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The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
TM 845 Larch Avenue
Elmhurst, Illinois 60126
Complies with
UL 325
Regulations
effective
®
January 1, 1993.
Garage Door Opener
Owner's Manual
(Model Series 1200)
For Residential Use Only
© ©
Model 1260 - 1/2HP Model 1256 - 1/2HP
Model 1260-166 - 1/2HP Model 1246 - 1/3HP
Model 1260-266 - 1/2HP
Model 1250 - 1/3HP
Model 1250-266 - 1/3HP
© ©
Model 1255 - 1/2HP Model 1240 - 1/4HP
Model 1255-166 - 1/2HP
Model 1255-266 - 1/2HP
Model 1245 - 1/3HP
Mod
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CONTENTS PAGE CONTENTS PAGE Attach manual release rope and handle.............19 A review of safety alert symbols.............................2 Electrical requirements ........................................20 You'll need tools .....................................................3 Safety reversing sensor information ....................21 Safety information regarding garage door locks Install the safety reversing sensor .................22, 23 and ropes.........................................
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1 You'll Need Tools During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below. Pencil Carpenter's
Level Hack Saw Tape Measure Wire Cutters Drill Claw Hammer 3/16", 5/16" and
5/32" Drill Bits Pliers 1/2" and 7/16" Sockets
Stepladder Screwdriver Adjustable End Wrench and Wrench WARNING CAUTION To avoid damage to the garage door and An unbalanced garage door might not reverse opener, disable locks before installing and when required and someone
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Sectional 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. Horizontal and vertical reinforcement See page 13. is needed for lightweight garage doors Slack in chain tension (fiberglass, steel, aluminum, is normal when door with glass panels, etc.). garage door is closed. See page 20 for details. Header Wall Extension Spring OR Torsion Spring Door Ce
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FINISHED CEILING Support bracket & fastening hardware is required. See page 17. 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. Header Wall Closed Position Access Door Chain Pulley Bracket Trolley Header Bracket T-rail Door Bracket Manual Release Straight Curved Rope & Handle Door Door Garage Safety Reversing Sensor
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LOCK LIGHT 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. (Models 1260-266 & (All Models except (Models 1256, 1255, 1255-266, 1255-266 (2) (Models 1260, 1260-266, 1256 & 1246) 1255-166, 1246, 1245, 1245-266, & 1240) All Other Models (1)) 1260-166, 1250 &1250-266) Sprocket Cover Remote C
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NOTICE Group all hardware found in all packages contained in the opener carton into the two kits illustrated below. Installation Hardware Kit # 41A2770 Hex Screw 5/16"-18x7/8" (4) Nut 5/16"-18 (6) Lock Washer 5/16" (6) Rail Grease Screw Lag Screw Ring Fastener (3) 6ABx1" (2) 5/16"-18 x1-7/8" (4) Handle Carriage Bolt Insulated Staples (10) 5/16"-18x2-1/2" (2) Dry Wall Anchors (2) Clevis Pin Clevis Pin Rope 5/16"x2-3/4" (1) 5/16"x1" (2) Safety Reversing Sensor
Installation Hardware Kit #41A4116
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Assembly Step 1 CAUTION Attach the T-rail to the Opener To fasten rail, use only those screws mounted For Models 1260, 1260-266, 1255,1255-266, in top of the opener. Any other screws will 1250, 1250-266, 1245, 1245-266 and 1240 cause serious damage to the opener. USE ONLY THIS TYPE AND SIZE See page 9 for Models 1256 and 1246. Washered Screw SCREW 5/16"-18x1/2" • Remove the two washered screws mounted in top of opener Styrofoam • Align T-rail at an angle with opener so one hole in T-rail T-rail
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Assembly Step 1 CAUTION Attach the T-rail to the Opener To fasten rail, use only those screws mounted For Models 1256 and 1246 only in the top of the opener. Any other screws will cause serious damage to the opener. Styrofoam • Place the opener on packing material to protect Packaging the cover. USE ONLY THIS Chain • Remove the (2) 5/16"-18x1/2" washered screws TYPE AND SIZE T-rail mounted in the top of the opener. SCREW Washered • Align T-rail and styrofoam over opener sprocket. Screws 5/16"-1
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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 For Models 1256 and 1246 only sprocket cover securely. Never operate opener while your hand is near the opener sprocket. #8x1" USE ONLY Hex Screw THIS TYPE Washers AND SIZE SCREW • Line up the holes in the chain spreader with the Chain holes in the opener as shown. The slot in the chain Spreader Slot spreader must fit over the T-rail
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Assembly Step 3 Tighten the Chain (All Models) Lock Outer Nut Washer Inner Nut • Spin the inner nut and lock washer down the To Tighten Outer Nut threaded shaft, away from the trolley. To Tighten • To tighten the chain, turn outer nut in the direction Inner Nut shown. As you turn the nut, keep the chain from twisting. • When the chain is approximately 1/2" above the Trolley base of the T-rail at its midpoint, re-tighten the inner nut to secure the adjustment. Sprocket noise can result if chain
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Installation Section: Pages 12 – 27 Installation Step 1 WARNING Determine Header Bracket Location If the header bracket is not rigidly fastened to Installation procedures vary according to garage a structural support on the header wall or door types. Follow the instructions which apply to ceiling, the safety reverse system may not your door. 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, S
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ONE-PIECE Door Without Track Read the Safety Instructions on page 12. They also apply to doors without tracks. Unfinished Header Wall Ceiling Vertical Centerline 2x4 • Close the door and mark the Structural inside vertical centerline of Supports your garage door. Extend the line onto the header wall above door. If headroom clearance is 2x4 minimal, you can install the Vertical header bracket on the ceiling. Centerline of Garage Door See page 14. OPTIONAL CEILING MOUNT FOR HEADER BRACKET • If you
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You can attach the header bracket either to the Installation Step 2 wall above the garage door, or to the ceiling. Follow the instructions which will work best for Install the Header Bracket your particular requirements. Fasten the Header Bracket to the Wall • Center the bracket on the vertical guideline with • Mark either set of bracket holes (do not use the the bottom edge of the bracket on the horizontal holes designated for ceiling mount). Drill 3/16" pilot line as shown (with the arrow poin
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INCREASE TRAVEL DOWN UP 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. Header Wall If the door spring is in the way you'll need help. Header Have someone hold the opener securely on a Bracket temporary support to allow the T-rail to clear the spring. Chain Pulley • Position the chain pulley bracket against the header Bracket bracket. • Align the bracket holes and join with
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Installation Step 4 CAUTION Position the Opener To prevent damage to steel, aluminum, Follow instructions which apply to your door type fiberglass or glass panel doors, do not rest the as illustrated. opener on the door without using a 2x4. 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. T-rail 2x4 You will need help at this point if the ladder is not tall enough. • Open the door all th
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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. Figure 1 St
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LOCK LIGHT RED WHITE 1 2 Installation Step 6 WARNING Install the Door Control Children operating or playing with a garage door opener can injure themselves or others. • Strip 1/4" of insulation from one end of the bell The garage door could close and cause wire; connect the wire to the two screw terminals serious injury or death. on the back of the door control by color: white to 2 Install the Door Control (or any additional push and white/red to 1. buttons) out of the reach of children and awa
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NOTICE Installation Step 7 Figure 1 Install the Light(s) and the Lens(es) (Models 1250, Lens 1250-266, 1260, Guide 1260-266, & Install the light(s): 1260-166 Only) • Install a 75 watt maximum light bulb in each Lens socket. The light(s) will turn ON and remain lit for Tab 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, Lens Slot replace with a standard-neck "Garage Door Opener" bulb. 75 Watt Max. Light
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Installation Step 9 WARNING Electrical Requirements To prevent electrocution or fire, installation and wiring must be in compliance with local To reduce the risk of electric shock, your garage electrical and building codes. 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. To avoid installation difficulties, Right W
