User manual CHAMBERLAIN 3850-267

[. . . ] 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!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 the opener are required to ensure safe operation. [. . . ] Push the door control or programmed remote control a third time to close the door (DOWN). The LED will stop flashing when the force has been programmed. 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. · Operate the door in the down direction. The door must reverse on striking the obstruction. ADJUST · If the door stops on the obstruction, it is not traveling far enough in the down direction. Complete Adjustment Steps 1 and 2 Programming the Limits and Forces. 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). · Any repair to or buckling of the garage floor. · Any repair to or adjustment of the opener. Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. [. . . ] 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. Look for him in the Yellow Pages, or call our Service number for a list of dealers in your area. 1-800-528-9131 LIFTMASTER FIVE YEAR LIMITED WARRANTY LIFETIME MOTOR AND BELT LIMITED WARRANTY The Chamberlain Group, Inc. [. . . ]