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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
®
DOOR OPERATOR
Model 3900PLD
For Light Duty Commercial Use Install On
Sectional Doors With Torsion Assemblies Only
Owner’s Manual
■ Please read this manual and the enclosed safety materials carefully!
■ Fasten the manual near the door after installation.
®
■ The door WILL NOT CLOSE unless The Protector System and cable tension monitor are
connected and properly aligned.
■
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TABLE OF CONTENTS Introduction 2-5 Operation 21-25 Safety symbol review and signal word review . . . . . . . . . . 2 Operation safety instructions . . . . . . . . . . . . . . . . . . . . . . 21 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Using your door operator . . . . . . . . . . . . . . . . . . . . . . . . . 21 Preparing your door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Care of your operator . . . . . . . . . . . . . . . .
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Planning � The torsion bar must extend at least 1" to 5" Survey your area to see if any of the conditions below apply to your installation. Additional materials may be (2.5 cm to 12 cm) past the bearing plate. required. You may find it helpful to refer back to this page � An electric outlet is required within 6' (1.8 m) of the as you proceed with the installation of your operator. installation area. If outlet does not exist, contact a qualified electrician. Depending on your requirements,
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1 Preparing your Door Before you begin: To prevent possible SERIOUS INJURY or DEATH: � Disable locks. • ALWAYS call a trained door systems technician if door � Remove any ropes connected to door. binds, sticks or is out of balance. An unbalanced door may � Complete the following test to make sure your door is not reverse when required. balanced and is not sticking or binding: • NEVER try to loosen, move or adjust door, door springs, 1. Lift the door about halfway as shown. Release
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Carton Inventory Note that accessories will depend on the model Your door operator is packaged in one carton which purchased. If anything is missing, carefully check the contains the motor unit and the parts illustrated below. packing material. Single Button Control Station 2-Conductor Bell Wire Safety Sensor Bracket (2) White & White/Red Collar with Screws Mounting Bracket Operator ® The Protector System (2) Safety Reversing Sensors Safety Labels (1 Sending Eye and 1 Receiving Eye) and with
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ASSEMBLY STEP 1 Attach the Collar to the Operator To prevent possible SERIOUS INJURY or DEATH, the collar To avoid installation difficulties, do not run the door MUST be properly tightened. The door may not reverse operator until instructed to do so. correctly or limits may be lost due to collar slip. � Loosen the collar screws. � Attach collar to either the left or the right side of the operator. Ensure that the collar is seated all the way on motor shaft until stop is reached (Figure 1).
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WARNING WARNING INSTALLATION IMPORTANT INSTALLATION INSTRUCTIONS WARNING WARNING To reduce the risk of SEVERE INJURY or DEATH: 1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND 7. NEVER wear watches, rings or loose clothing while installing INSTRUCTIONS. or servicing operator. They could be caught in door or operator mechanisms. 2. Install door operator ONLY on properly balanced and lubricated door. An improperly balanced door may not 8. Install wall-mounted door control: reverse whe
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DRILL 5/16" DRILL 3/4" DRILL 5/16" TOP TOP DRILL 5/16" DRILL 3/4" DRILL 5/16" NOTICE INSTALLATION STEP 2 Attach the Emergency Release Rope To prevent possible SERIOUS INJURY or DEATH from a falling and Handle door: � Thread one end of the rope through the hole in the top • If possible, use emergency release handle to disengage door of the red handle so “NOTICE” reads right side up as ONLY when door is CLOSED. Weak or broken springs or shown. Secure with an overhand knot at least 1" unba
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INSTALLATION STEP 4 Figure 1 Attach the Cable Tension Monitor Operator (Required) Torsion Bar This operator comes standard with the cable tension monitor. It is supplied as a device to monitor the Drum cables for ANY slack that may occur and will reverse the door when excessive slack is detected, eliminating Cable service calls. The cable tension monitor MUST be connected and 2"-6" (5 cm- properly installed before the door operator will move Cable 15 cm) Tension in the down direction. M
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INSTALLATION STEP 5 Install the Single Button To prevent possible SERIOUS INJURY or DEATH from Control Station electrocution: • Be sure power is not connected BEFORE installing door control. • Connect ONLY to 24 VOLT low voltage wires. To prevent possible SERIOUS INJURY or DEATH from a closing door: • Install door control within sight of door, out of reach of children at a minimum height of 5 feet (1.5 m) and away from ALL moving parts of door. • NEVER permit children to operate or pla
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WARNING WARNING IMPORTANT SAFETY INSTRUCTIONS WARNING WARNING To reduce the risk of SEVERE INJURY or DEATH: 1. This portable luminaire has a polarized plug (one blade is 5. NEVER use with an extension cord unless plug can be fully wider than the other) as a feature to reduce the risk of inserted. electric shock. 6. Do not alter the plug. 2. This plug will fit in a polarized outlet ONLY one way. 7. Light is intended for ceiling mount and indoor applications 3. If the plug does not fi
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PERMANENT WIRING CONNECTION Flexible conduit PERMANENT WIRING CONNECTION INSTALLATION STEP 7 Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from To avoid installation difficulties, do not run the electrocution or fire: operator at this time. • Be sure power is not connected to the operator, and To reduce the risk of electric shock, your operator has a disconnect power to circuit BEFORE removing cover to establish permanent wiring connection. grounding type plug with a t
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INSTALLATION STEP 8 Mount the Standby Power Unit (SPU) (Not Provided) 475LM Standby Power System If the optional 475LM Standby Power Unit is part of this installation it should be installed at this time. � The SPU can be mounted to either the ceiling or a wall within 3' (.9 m) of the motor unit. � Position the SPU as desired to a structural support (ceiling joist or wall stud). � Attach the SPU to the support using the mounting holes on either side of the SPU. � Secure the SPU using th
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INSTALLATION STEP 7 ® Install The Protector System Be sure power is not connected to the door operator BEFORE installing the safety reversing sensor. The safety reversing sensor must be connected and To prevent SERIOUS INJURY or DEATH from a closing door: aligned correctly before the door operator will move in the down direction. This is a required safety device • Correctly connect and align the safety reversing sensor. This and cannot be disabled. required safety device MUST NOT be disabl
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INSTALLING THE BRACKETS DOOR TRACK MOUNT (RIGHT SIDE) Figure 1 Be sure power to the operator is disconnected. Install and align the brackets so the safety reversing sensors will Door face each other across the door, with the beam no higher Track than 6" (15 cm) above the floor. They may be installed in one of three ways, as follows. Lip Indicator Door track installation (preferred) (Figure 1): Light � Slip the curved arms over the rounded edge of each door track, with the curved arms faci
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MOUNTING AND WIRING THE SAFETY REVERSING Figure 5 Wing Nut SENSORS 1/4"-20 � Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor. Use wing nuts to fasten safety reversing sensors to brackets, with lenses pointing toward each Carriage Bolt other across the door. Be sure the lens is not obstructed 1/4"-20x1/2" by a bracket extension (Figure 5). Lens � Finger tighten the wing nuts. � Run the wires from both safety reversing sensors to the TROUBLESHOOTING THE SAFETY REVER
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ADJUSTMENT STEP 1 Program the Travel Limits Without a properly installed safety reversal system, persons Travel limits regulate the points at which the door will (particularly small children) could be SERIOUSLY INJURED or stop when moving up or down. Follow the steps below KILLED by a closing door. to set the limits. • NEVER learn forces or limits when door is binding or sticking. Repair door first. Figure 1 Indicator • Incorrect adjustment of door travel limits will interfere with Light
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ADJUSTMENT STEP 2 Setting the Force Without a properly installed safety reversal system, persons The force setting button is located on the front panel. (particularly small children) could be SERIOUSLY INJURED or The force setting measures the amount of force KILLED by a closing door. required to open and close the door. • NEVER learn forces or limits when door is binding or 1. Locate the purple button on the unit (Figure 1). sticking. Repair door first • Too much force on door will interf
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ADJUSTMENT STEP 3 Test the Safety Reversal System Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or TEST KILLED by a closing door. � With the door fully open, place a 1-1/2" (3.8 cm) board • Safety reversal system MUST be tested every month. (or a 2x4 laid flat) on the floor, centered under the door. • If one control (force or travel limits) is adjusted, the other � Operate the door in the down direction. The door m
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NOTICE ADJUSTMENT STEP 5 Test Cable Tension Monitor To prevent possible SERIOUS INJURY or DEATH from a falling door: If your cable tension monitor has been activated the Indicator Light will blink 9 times. See (Figure 1) page 16. • If possible, use emergency release handle to disengage door ONLY when door is CLOSED. Weak or broken springs or unbalanced door could result in an open door falling rapidly and/or unexpectedly. ADJUSTMENT STEP 6 • NEVER use emergency release handle unless doorw
