LiftMaster 3850 3850 Elite Series Manual - Page 26

WARNING OPERATION IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of SEVERE INJURY or DEATH: 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 door control 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, causing SEVERE INJURY or DEATH. 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" (3.8 cm) high object (or a 2x4 laid flat) on the floor. Failure to adjust the operator properly may cause SEVERE INJURY or DEATH. 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. ALWAYS disconnect electric power to garage door opener BEFORE making ANY repairs or removing covers. 15. SAVE THESE INSTRUCTIONS. 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 Door Control: 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 door control, 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 Smart Control Panel® is activated. Bulb size is A19. Bulb power is 100 watts maximum. Security✚® light feature: Lights will also turn on when someone walks through the open garage door. With an Smart Control Panel®, 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. 26