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Garage Door Opener Owner’s Manual Model 5100-2K – 1/2HP Model 5100 -2K - 1/2 HP 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.
During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below. Carpenter's Level Stepladder WARNING An unbalanced garage door might not reverse when required and someone under the door could be seriously injured or killed. If your garage door binds, sticks or is out of balance, call for professional garage door service.
SECTIONAL Door Installation Before you begin, survey your garage area to see whether any of the conditions below apply to your installation. Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum, door with glass panels, etc.). See page 24 for details.
ONE-PIECE Door Installation Before you begin, survey your garage area to see whether any of the conditions below apply to your installation. Header Wall Gap between floor and bottom of door must not exceed 1/4" Safety Reversing Sensor Based on your particular requirements, there are several installation steps which might call for materials and/or hardware not included in the carton.
Carton Inventory Your garage door opener is packaged in one carton which contains all parts illustrated below. If anything is missing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware for assembly and installation is shown on page 7. LO CK LIG HT Multi-Function...
Separate all hardware from the packages in the rail carton and the opener carton as shown below, for the assembly and installation procedures. Washered Screw 5/16" - 18 x 1/2" (2) (mounted in chassis) Threaded Trolley Shaft (1) Hex Screw 5/16"- 18 x 7/8"...
Assembly Section: Pages 8 – 11 To avoid installation difficulties, do not run the garage door opener until instructed to do so. Hex Screws 5/16"-18x7/8" Assembly Step 1 Assemble the T-rail Cable Pulley & Attach the Cable Pulley Bracket Bracket •...
Assembly Step 2 Install the Trolley on the T-rail • Attach the threaded shaft to the trolley with the lock washer and nuts as shown. Lock Washer 5/16" Outer Nut 5/16" Trolley Temporary Stop Screwdriver Assembly Step 3 Fasten the T-rail to the Opener •...
Check to make sure the chain is not twisted. • Remove the screwdriver. Install Chain and Cable In This Direction stall Chain & Cable Chamberlain '92 8/22/90 - 3/6/92 Install Chain and Cable In This Direction Sprocket Cover...
Assembly Step 5 Tighten the Chain & Cable • Spin the inner nut and lock washer down the threaded shaft, away from the trolley. • To tighten the chain, turn outer nut in the direction shown. As you turn the nut, keep the chain from twisting.
Installation Section: Pages 12 – 27 Installation Step 1 Determine Header Bracket Location Installation procedures vary according to garage door types. Follow the instructions which apply to your door. SECTIONAL Door and ONE-PIECE Door With Track Vertical Guideline Header Wall •...
Read the Safety Instructions on page 12. They also apply to doors without tracks. • Close the door and mark the inside vertical centerline of your garage door. Extend the line onto the header wall above door. If headroom clearance is minimal, you can install the header bracket on the ceiling.
Installation Step 2 Install the Header Bracket • Center the bracket on the vertical guideline with the bottom edge of the bracket on the horizontal line as shown (with the arrow pointing toward the ceiling). Header Wall Header Bracket Structural Support 2"...
Installation Step 3 Attach the T-rail to the Header Bracket Header Wall Header Bracket Cable Pulley Bracket Garage Door • Position the opener on the garage floor below the header bracket. Use packing material as a protective base. If the door spring is in the way you'll need help. Have someone hold the opener securely on a temporary support to allow the T-rail to clear the spring.
Installation Step 4 Position the Opener Follow instructions which apply to your door type as illustrated. SECTIONAL Door & ONE-PIECE Door with Track A 2x4 laid flat is convenient for setting an ideal door-to-T-rail distance. • Raise the opener onto a stepladder. You will need help at this point if the ladder is not tall enough.
Installation Step 5 Hang the Opener Two representative installations are shown. Yours may be different. Hanging brackets should be angled, Figure 1, to provide rigid support. On finished ceilings, Figure 2, attach a sturdy metal bracket to structural supports before installing the opener.
• Run the bell wire up the wall and across the ceiling to the opener. Use insulated staples to secure the The Chamberlain Group, Inc wire in several places. Be careful not to pierce the Step 6 Install Lighted Door Control Button wire with a staple, thereby resulting in a short.
Installation Step 7 Install the Light and the Lenses Install the lights • Install a 75 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. •...
Installation Step 9 Electrical Requirements 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. If the plug doesn't fit into the outlet you have, contact a qualified electrician to install the proper outlet.
Information you'll need before you begin the installation of the safety reversing sensor. The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. This is a required safety device and cannot be disabled. Installation procedures are the same for sectional and one-piece doors.
Installation Step 10 Install the Safety Reversing Sensor Figures 2 and 3 show assembly of brackets and "C" wrap based on the recommended installation of the sensors on each side of the garage door as shown on page 21. However, Figures 4 and 5 are variations which may fit your installation requirements better.
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• Insert the wire connector into each sensor and push until you hear a click (Figure 6). The white tab on the sensor should be flush with the back of the connector. Bell Wire Invisible Light Beam Protection Area Sensor •...
Installation Step 11 Fasten Door Bracket Follow instructions which apply to your door type as illustrated below or on page 25. A horizontal brace should be long enough to be secured to 2 vertical supports. A vertical brace should cover the height of the top panel. The illustration shows one piece of angle iron as the horizontal brace.
Installation Step 12 Connect Door Arm to Trolley Follow instructions which apply to your door type as illustrated below and on page 27. Make sure garage door is fully closed. Pull the manual release handle to disconnect the outer trolley from the inner trolley.
All ONE-PIECE Door Installation Procedure Please read and comply with the warnings and reinforcement instructions on page 24. They apply to one-piece doors also. Header Wall 2x4 Support Header Bracket Optional Placement of Door Bracket • Center the bracket on the top of the door, in line with the header bracket as shown.
Assemble the Door Arm: • 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 a clevis pin. •...
Adjustment Section: Pages 28 – 30 Adjustment Step 1 Adjust the UP and DOWN Limits Do not make any limit adjustments until the safety reversing sensors are completely installed. Limit adjustment settings regulate the points at which the door will stop when moving up or down. The door will stop in the up direction if anything interferes with door travel.
Adjustment Step 2 Adjust the Force Force adjustment controls are located on the back panel of the opener. Force adjustment settings regulate the amount of power required to open and close the door. The door will stop in the up direction if anything interferes with its travel.
Adjustment Step 3 Test The Protector System • Press the remote control push button to open the door. • Place the opener carton in the path of the door. • Press the remote control push button to close the door. The door will not move more than an inch, and the opener light(s) will flash for 5 seconds.
IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of severe injury or death to persons: 1. READ AND FOLLOW ALL INSTRUCTIONS. 2. Do not permit children either to operate or to play with the opener. Keep remote control in a location inaccessible to children.
Activate opener with any of the following: 1. The Remote Control: Hold the large push button down until the door starts to move. 2. The Door Control: Hold the push bar down until the door starts to move. 3. The Outside Keylock or Keyless Entry System. (See Accessories.) When the opener is activated with the safety reversing sensor installed and correctly aligned:...
The opener will activate when the LARGE button on the remote(s) is pressed. The multi-function remote(s) can also activate additional garage door openers and/or light control models 874CB and 872CB. Your "Smart" garage door opener will operate with: •...
Situation Probable Cause & Solution 1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light, The opener doesn't check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.) operate from either the door control or 2.
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Situation Probable Cause & Solution The door opens but 1. If the opener lights blink, check the safety reversing sensor. See page 23. won't close: 2. If the opener lights do not blink and it is a new installation, check the down force. See Adjustment Step 2, page 29.
Rail Assembly Parts Installation Parts LO CK LIG HT KEY PART DESCRIPTION 41A4251-3A Multi-function door control panel 10A14 12V battery 29C128 Transmitter visor clip 41A3888-3 Multi-function remote control transmitter, Housing & screw only (no circuit board) 41A2828 Manual release rope & handle assy. 217A238 2-conductor bell wire - white &...
Accessories Available for your Opener 7702CB Outside Quick Release: Required for a garage with NO access door. 760CB Outside Keylock: Opens the garage door automatically from outside when remote control is not handy. 7704CB 8 foot Rail Extension Kit: To allow an 8 foot door to open fully.
Access Door/Outside Quick Release Accessory...4, 5 Chain Tension ...4, 5, 11 Electrical Safety Warnings...2, 20, 31 Garage Door Testing for balance, binding and sticking...3, 28, 31 Determining high point of travel: Sectional Door ...12 One-Piece Door ...13 Disabling existing locks...3, 11 Force Controls Adjustment Procedures ...29 Problems that might require Force adjustments ...34, 35...
CHAMBERLAIN GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product that it is free from defect in materials and/or workmanship for a period of one year from the date of purchase. The proper operation of this product is dependent on your compliance with the Owner’s Manual instructions regarding installation, operation, maintenance and testing.