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Chamberlain 3900PLD 475LM, 377LM, 480LM, 380LM, 41A5281, 41A6102, ACCESSORIES, Power Door Lock:, Remote Work Light:, Extension Brackets:, Alternate Mounting Kit:

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ACCESSORIES

41A5281	Extension Brackets:	475LM
	(Optional) For safety reversing	475LM
	(Optional) For safety reversing
	sensor installation onto the wall or
	floor.
377LM	Keyless Entry with Security✚®	:
	Enables end user to operate door	480LM
	operator from outside by entering a
	password on a specially designed
	keyboard. Also can add a temporary
	password for visitors or service
	persons. This temporary password
	can be limited to a programmable
	number of hours or entries.
380LM	Remote Work Light:	41A6102

Enables homeowner to turn on a work light from their car with their door operator remote or from anywhere in their home with an additional LiftMaster Security✚® remote.

EverCharge™ StandBy Power System:

Provides backup power to the model 3900 door operator.

Alternate Mounting Kit:

This kit allows the operator to be mounted below the torsion bar in the case where the torsion bar is not round or the normal mounting area is obstructed.

Power Door Lock:

Enables the end user to prevent the door from being manually opened once closed.

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Contents

For Light Duty Commercial Use Install On Sectional Doors With Torsion Assemblies Only Introduction2-5 Assembly Installation7-16 Adjustment17-20 Operation21-25 Planning Preparing your Door Specifications Tools needed Carton Inventory Hardware Inventory Attach the Collar to the Operator Attach Mounting Bracket to the Operator Position the Operator Attach the Emergency Release Rope and Handle Install Power Door Lock Attach the Cable Tension Monitor (Required) Install the Single Button Control Station Install the Light (Not Provided) Electrical Requirements Mount the Standby Power Unit (SPU) Install The Protector System® INSTALLING THE BRACKETS Door track installation (preferred) (Figure 1): Wall installation (Figure 2 and 3): Floor installation (Figure 4): MOUNTING AND WIRING THE SAFETY REVERSING SENSORS ALIGNING THE SAFETY REVERSING SENSORS TROUBLESHOOTING THE SAFETY REVERSING SENSORS Program the Travel Limits Set the Force Test the Safety Reversal System Test The Protector System® Test Cable Tension Monitor To Open the Door Manually Using Your Door Operator CARE OF YOUR OPERATOR MAINTENANCE SCHEDULE Once a Month Once a Year HAVING A PROBLEM? (TROUBLESHOOTING) 4.The remote control has short range: 5.The door opens and closes by itself: 6.The door doesn’t open completely: 7.The door opens but won't close: Having a Problem? (Continued) 1 FLASH 2 FLASHES FLASHES 4 FLASHES 5 FLASHES To Add or Program a Hand-heldRemote Control (Not Provided) To Erase All Codes From Motor Unit Memory *3-ButtonRemote (315 MHz) To Add, Program or Change a Keyless Entry PIN (Not Provided) Programming Remote Light (Not Provided) Installation Parts Motor Unit Assembly Parts ACCESSORIES 41A5281 Extension Brackets: 475LM 377LM