LiftMaster J J - NEW STYLE DISCONNECT Manual - Page 10

TEST THE SYSTEM Turn on power. Test all controls and safety devices to make sure they are working properly. It will be necessary to refer back to page 6 for fine adjustment of the WARNING W limit switches. IMPORTANT NOTES: Do not leave operator power on unless all safety and entrapment protection devices have been tested and are working properly. DO NOT PLACE HANDS OR TOOLS IN OR NEAR THE OPERATOR WHEN THE POWER IS ON OR WHEN TESTING CONTROL OR SAFETY DEVICES. ALWAYS DISCONNECT POWER BEFORE SERVICING OR ADJUSTING THE OPERATOR. Be sure you have read and understand all Safety Instructions included in this manual. CAUTION Be sure the owner or person(s) responsible for operation of the door have read and understand the Safety Instructions, know how to electrically operate the door in a safe manner, and know how to use the manual disconnect operation of the door operating system. BRAKE ADJUSTMENT A solenoid brake is an optional modification. If present, the brake is adjusted at the factory and should not need additional adjustment for the the life of the friction pad. If desired, a brake can also be field installed. To order a kit for field installation on an existing operator, call the parts and service department at 1-800-528-2806. Replace friction pads when necessary. Refer to the illustration for identification of components for the solenoid type brake system. Solenoid Brake System Friction Pads Solenoid Release Lever Plate Assembly 10