The Chamberlain Group, Inc. A DUCHOSSOIS ENTERPRISE 845 Larch Avenue Elmhurst, Illinois 60126 TM Complies with UL 325 Regulations effective January 1, 1993.
CONTENTS PAGE CONTENTS PAGE Attach manual release rope and handle.............19 Electrical requirements ........................................20 Safety reversing sensor information ....................21 Install the safety reversing sensor .................22, 23 Fasten door bracket (sectional door) ...................24 Fasten door bracket (one-piece door)..................25 Connect door arm to trolley (sectional door)........
You'll Need Tools During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below. Pencil Carpenter's Level 1 2 Hack Saw Tape Measure Wire Cutters Drill Stepladder Claw Hammer 3/16", 5/16" and 5/32" Drill Bits 1/2" and 7/16" Sockets and Wrench Pliers Screwdriver WARNING Adjustable End Wrench CAUTION To avoid damage to the garage door and opener, disable locks before installing and operating the opener.
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. FINISHED CEILING Support bracket & fastening hardware is required. See page 13. Slack in chain tension is normal when garage door is closed.
One-Piece Door without Track One-Piece Door Installation Before you begin, survey your garage area to see whether any of the conditions below apply to your installation. FINISHED CEILING Support bracket & fastening hardware is required. See page 17. Slack in chain tension is normal when garage door is closed.
Opener 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.
Group all hardware found in all packages contained in the opener carton into the two kits illustrated below. Installation Hardware Kit # 41A2770 E AS RE IL G 3A4 .
Assembly Step 1 CAUTION Attach the T-rail to the Opener To fasten rail, use only those screws mounted in top of the opener. Any other screws will cause serious damage to the opener. For Models 1260, 1260-266, 1255,1255-266, 1250, 1250-266, 1245, 1245-266 and 1240 USE ONLY THIS TYPE AND SIZE SCREW 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.
Assembly Step 1 CAUTION Attach the T-rail to the Opener To fasten rail, use only those screws mounted in the top of the opener. Any other screws will cause serious damage 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. • Align T-rail and styrofoam over opener sprocket.
Assembly Step 2 WARNING Attach the Chain Spreader and Re-install the Chain Serious injury can result if fingers become entangled in moving opener sprocket. Attach sprocket cover securely. Never operate opener while your hand is near the opener sprocket. For Models 1256 and 1246 only #8x1" Hex Screw USE ONLY THIS TYPE AND SIZE SCREW • 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.
Assembly Step 3 Tighten the Chain (All Models) Lock Washer Outer Nut Inner Nut • 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. • When the chain is approximately 1/2" above the base of the T-rail at its midpoint, re-tighten the inner nut to secure the adjustment. Sprocket noise can result if chain is either too loose or too tight.
Installation Section: Pages 12 – 27 Installation Step 1 WARNING Determine Header Bracket Location If the header bracket is not rigidly fastened to a structural support on the header wall or ceiling, the safety reverse system may not work properly (see page 30). The door might not reverse when required, and could cause serious injury or death. The garage door springs, cables, pulleys, brackets and their hardware are under extreme tension. Do not attempt to loosen, move or adjust them yourself.
ONE-PIECE Door Without Track Read the Safety Instructions on page 12. They also apply to doors without tracks. Unfinished Ceiling Header Wall Vertical Centerline • 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. See page 14.
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. Installation Step 2 Install the Header Bracket Fasten the Header Bracket to the Wall • 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).
Installation Step 3 Attach the T-rail to the Header Bracket • 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. • Position the chain pulley bracket against the header bracket. • Align the bracket holes and join with a clevis pin as shown. • Insert a ring fastener to secure.
Installation Step 4 CAUTION Position the Opener To prevent damage to steel, aluminum, fiberglass or glass panel doors, do not rest the opener on the door without using a 2x4. 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 WARNING Hang the Opener The opener could fall and injure someone if it is not properly secured. Fasten the opener securely to structural supports of the garage. 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. The bracket and fastening hardware are not supplied.
WARNING Installation Step 6 Install the Door Control • Strip 1/4" of insulation from one end of the bell wire; connect the wire to the two screw terminals on the back of the door control by color: white to 2 and white/red to 1. • Locate the door control within sight of the door at a minimum height of 5 feet where small children cannot reach, and away from all moving parts of the door and door hardware. Fasten the Lighted Door Control Button securely with 6ABx1-1/2" screws.
Installation Step 7 Figure 1 Install the Light(s) and the Lens(es) (Models 1250, 1250-266, 1260, 1260-266, & 1260-166 Only) Lens Guide 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. • If the bulbs burn out prematurely due to vibration, replace with a standard-neck "Garage Door Opener" bulb. Lens Tab Lens Slot 75 Watt Max.
Installation Step 9 WARNING Electrical Requirements To prevent electrocution or fire, installation and wiring must be in compliance with local electrical and building codes. 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. WARNING Without a properly working safety reversing sensor, persons (particularly children) could be injured or killed by a closing garage door. Read and follow all instructions.
Figure 2 Installation Step 10 Garage WALL or DOOR TRACK Installation Install the Safety Reversing Sensor (Receiving and Sending Eyes) Mounting Bracket With Square Holes 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.
• 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.
Installation Step 11 CAUTION Fasten Door Bracket To prevent damage to steel, aluminum, fiberglass or glass panel doors, always reinforce the inside of the door both vertically and horizontally with angle iron. 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.
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 — Finished Ceiling — 2x4 Support Header Bracket Door Bracket Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, aluminum, steel, door with glass panel, etc.).
Installation Step 12 Connect Door Arm to Trolley Follow instructions which apply to your door type as illustrated below and on page 27. SECTIONAL Doors Only Make sure garage door is fully closed. Pull the manual release handle to disconnect the outer trolley from the inner trolley. Slide the outer trolley back (away from the door) about 2" as shown in Figures 1, 2 and 3. Figure 1: • Fasten straight door arm section to outer trolley with a clevis pin. Secure the connection with a ring fastener.
All ONE-PIECE Doors Door Bracket 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. • Secure with a ring fastener.
Adjustment Section: Pages 28 – 30 Adjustment Step 1 WARNING Adjust the UP and DOWN Limits Improper adjustment of the travel limits will interfere with the proper operation of the safety reverse system. The door might not reverse when required and could seriously injure or kill someone under it. Test the safety reverse system following all adjustments to the travel limits. See page 30. Limit adjustment settings regulate the points at which the door will stop when moving up or down.
Adjustment Step 2 WARNING Adjust the Force Too much force on the door will interfere with the proper operation of the safety reverse system. The door might not reverse properly when required and could seriously injure or kill someone under it. Do not increase the force beyond the minimum amount required to close the door. Do not use the force adjustments to compensate for a binding or sticking garage door. Test the safety reverse system following all adjustments to force levels. See page 30.
Adjustment Step 3 WARNING Test The Safety Reversing Sensor Without a properly working safety reversing sensor, persons (particularly children) could be seriously injured or killed if trapped by a closing garage door. Repeat this test once a month. • 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.
IMPORTANT SAFETY INSTRUCTIONS WARNING 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. 3. Operate opener only when the door is in full view and free from any obstruction. Keep the door in sight until it is completely closed. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 4. Check safety reversal system monthly.
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. If open, the door will close. If closed, the door will open. 2. If closing, the door will reverse. 3.
Receiver and Remote Control Programming NOTICE: To comply with FCC rules, adjustment or modification of this receiver and/or transmitter are prohibited, except for changing the code setting or replacing the transmitter battery. THERE ARE NO OTHER USER SERVICEABLE PARTS. WARNING Children operating or playing with a garage door opener can injure themselves or others. The garage door could close and cause serious injury or death.
Having a Problem? Situation Probable Cause & Solution The opener doesn't operate from either the door control or the remote control: 1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light, check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.) 2. Have you disabled all door locks? Review installation instruction warnings on Page 11. 3. Is there a build-up of ice or snow under the door? The door may be frozen to the ground.
Having a Problem? (continued) Situation Probable Cause & Solution The door opens but won't close: 1. If the opener lights blink, check the safety reversing sensor. See page 23. 2. If the opener lights do not blink and it is a new installation, check the down force. See Adjustment Step 2, page 29. For an existing installation, see below. Repeat the safety reverse test after the adjustment is complete. The door reverses for no apparent reason and opener lights don't blink: 1.
Repair Parts Rail Assembly Parts 5 3 1 E AS RE IL G 3A4 .8 NO RA 4 2 6 KEY NO. PART NO. DESCRIPTION 1 2 3 4 5 6 1A995 41A4813 41A3489 183B99 41D3484 83A4 Master link kit Chain pulley bracket Complete trolley assembly One-piece T-rail Full chain assembly Rail grease Installation Parts 7 4 LOCK LIGHT 1 6 5 3 NOT 2 ICE 9 KEY NO. PART NO.
Repair Parts Opener Assembly Parts 1 1A 2 5 2A 4 3 8A 7 8 7 21 17 20 9 19 10 11 18 6 8 (Down) Contact Brown Wire LIMIT SWITCH ASSY. DN UP Drive Gear Center Limit Contact KEY NO. 1 1A 2 2A 3 4 5 6 7 8 8A 9 10 11 (Up) Contact 14 16 17 12 15 Grey Wire Yellow Wire 13 KEY PART NO. NO. 12 41D3058 PART 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.
Accessories Available For Your Opener Model 1702 Outside Quick Release: Required for a garage with NO access door. Model 60 Outside Keylock: Opens the garage door automatically from outside when remote control is not handy. Model 1708LM 8 foot Complete Rail: To allow an 8 foot door to open fully. Model 1710LM Model 66LM Model 81LM "Smart" Remote Control: Includes visor clip. Model 61LM Single-Function Standard Size Remote Control: Includes visor clip.
Index Access Door/Outside Key Release Accessory ...............................................................................................4, 5 Chain Tension ..............................................................................................................................................4, 5, 11 Electrical Safety Warnings........................................................................................................................
LIFT-MASTER SERVICE IS ON CALL OUR LARGE SERVICE ORGANIZATION SPANS AMERICA HOW TO ORDER REPAIR PARTS TM Selling prices will be furnished on request or parts will be shipped at prevailing prices and you will be billed accordingly. ® WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: INSTALLATION AND SERVICE INFORMATION IS AS NEAR AS YOUR TELEPHONE SIX DAYS A WEEK.
