Chamberlain POWER DRIVE PD420 Owner's Manual

1/2hp garage door opener for residential use only
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GARAGE DOOR OPENER
Models PD420 • PD420-2 • PD460-2 • PD460-2K
1/2 HP
For Residential Use Only
Owner's Manual
Please read this manual and the enclosed safety materials carefully!
Fasten the manual near the garage door after installation.
The door WILL NOT CLOSE unless the Protector System
properly aligned.
Periodic checks of the opener are required to ensure safe operation.
The model number label is located on the front panel of your opener.
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.chamberlain.com
®
is connected and
®

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Summary of Contents for Chamberlain POWER DRIVE PD420

  • Page 1 GARAGE DOOR OPENER Models PD420 • PD420-2 • PD460-2 • PD460-2K 1/2 HP For Residential Use Only Owner’s Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation.
  • Page 2: Table Of Contents

    Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the instructions and warnings contained in this manual. WARNING...
  • Page 3: Preparing Your Garage Door

    To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120V, 60 Hz to avoid malfunction and damage. Tools needed During assembly, installation and adjustment of the opener, instructions will call for hand tools as illustrated below.
  • Page 4: Planning

    Planning Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page and the accompanying illustrations as you proceed with the installation of your opener.
  • Page 5 Planning (Continued) ONE-PIECE DOOR INSTALLATIONS • Generally, a one-piece door does not require reinforcement. If your door is lightweight, refer to the information relating to sectional doors in Installation Step 12. • Depending on your door’s construction, you may need additional mounting hardware for the door bracket (Step 12).
  • Page 6: Carton Inventory

    Carton Inventory Your garage door opener is packaged in one carton which contains the motor unit and all parts illustrated below. Accessories will depend on the model purchased. If anything is missing, carefully check the Model 420 (1), Model 420-2 (2) SECURITY✚...
  • Page 7: Hardware Inventory

    Hardware Inventory Separate all hardware and group as shown below for the assembly and installation procedures. Bolt 1/4-20x1-3/4" (8) Carriage Bolt Wing Nut 1/4"-20x1/2" (2) 1/4"-20 (2) Lag Screw 5/16"-9x1-5/8" (2) Lag Screw 5/16"-18x1-7/8" (2) Carriage Bolt 5/16"-18x2-1/2" (2) Clevis Pin 5/16"x2-3/4"...
  • Page 8: Assembly

    ASSEMBLY STEP 1 Assemble the Rail To avoid installation difficulties, do not run the garage door opener until instructed to do so. 1. Turn the opened rail carton upside down and empty its contents onto a level work surface. 2. Unfold the rails, taking care to avoid kinking the screw rod joint.
  • Page 9 Assemble the Rail (Continued) 4. Beginning with the sprocket end, straighten the two rail sections so that the screw rod is in a straight line at the joint. (Avoid handling the joint, which may have sharp edges.) 5. Carefully slide the pins at the top edge of the rail into the openings on the adjacent rail.
  • Page 10: Fasten The Rail To The Motor Unit And Install The Trolley

    ASSEMBLY STEP 2 Fasten the Rail to the Motor Unit and Install the Trolley NOTE: To aid in assembly and installation, replace the foam packing around the motor unit. Remove it after Installation Step 4. • Working on a level surface, align the rail assembly with the motor unit, as shown.
  • Page 11: Attach The Rail Brackets

    4. Disable all locks and 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. Mount emergency release handle 6 feet (1.83 m) above floor.
  • Page 12: Determine The Header Bracket Location

    INSTALLATION STEP 1 Determine the Header Bracket Location WARNING To prevent possible SERIOUS INJURY or DEATH: • Header bracket MUST be RIGIDLY fastened to CAUTION structural support on header wall or ceiling, otherwise garage door might not reverse when required. DO NOT install header bracket over drywall.
  • Page 13: Install The Header Bracket

    INSTALLATION STEP 2 Install the Header Bracket You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the instructions which will work best for your particular requirements. Do not install the header bracket over drywall.
  • Page 14: Attach The Rail To The Header Bracket

    Header Wall Header Bracket Rail Bracket Rail Garage Door HARDWARE SHOWN ACTUAL SIZE Clevis Pin 5/16"x2-3/4" INSTALLATION STEP 3 Attach the Rail to the Header Bracket • Position the opener on the garage floor below the header bracket. Use packing material as a protective base.
  • Page 15: Install The Protector System

    INSTALLATION STEP 4 Install The Protector System The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR When properly connected and aligned, the sensor will detect an obstacle in the path of its electronic beam.
  • Page 16 INSTALLING THE BRACKETS Be sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other across the garage door, with the beam no higher than 6" (15 cm) above the floor. They may be installed in one of three ways, as follows.
  • Page 17 MOUNTING AND WIRING THE SAFETY SENSORS • Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor. Use wing nuts to fasten sensors to brackets, with lenses pointing toward each other across the door. Be sure the lens is not obstructed by a bracket extension.
  • Page 18: Position The Opener

    INSTALLATION STEP 5 Position the Opener Follow instructions which apply to your door type as illustrated. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid flat is convenient for setting an ideal door-to-rail distance. • Remove foam packaging. • Raise the opener onto a stepladder. You will need help at this point if the ladder is not tall enough.
  • Page 19: Hang The Opener

    Lag Screw 5/16"-18x1-7/8" Hex Bolt 5/16"-18x7/8" Nut 5/16"-18 To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to structural supports of the garage. Concrete anchors MUST be used if installing any brackets into masonry. Figure 1 Measure...
  • Page 20: Install The Door Control

    CAUTION INSTALLATION STEP 7 Install the Door Control Locate door control within sight of door at a minimum height of 5 feet (1.5 m) where small children cannot reach, and away from moving parts of door and door hardware. The installation surface must be smooth and flat.
  • Page 21: Install The Lights

    INSTALLATION STEP 8 Install the Lights and Lens • Install a 100 watt maximum light bulb in each socket. The lights will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the lights will turn OFF. •...
  • Page 22: Electrical Requirements

    WARNING INSTALLATION STEP 10 Electrical Requirements CAUTION To avoid installation difficulties, do not run the opener until Step 9 below. To reduce the risk of electric shock, your garage door opener has a grounding type plug with a third grounding pin. This plug will only fit into a grounding type outlet.
  • Page 23: Fasten The Door Bracket

    INSTALLATION STEP 12 Fasten the Door Bracket Follow instructions which apply to your door type as illustrated below or on the following page. A horizontal reinforcement brace should be long enough to be secured to two or three vertical supports. A vertical reinforcement brace should cover the height of the top panel.
  • Page 24 ONE-PIECE DOORS Please read and comply with the warnings and reinforcement instructions on the previous page. They apply to one-piece doors also. • Center the door bracket on the top of the door, in line with the header bracket as shown. Mark either the left and right, or the top and bottom holes.
  • Page 25: Connect Door Arm To Trolley

    INSTALLATION STEP 13 Connect Door Arm to Trolley Follow instructions which apply to your door type as illustrated below and on the following page. SECTIONAL DOORS ONLY • Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley from the inner trolley.
  • Page 26: Connect The Door Arm To The Trolley

    ALL ONE-PIECE DOORS 1. Assemble the door arm, Figure 4: • Fasten the straight and curved door arm sections together to the longest possible length (with a 2 or 3 hole overlap). • With the door closed, connect the straight door arm section to the door bracket with the 5/16"x1-1/4"...
  • Page 27: Adjustment

    ADJUSTMENT STEP 1 Adjust the UP and DOWN Travel Limits Limit adjustment settings regulate the points at which the door will stop when moving up or down. To operate the opener, press the Door Control push bar. Run the opener through a complete travel cycle. •...
  • Page 28: Adjust The Force

    ADJUSTMENT STEP 2 Adjust the Force Force adjustment controls are located on the back panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door. If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction.
  • Page 29: Test The Safety Reversal System

    The door will not move more than an inch (2.5 cm), and the opener lights will flash. The garage door opener will not close from a remote if the indicator light in either sensor is off (alerting you to the fact that the sensor is misaligned or obstructed).
  • Page 30: Operation

    • The wall-mounted Door Control: Hold the push button or bar down until the door starts to move. • The Keyless Entry (See Accessories): If provided with your garage door opener, it must be programmed before use. See Programming. When the opener is activated (with the safety reversing sensor correctly installed and aligned) 1.
  • Page 31: Using The Wall-Mounted Door Control

    Using the Wall-Mounted Door Control THE MULTI-FUNCTION DOOR CONTROL Press the lighted push button to open or close the door. Press again to reverse the door during the closing cycle or to stop the door while it's opening. Light feature Press the Light button to turn the opener light on or off.
  • Page 32: Care Of Your Opener

    CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: Weather conditions may cause some minor changes in door operation requiring some re- adjustments, particularly during the first year of operation. Pages 27 and 28 FORCE CONTROLS refer to the limit and force adjustments. Only a screwdriver is required.
  • Page 33: Having A Problem

    The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. • Verify the safety sensors are properly installed, aligned and free of any obstructions. Refer to...
  • Page 34: Diagnostic Chart

    Replace Receiver Logic Board. Installed Safety Sensor Your garage door opener is programmed with self-diagnostic capabilities. The “Learn” button/diagnostic LED will flash a number of times then pause signifying it has found a potential issue. Consult Diagnostic Chart below. Symptom: One or both of the Indicator lights on the safety sensors do not glow steady.
  • Page 35: Programming

    The owner of the copyright in the garage door opener does not authorize the purchaser or supplier of the non-rolling code transmitter to circumvent that technical measure.
  • Page 36: Using Multi-Function Door Control

    To Add, Reprogram or Change a Keyless Entry PIN NOTE: Your new Keyless Entry must be programmed to operate your garage door opener. USING THE “LEARN” BUTTON 1. Press and release the “learn” button on motor unit. The learn indicator light will glow steadily for 30 seconds.
  • Page 37: Repair Parts

    REPAIR PARTS Rail Assembly Parts Installation Parts KEY PART NO. NO. PART 41A5273-14 953CB 10A20 29B137 41A2828 41B4494-1 41A4353 41A5047 178B35 178B34 12B776 41A5034 41A5266-1 41A4675-7 114A2466 114A2466SP Owner’s manual - Spanish DESCRIPTION 41A4796 Hardware bag 41A4795 Hardware bag (includes sprocket coupling) 12B569-1 Left rail bracket...
  • Page 38: Motor Unit Assembly Parts

    Motor Unit Assembly Parts PART DESCRIPTION 31D477 Drive shaft cover 41B4245 Line cord 30B363 Capacitor – 1/2 HP 12A373 Capacitor bracket 41A3150 Terminal block w/screws 41D4671 Limit switch assembly 12D630 Bracket: light socket, limit switch 41A5388 Motor drive assy complete with: 144B41 22T Pulley 144B42...
  • Page 39: Accessories

    940CB SECURITY✚ ® Keyless Entry: Enables homeowner to operate garage door opener 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.
  • Page 40: Warranty

    This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Models PD420 and PD420-2: The motor is warranted to be free from any defect in materials and/or workmanship for a period of 72 full months (6 years) from the date of purchase.

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