Table of Contents
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Model 1260 - 1/2HP
Model 1260-166 - 1/2HP
Model 1260-266 - 1/2HP
Model 1250 - 1/3HP
Model 1250-266 - 1/3HP
Model 1255 - 1/2HP
Model 1255-166 - 1/2HP
Model 1255-266 - 1/2HP
Model 1245 - 1/3HP
Model 1245-266 - 1/3HP
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 and adjustment of the opener are required to ensure safe
operation.
The model number label is located on the front panel of your opener.
TM
Garage Door Opener
Owner's Manual
(Model Series 1200)
For Residential Use Only
©
©
Owner's Manual
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126
Complies with
UL 325
Regulations
effective
January 1, 1993.
©
Model 1256 - 1/2HP
Model 1246 - 1/3HP
©
Model 1240 - 1/4HP
®
is connected and
®
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Table of Contents
Related Manuals for Chamberlain 1200
Summary of Contents for Chamberlain 1200
- Page 1 Periodic checks and adjustment of the opener are required to ensure safe operation. The model number label is located on the front panel of your opener. (Model Series 1200) Model 1256 - 1/2HP Model 1246 - 1/3HP ©...
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Page 2: Table Of Contents
When you see this safety symbol on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you do not comply with the corresponding instructions. Read the instructions carefully. -
Page 3: You'll Need Tools
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. -
Page 4: Llustration Of Sectional Door Installation
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 20 for details. -
Page 5: Illustration Of One-Piece Door Installation
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 Safety door must not exceed 1/4". 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. -
Page 6: Carton Inventory
Your garage door opener is packaged in two cartons which contain all parts illustrated below. If anything is missing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware for installation is shown on page 7. (Models 1256, 1255, 1255-266, (Models 1260, 1260-266, 1255-166, 1246, 1245, 1245-266, &... -
Page 7: Hardware Inventory
Group all hardware found in all packages contained in the opener carton into the two kits illustrated below. Hex Screw 5/16"-18x7/8" (4) Lag Screw 5/16"-18 x1-7/8" (4) Carriage Bolt 5/16"-18x2-1/2" (2) Clevis Pin 5/16"x2-3/4" (1) Lag Screw 1/4x1-1/2" (4) Hex Screw 1/4-20x1-1/2"... -
Page 8: Assembly Section - Pages 8 - 11 Fasten T-Rail To Opener
Assembly Step 1 Attach the T-rail to the Opener For Models 1260, 1260-266, 1255,1255-266, 1250, 1250-266, 1245, 1245-266 and 1240 See page 9 for Models 1256 and 1246. • Remove the two washered screws mounted in top of opener • Align T-rail at an angle with opener so one hole in T-rail and opener line up. - Page 9 Assembly Step 1 Attach the T-rail to the Opener For Models 1256 and 1246 only • Place the opener on packing material to protect the cover. • Remove the (2) 5/16"-18x1/2" washered screws mounted in the top of the opener. •...
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Page 10: Attach Chain Spreader, Re-Install Chain
Assembly Step 2 Attach the Chain Spreader and Re-install the Chain For Models 1256 and 1246 only • Line up the holes in the chain spreader with the holes in the opener as shown. The slot in the chain spreader must fit over the T-rail flange. •... -
Page 11: Tighten The Chain
NOTE: During future maintenance, ALWAYS pull the manual release handle to disconnect trolley before adjusting chain. You have now finished assembling your garage door opener. Please read the following warnings before proceeding to the installation section. IMPORTANT INSTALLATION INSTRUCTIONS WARNING... -
Page 12: Installation Section: Pages
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 Doors and ONE-PIECE Door With Track Vertical Guideline Header Wall •... -
Page 13: One-Piece Door
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. -
Page 14: Install The Header Bracket
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"... -
Page 15: Attach The T-Rail To Header Bracket
Installation Step 3 Attach the T-rail to the Header Bracket Header Wall Header Bracket Chain 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. -
Page 16: Position The Opener
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. -
Page 17: Hang The Opener
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. -
Page 18: Install The Door Control
• 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. -
Page 19: Install The Light(S) And Lens(Es)
Installation Step 7 Install the Light(s) and the Lens(es) Install the light(s): • Install a 75 watt maximum light bulb in each socket. The light(s) will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the light(s) will turn OFF. •... -
Page 20: Electrical Requirements
If permanent wiring is required by your local code, refer to the following procedure: WARNING To prevent electrocution, remove power from the garage door opener and from the circuit you plan to use for the permanent connection. To make a permanent connection through the 7/8"... -
Page 21: Safety Reversing Sensor Information
To protect small children, install the safety reversing sensor so that the beam will be no higher than 4"-6" above the garage floor. Disconnect power to the garage door opener before installing the safety reversing sensor. Facing the door from inside the garage... -
Page 22: Install The Safety Reversing Sensor
Installation Step 10 Install the Safety Reversing Sensor (Receiving and Sending Eyes) Figures 2 , 3 and 4 show recommended assembly of bracket(s) and "C" wrap based on the wall installation of the sensors on each side of the garage door as shown on page 17, or on the garage door tracks themselves. - Page 23 • Insert the wire connector into each sensor and push until you hear a click, Figure 7. The white tab on the sensor should be flush with the back of the connector. — Finished Ceiling — Bell Wire Invisible Light Beam Protection Area Sensor •...
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Page 24: Fasten Door Bracket (Sectional Door)
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. -
Page 25: Fasten Door Bracket (One-Piece Door)
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 Door Bracket • Center the bracket on the top of the door, in line with the header bracket as shown. -
Page 26: Connect Door Arm To Trolley (Sectional Door)
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. -
Page 27: Connect Door Arm To Trolley (One-Piece Door)
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. •... -
Page 28: Adjustment Section: Pages
Adjustment Section: Pages 28 – 30 Adjustment Step 1 Adjust the UP and DOWN Limits 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. -
Page 29: Force Adjustments
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. -
Page 30: Test The Safety Reversing Sensor
The door will not move more than an inch, and the opener light(s) 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 31: Operation Safety Instructions
. Repairs to cables, spring assemblies and other hardware must be made by a professional garage door person. 7. Disconnect the electric power from the garage door opener before making any repairs or removing the covers. -
Page 32: Operation Of Your Opener
Activate the opener with any of the following devices: 1. The Remote Control Transmitter. Hold push button down until the door starts to move. 2. The Door Control. Hold button/push bar down until the door starts to move. 3. The Outside Keylock or Keyless Entry. (See Accessories) When the Opener is Activated: 1. -
Page 33: Receiver And Remote Control Programming
THERE ARE NO OTHER USER SERVICEABLE PARTS. Your garage door opener receiver and remote control transmitter have been set at the factory to a matching code. The door will open when you press the remote control push button. -
Page 34: Having A Problem
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. - Page 35 The opener lights: . . . don't turn on: Replace the light bulbs (75 watts maximum). Use a standard neck garage door opener bulb if regular bulb burns out..don't turn off: Is the Light feature on ? Turn it off.
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Page 36: Repair Parts, Rail Assembly
Rail Assembly Parts Installation Parts LO CK LIG HT PART DESCRIPTION 41A4202A Multi-function door control panel 41A4166 Lighted door control button 10A20 3V2032 Lithium battery 41A3984-7 Transmitter case, cover & screw only 29B137 Transmitter visor clip 41A2828 Manual rope & handle assembly 217A238 2-Conductor bell wire - white &... -
Page 37: Repair Parts, Opener Assembly
Opener Assembly Parts (Down) LIMIT SWITCH ASSY. Contact Brown Wire Drive Gear Center Limit (Up) Contact Contact KEY PART NO. NO. DESCRIPTION 41A4208 Chain spreader w/screws (1256, 1246) 31D380 Sprocket cover (all other models) 41C4206A Gear and sprocket assy. (1256, 1246) 41C4220A Gear and sprocket assy. -
Page 38: Accessories
10 foot Complete Rail: To allow a 10 foot door to open fully. Model 66LM Keyless Entry: Enables homeowner to operate garage door opener from outside by entering code on specially designed keyboard. Wire-In Light Control: Model 722LM Controls interior or exterior lights. -
Page 39: Index
Access Door/Outside Key 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... -
Page 40: How To Order Repair Parts
LIFT-MASTER GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY Chamberlain/Lift-Master warrants to the first retail purchaser of this product that it will be free from any defect in materials and/or workmanship for a period of twelve full months from the date of purchase. The product must be used in complete accordance with Lift- Master's instructions for installation, operation and care.