8557 Manual
Page 1
...liftmaster.com for future reference: Serial Number: . DC Belt Drive with Battery Backup • 8557 - 3/4 hp Belt Drive FOR RESIDENTIAL USE ONLY ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation...installing the garage door opener on the left side panel of Purchase: CONTENTS Preparation 2-3 Assembly 4-5 Installation 6-13 Install the Door Control 14-16 Install...39-41 * If applicable www.liftmaster.com The Chamberlain Group, Inc...the following information for installation instructions. The Timer-...
...liftmaster.com for future reference: Serial Number: . DC Belt Drive with Battery Backup • 8557 - 3/4 hp Belt Drive FOR RESIDENTIAL USE ONLY ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation...installing the garage door opener on the left side panel of Purchase: CONTENTS Preparation 2-3 Assembly 4-5 Installation 6-13 Install the Door Control 14-16 Install...39-41 * If applicable www.liftmaster.com The Chamberlain Group, Inc...the following information for installation instructions. The Timer-...
8557 Manual
Page 21
...the plug doesn't fit into a grounding type outlet. OPTION B PERMANENT WIRING If permanent wiring is required by your outlet, contact a qualified electrician to install the proper outlet. To make it fit outlet. The opener must be grounded. 1.4B Reinstall the cover. the white (neutral) wire to the ...7/8 inch hole. 1.7B Run wires through a terminal block (8550 models manufactured after April 12, 2013 and all 8557 models): 1.1B Remove the motor unit cover screws and set aside. 1.3B Remove the attached green ground terminal. 1.4B Cut...
...the plug doesn't fit into a grounding type outlet. OPTION B PERMANENT WIRING If permanent wiring is required by your outlet, contact a qualified electrician to install the proper outlet. To make it fit outlet. The opener must be grounded. 1.4B Reinstall the cover. the white (neutral) wire to the ...7/8 inch hole. 1.7B Run wires through a terminal block (8550 models manufactured after April 12, 2013 and all 8557 models): 1.1B Remove the motor unit cover screws and set aside. 1.3B Remove the attached green ground terminal. 1.4B Cut...