LiftMaster 3255 3255 Manual - Page 2

TABLE OF CONTENTS Introduction 2-5 Safety symbol and signal word review 2 Preparing your garage door 3 Tools needed 3 Planning 4 Carton inventory 5 Hardware inventory 5 Assembly 6-7 Attach the rail to the motor unit 6 Attach the chain to the sprocket 6 Tighten the chain 7 Installation 7-22 Installation safety instructions 7 Determine the header bracket location 8 Install the header bracket 9 Attach the rail to the header bracket 10 Position the opener 11 Hang the opener 12 Install the door control 13 Install the light 14 Attach the emergency release rope and handle 14 Electrical requirements 15 Install the Protector System 16-18 Fasten the door bracket 19-20 Connect the door arm to the trolley 21-22 Adjustment 23-25 Adjust the travel limits 23 Adjust the force 24 Test the safety reversal system 25 Test the Protector System 25 Operation 26-30 Operation safety instructions 26 Using your garage door opener 26 Using the wall-mounted door control 27 To open the door manually 27 Care of your garage door opener 28 Having a problem 29 Diagnostic chart 30 Programming 31-32 To add or reprogram a hand-held remote control 31 To erase all codes 31 3-Button remotes 31 To add, reprogram or change a Keyless Entry PIN 32 Repair Parts 33-34 Rail assembly parts 33 Installation parts 33 Motor unit assembly parts 34 Accessories 35 Repair Parts and Service 36 Warranty 36 INTRODUCTION Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the instructions and warnings contained in this manual. Mechanical Electrical When you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibility of serious injury or death if you do not comply with the warnings that accompany them. The hazard may come from something mechanical or from electric shock. Read the warnings carefully. When you see this Signal Word on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you do not comply with the cautionary statements that accompany it. Read them carefully. 2