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Chamberlain 3900PLD Having a Problem? (Continued), 13.Door loses limits, 12.The operator won't operate due to power failure:, 14.The operator moves when the door is in operation:

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Having a Problem? (Continued)

12.The operator won't operate due to power failure:

•Use the emergency release handle to disconnect the door. The door can be opened and closed manually. When power is restored, pull manual release a second time.

•If a Standby Power Unit is connected, the operator should be able to operate up to 20 times without power.

13.Door loses limits.

•Collar not tightened securely. Tighten collar

(see Assembly Steps 1 and 2) and reprogram limits (see Adjustment Step 1).

14.The operator moves when the door is in operation:

•Some minor movement is normal for this product. If it is excessive the collar will wear prematurely.

•Check to make sure the torsion bar is not moving left/right excessively.

•Check to make sure the torsion bar is not visibly moving up and down as it rotates.

•Check that the operator is mounted at a right angle to the jackshaft. If not, move the position of the mounting bracket.

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