User manual CHAMBERLAIN 3850

[. . . ] 845 Larch Avenue Elmhurst, Illinois 60126-1196 www. liftmaster. com ® GARAGE DOOR OPENER Models 3850 3850-267 For Residential Use Only Se Co m t pa ible with r eP fo age 29 Owner's Manual Please read this manual and the enclosed safety materials carefully!The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned. The model number label is located under the light lens on the left side panel of your opener. De tails TABLE OF CONTENTS Introduction 2-5 Operation 26-33 Safety symbol and signal word review. 21-22 Programming 34-35 To add or reprogram a hand-held remote control . [. . . ] Immediately when the door begins to close, press and release either the black or purple button. Push and hold the purple button until the door reaches the desired DOWN (closed) position. Once the door is closed, if there appears to be too much pressure on the door, you may toggle the door back and forth using the black and purple buttons to reach the desired closed position. Proceed to Set the Force. Figure 2 Indicator Light BLACK Push and hold until the door is at desired UP position PURPLE Figure 3 or LIGH LOC K T Figure 4 Indicator Light BLACK Push either button to stop door at desired DOWN position PURPLE 23 ADJUSTMENT STEP 2 Set the Force The force setting measures the amount of force required to open and close the door. Push the door control or programmed remote control a third time to close the door (DOWN). The door must travel through a complete cycle, up and down, in order for the force to be set properly. If the garage door opener cannot open and close the door fully, inspect the door to ensure that it is balanced properly and is not sticking or binding. If the door is not stopping exactly where you would like it, repeat Program the Travel Limits. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. · Too much force on garage door will interfere with proper operation of safety reversal system. · NEVER use force adjustments to compensate for a binding or sticking garage door. · After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2" (3. 8 cm) high object (or 2x4 laid flat) on floor. Figure 1 Indicator Light Black Button Purple Button Figure 2 Figure 3 Indicator Light Push Purple button twice to enter unit into Force Adjustment Mode Black Button Purple Button LOC K or LIGH T 24 ADJUSTMENT STEP 3 Test the Safety Reversal System TEST · With the door fully open, place a 1-1/2" (3. 8 cm) board (or a 2x4 laid flat) on the floor, centered under the garage door. ADJUST · If the door stops on the obstruction, it is not traveling far enough in the down direction. NOTE: On a sectional door, make sure limit adjustments do not force the door arm beyond a straight up and down position. · When the door reverses on the 1-1/2" (3. 8 cm) board (or 2x4 laid flat), remove the obstruction and run the opener through 3 or 4 complete travel cycles to test adjustment. · 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, limits, or force controls. · Any repair to or adjustment of the garage door (including springs and hardware). Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. · After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2" high (3. 8 cm) object (or 2x4 laid flat) on the floor. 1-1/2" (3. 8 cm) board (or a 2x4 laid flat) ADJUSTMENT STEP 4 Test The Protector System® (Safety Sensors) · Press the remote control push button to open the door. [. . . ] For use with model 3850 only. 395LM Remote Light Control : Enables homeowner to turn on a lamp, television or other appliance from car, bedside, or anywhere in the home with a remote. 975LM Laser Park Assist: Laser enables homeowners to precisely park vehicles in the garage. 373W Designer Burled Walnut 3-Button Remote Control with Security® : Includes visor clip. 990LM Surge Protector: The Garage Door Opener Surge Protector is designed to protect LiftMaster® garage door openers against damage from lightning and power surges. 38 NOTES 39 LIFTMASTER® SERVICE IS ON CALL OUR LARGE SERVICE ORGANIZATION SPANS AMERICA INSTALLATION AND SERVICE INFORMATION IS AS NEAR AS YOUR TELEPHONE. SIMPLY DIAL OUR TOLL FREE NUMBER: HOW TO ORDER REPAIR PARTS Selling prices will be furnished on request or parts will be shipped at prevailing prices and you will be billed accordingly. WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: · PART NUMBER · PART NAME · MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. Country Club Road Tucson, Arizona 85706 SERVICE INFORMATION TOLL FREE NUMBER: 1-800-528-9131 www. liftmaster. com For professional installation, parts and service, contact your local LIFTMASTER/CHAMBERLAIN dealer. [. . . ]