs may overheat the endpanel or light socket Lens Hinge 100 Watt Max Standard Light Bulb Release Tab 100 Watt Max Standard Light Bulb INST...

Page 15: ...n cord 2 wire adapter or change plug in ANY way to make it fit outlet Be sure the opener is grounded Ground Tab Green Ground Screw Ground Wire Black Wire PERMANENT WIRING CONNECTION White Wire Black W...

Page 16: ...e lens The mounting brackets are designed to clip onto the track of sectional garage doors without additional hardware If it is necessary to mount the units on the wall the brackets must be securely f...

Page 17: ...the lip hugging the back edge of the track Figure 1 If your door track will not support the bracket securely wall installation is recommended Wall installation Figure 2 3 Place the bracket against the...

Page 18: ...ed alignment is required Loosen the sending eye wing nut and readjust aiming directly at the receiving eye Lock in place Loosen the receiving eye wing nut and adjust sensor until it receives the sende...

Page 19: ...ollows depending on your door s construction Metal or light weight doors using a vertical angle iron brace between the door panel support and the door bracket Drill 3 16 fastening holes Secure the doo...

Page 20: ...INUM STEEL DOORS WITH GLASS PANEL ETC NOT PROVIDED ONE PIECE DOORS Please read and comply with the warnings and reinforcement instructions on the previous page They apply to one piece doors also Cente...

Page 21: ...ole alignment alternative If holes in curved arm are above holes in straight arm disconnect straight arm Cut about 6 15 cm from the solid end Reconnect to trolley with cut end down as shown Bring arm...

Page 22: ...olley from the inner trolley by pulling straight down on the emergency release handle and sliding the outer trolley back toward the motor unit Connect the curved door arm section to the trolley using...

Page 23: ...ack and purple buttons to reach the desired closed position 7 Push the remote control or the door control Figure 3 This sets the DOWN close limit and should bring the door to the open position If the...

Page 24: ...e LED Indicator Light will stop flashing when the force has been learned The opener has learned the forces required to open and close your door The door must travel through a complete cycle UP and DOW...

Page 25: ...ustment If the unit continues to fail the Safety Reverse Test call for a trained door systems technician IMPORTANT SAFETY CHECK Test the Safety Reverse System after Each adjustment of door arm length...

Page 26: ...Lights will also turn on when someone walks through the open garage door With a Motion Detecting Door Control Console this feature may be turned off as follows With the opener lights off press and ho...

Page 27: ...n or heat differential is calculated To disable this feature slide the Detector Switch on the right side of the door control down off We recommend that you disable the motion sensor when using the ope...

Page 28: ...or disposal instructions WARNING CAUTION WARNING WARNING Battery Status LED Battery Backup Optional OPERATING INSTRUCTIONS 1 Test the installed battery with the motor unit To test the battery disconne...

Page 29: ...or screwdriver blade to pry open the case as shown Insert battery positive side up Dispose of old battery properly NOTICE To comply with FCC and or Industry Canada IC rules adjustment or modification...

Page 30: ...or Repeat safety reverse test after adjustments to force or travel limits The need for occasional adjustment for the force and limit settings is normal Weather conditions in particular can affect door...

Page 31: ...do not light replace the safety reversing sensors Symptom LED is not lit on control console Inspect control console wires for a short staple in wire replace as needed Disconnect wires at control cons...

Page 32: ...heard 1 Press and release the learn button on the motor unit The learn indicator light will glow steadily for 30 seconds 2 Within 30 seconds press and hold the button on the hand held remote that you...

Page 33: ...using a ladder 1 Press the four buttons for the present PIN then press and hold the button The opener light will blink twice Release the button 2 Press the new 4 digit PIN you have chosen then press E...

Page 34: ...onsole 2 373LM 3 Button remote control 3 10A20 3V2032 Lithium battery 4 29B137 Remote control visor clip 5 41A2828 Emergency release rope and handle assembly 6 41B4494 1 2 Conductor bell wire white wh...

Page 35: ...6282 Battery wires and plug 41A6327 Light socket wires and plug 41A6328 RPM passpoint wires with plug 5 41D794 Motor with positioning sensor 6 41DB002 2 Receiver logic assembly KEY PART NO NO DESCRIPT...

Page 36: ...outside by entering a password on a specially designed keyboard Also can add a temporary password for visitors or service persons This temporary password can be limited to a programmable number of ho...

Page 37: ...37 NOTES...

Page 38: ...38...

Page 39: ...39...

Page 40: ...ULAR PURPOSE ARE LIMITED IN DURATION TO THE FIVE YEAR LIMITED WARRANTY PERIOD SET FORTH ABOVE EXCEPT THE IMPLIED WARRANTIES WITH RESPECT TO THE MOTOR AND BELT WHICH ARE LIMITED IN DURATION TO THE LIFE...

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