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Manual LiftMaster 8550 Garage Door Opener

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Manual

Installation

IMPORTANT INSTALLATION INSTRUCTIONS

WARNING

To reduce the risk of SEVERE INJURY or DEATH:

1. READAND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS.

2. Install garage door opener ONLY on properly balanced and lubricated garage door. An

improperly balanced door may NOT reverse when required and could resultin SEVERE

INJURY or DEATH.

3. ALL repairs to cables,spring assemblies and other hardware MUSTbe made bya trained

door systems technician BEFORE installing opener.

4. Disable ALL locksand remove ALL ropes connected to garage door BEFORE installing

opener to avoid entanglement.

5. Install garage door opener 7 feet (2.13 m) or more above floor.

6. Mountthe emergency release within reach, but atleast6 feet(1.83 m) above the floor and

avoiding contact with vehicles to avoid accidental release.

7. NEVER connect garage door opener to power source until instructed to do so.

8. NEVERwear watches, rings or loose clothing while installing or servicing opener.They could

be caughtin garage door or opener mechanisms.

9. Install wall-mounted garage door control:

l within sight of the garage door.

l out of reach of children at minimum heightof 5 feet (1.5 m).

l away from ALL moving parts ofthe door.

10. Place entrapment warning label on wall nextto garage door control.

11. Place manual release/safetyreverse test label in plain view on inside ofgarage door.

12. Upon completion of installation, test safety reversal system. Door MUST reverse on contact

with a 1-1/2" (3.8 cm) high object(or a 2x4 laid flat) on the floor.

13. To avoid SERIOUS PERSONAL INJURY or DEATH from electrocution,disconnectALL

electricand battery power BEFORE performing ANY service or maintenance.

14. DO NOT enable the Timer-to-Close functionality ifoperating either one-piece or swinging

garage doors.To be enabled ONLY when operating a sectional door.

NOTE: If you are installing the garage door opener on a one-piece door, visit www.LiftMaster.com for installation instructions.

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