Chamberlain 2245, 2255, 2255-2 Attach the Rail to the Header, Bracket

INSTALLATION STEP 3

Attach the Rail to the Header

Bracket

ïPosition the opener on the garage floor below the header bracket. Use packing material as a protective base. NOTE: If the door spring is in the way you’ll need help. Have someone hold the

Header Wall		opener securely on a temporary support to allow
		opener securely on a temporary support to allow
Header Bracket		the rail to clear the spring.
Chain Pulley	ï	Position the rail bracket against the header
Bracket		bracket.
	ï	Align the bracket holes and join with a clevis pin
		as shown.
	ï	Insert a ring fastener to secure.

Rail

Ring Fastener

Header Bracket

Clevis Pin 5/16"x2-3/4"

Chain

Pulley

Bracket

Rail

Garage

Door

Temporary

Support

HARDWARE SHOWN ACTUAL SIZE

Clevis Pin
5/16"x2-3/4"	Ring Fastener

Contents

For Residential Use Only Introduction Assembly Installation Adjustment Operation Preparing your garage door Tools needed Planning Carton Inventory Attach the Rail to the Motor Unit Attach the Chain to the Sprocket and Install the Sprocket Cover Tighten the Chain Determine the Header Bracket Location Install the Header Bracket Attach the Rail to the Header Bracket Position the Opener Hang the Opener Install the Door Control Install the Light Attach the Emergency Release Rope and Handle Electrical Requirements Install The Protector System® INSTALLING THE BRACKETS Garage door track installation (preferred): Wall installation (Figure 2 & 3): Floor installation (Figure 4): MOUNTING AND WIRING THE SAFETY SENSORS ALIGNING THE SAFETY SENSORS TROUBLESHOOTING THE SAFETY SENSORS Fasten the Door Bracket ONE-PIECEDOORS Metal Doors: Connect Door Arm to Trolley ALL ONE-PIECEDOORS 1.Assemble the door arm, Figure 4: 2.Adjustment procedures, Figure 5: ïOpen door adjustment: decrease UP travel limit ïClosed door adjustment: decrease DOWN travel limit Adjust the UP and DOWN Travel Limits Adjust the Force Test the Safety Reversal System Test The Protector System® Using Your Garage Door Opener Using the Wall-Mounted Door Control To Open the Door Manually CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: THE REMOTE CONTROL BATTERY Repeat the safety reverse test (Adjustment Step 3, page 25) after any adjustment of limits or force HAVING A PROBLEM My door will not close and the light bulbs blink on my motor unit: 2.My remotes will not activate the door: My door reverses for no apparent reason: 5.My lights will not turn off when door is open: 1 FLASH 2 FLASHES 3 FLASHES 4 FLASHES 5 FLASHES To Add or Reprogram a Hand-heldRemote Control To Erase All Codes From Motor Unit Memory *3-ButtonRemotes To Add, Reprogram or Change a Keyless Entry PIN Rail Assembly Parts Installation Parts Motor Unit Assembly Parts ACCESSORIES 1702LM Outside Quick Release:995LM Remote Light Control: 1708LM 1710LM LIFTMASTER ONE-YEARLIMITED WARRANTY FOUR YEAR MOTOR LIMITED WARRANTY