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Chamberlain CSO 1/2HP - page 1
MODEL CSO – 1/2HP COMMERCIAL STRENGTH OPERA T OR For Residential and Light Duty Commercial Use Install on Sectional Doors Only OWNER'S MANUAL H I G H L O W N O R M A L H I G H L O W N O R M A L UP FORCE DOWN FORCE ® ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after inst ...
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Chamberlain CSO 1/2HP - page 2
Start by reviewing these important safety alert symbols 2 When you see these safety symbols on the following pages, they will alert you to the possibility of serious injuries or death if you do not comply with the corresponding instructions. The hazard may come from something mechanical or from electric shock. Read the instructions carefully. When ...
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Chamberlain CSO 1/2HP - page 3
3 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. Garage doors, door springs, cables, pulleys, brackets and their hardware, are under extreme tension and can cause serious inju ...
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Chamberlain CSO 1/2HP - page 4
4 Safety Reversing Sensor Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum, door with glass panels, etc.). See page 22 for details. Support bracket & fastening hardware is required. See page 15. — — — — — — — — Door Center Header Wall Safety Reversing Sensor Floor must be ...
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Chamberlain CSO 1/2HP - page 5
5 Straight Door Arm Door Bracket Safety Labels and Literature "C" Wrap (2) Safety Reversing Sensor Mounting Bracket With Slot (2) Door Bracket Plate Curved Door Arm Safety Reversing Sensor Mounting Bracket With Square Holes (2) Door Control Button Rail Support Bracket Header Bracket with Clevis Pin and Fastener UP CEILING MOUNT ONLY 2 -Co ...
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Chamberlain CSO 1/2HP - page 6
Lock Washer 5/16" (4) Nut 5/16"-18 (6) Clevis Pin 5/16"x2-3/4" (1) NOTICE Handle Insulated Staples (10) Assembly Hardware Installation Hardware Dry Wall Anchors (2) Clevis Pin 5/16"x1" (2) Hex Screw 5/16"-18x7/8" (4) Rope Nut 5/16"-18 (5) Washered Screw 5/16"-18x1/2" (4) (2 -mounted in opener) ...
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Chamberlain CSO 1/2HP - page 7
7 Assembly Step 1 Assemble the Rail & Attach the Chain Pulley Bracket T o avoid installation difficulties, do not run the garage door opener until instructed to do so. Assembly Section: Pages 7 – 10 Right Wrong When tightening the screws, be sure to keep bracket parallel to the rail. Otherwise, the rail may bow when the opener is operated. ? ...
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Chamberlain CSO 1/2HP - page 8
TO GARAGE DOOR TO GARAGE DOOR TO GARAGE DOOR TO GARAGE DOOR Temporary Stop Screwdriver Trolley Trolley Stop Hole Hex Screw 5/16"-18x7/8" Nut 5/16"-18 Lock Washer 5/16" Trolley Threaded Shaft Lock Washer 5/16" Outer Nut 5/16" Inner Nut 5/16" Trolley Assembly Step 2 Install the Trolley on the Rail • Place the powe ...
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Chamberlain CSO 1/2HP - page 9
Assembly Step 4 Attach the Chain & Rail Support Bracket 1/4"-20x5/8" Hex Screws with Lock Washers Rail Support Bracket 5/16"-18x1/2" Washered Screw 5/16"-18x1/2" Washered Screw #8-32x3/8" Screw Power Head Side Flange Power Head Back Flange Sprocket Chain Spreader Power Head 9 T o attach the rail support bracke ...
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Chamberlain CSO 1/2HP - page 10
• Spin the inner nut and lock washer down t he threaded shaft, away from t he t rolley . • T o tight en the chain, t ur n out er nut in the direction shown. As you turn the nut, keep the chain from twisting. • When the chain is approximat ely 1/2" above the base of the rail at its midpoin t, re-tight en the inner nut to secure the ad jus ...
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Chamberlain CSO 1/2HP - page 11
• Open your door to the highest point of travel as shown. Draw an intersecting horizontal line on the header wall 2" above the high point. This height will provide travel clearance for the top edge of the door. Header Wall Ceiling Track Highest Point of Travel Door 2" 11 Proceed to Step 2, page 12. Vertical Guideline Finished Ceiling Ve ...
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Chamberlain CSO 1/2HP - page 12
Lag Screws 5/16"x9x1-5/8" Highest Point of Travel (of Garage Door) Vertical Center Line Header Wall Garage Door UP CEILING MOUNT ONLY Wall Mounting Holes Optional Wall Mounting Holes The nail hole is for positioning only. You must use lag screws to mount the header bracket. UP CEILING MOUNT ONLY Door Spring Header Bracket 2x4 Structural S ...
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Chamberlain CSO 1/2HP - page 13
Header Bracket Chain Pulley Bracket Temporary Support Header Wall Garage Door Rail INCREASE DOWN TRAVEL UP Clevis Pin 5/16"x2-3/4 " Ring Fastener Header Bracket Chain Pulley Bracket Rail • 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&apo ...
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Chamberlain CSO 1/2HP - page 14
Installation Step 4 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. 14 CAUTION CAUTION Trolley Trolley Release Arm • If the top panel hits the trolley when you raise the door, pull down on the trolley release arm to disconnect the inner and outer se ...
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Chamberlain CSO 1/2HP - page 15
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 in ceiling before installing the opener. The bracket and fastening hardware are not suppli ...
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Chamberlain CSO 1/2HP - page 16
Installation Step 6 Install the Door Control 16 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. Install the Door Control (or any additional push buttons) out of the reach of children and away from all moving parts of the door and door hardware, b ...
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Chamberlain CSO 1/2HP - page 17
75 Watt Max. Light Bulb Install the Light • Install a 75 watt maximum light bulb in the socket. The light will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the light will turn OFF. • If the bulb burns out prematurely due to vibration, replace with a standard neck "Garage Door Opener" bulb. Insta ...
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Chamberlain CSO 1/2HP - page 18
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 type outlet. Installation Step 9 Electrical Requirements Ground Tab Gre ...
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Chamberlain CSO 1/2HP - page 19
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. Without a properly working safety reversing sensor, persons (particularly children) could be killed by a closing garage door. Read and follow all instructions. To ...
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Chamberlain CSO 1/2HP - page 20
Lag Screw 1/4x1-1/2" Screw #10-32x3/8" Lock Nut 1/4"-20 Lock Nut #10x32 Insulated Staples Carriage Bolt 1/4"-20x1/2" Installation Step 10 Install the Safety Reversing Sensor (Receiving and Sending Eyes) Mounting Bracket With Square Holes #10-32x3/8" Screws "C" Wrap #10-32 Lock Nuts Garage WALL or DOOR TRACK I ...
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Chamberlain CSO 1/2HP - page 21
Invisible Light Beam Protection Area Sensor Sensor Connect Wire to Opener Terminals Bell Wire Bell Wire Finished Ceiling Sensor Connections Door Control Connections (dotted line) OPENER TERMINAL SCREWS 1 2 3 • Center each sensor unit in a "C" wrap with lenses pointing toward each other across the door (see Figure 7). • Secure sensors ...
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Chamberlain CSO 1/2HP - page 22
Vertical Guideline Door Bracket Nut 5/16"-18 Carriage Bolt 5/16"-18x2-1/2" Lock Washer 5/16" Vertical Guideline Door Bracket Location Header Bracket Door Bracket Door Bracket Plate Inside Edge of Door or Reinforcement Board Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, aluminum, steel, ...
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Chamberlain CSO 1/2HP - page 23
Installation Step 12 Connect Door Arm to Trolley 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 2: • Bring arm sections together. Find two pairs of holes that line up an ...
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Chamberlain CSO 1/2HP - page 24
Adjustment Step 1 Adjust the UP and DOWN Limits Do not make any limit adjustments until the Safety Reversing Sensors are completely installed. 24 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. The door will reverse in t ...
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Chamberlain CSO 1/2HP - page 25
Adjustment Step 2 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 required to close the door. Do not use the force adjustments to compe ...
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Chamberlain CSO 1/2HP - page 26
Adjustment Step 4 T est the Safety Reverse System Test: • Place a one-inch board (or a 2x4 laid flat) on the floor, centered under the garage door. • Operate the door in the down direction. The door must reverse on striking the obstruction. Adjustment: If the door stops on the obstruction, it is not traveling far enough in the down direction. ? ...
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Chamberlain CSO 1/2HP - page 27
IMPORT ANT SAFETY INSTRUCTIONS T o 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 a 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 ...
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Chamberlain CSO 1/2HP - page 28
To open the door manually: The door should be fully closed if possible. Pull down on the red manual release handle and lift the door manually. To reconnect the door to the opener, press the Door Control button. 28 Activate the opener with any of the following devices: • The Remote Control Transmitter. Hold push button down until the door starts t ...
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Chamberlain CSO 1/2HP - page 29
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. Do not allow children to operate the door control or remote control transmitter(s). A moving garage door could injure or kill someone under it. Activate the opener only when you can see the door cle ...
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Chamberlain CSO 1/2HP - page 30
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 10. 3. Is there a build-up of ice or snow under the door? The door may be froz ...
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Chamberlain CSO 1/2HP - page 31
Having a Problem? (continued) Situation Probable Cause & Solution The opener strains or maximum force is needed to operate door: The door may be out of balance or the springs are broken. Close the door and use the manual release handle to disconnect the trolley. Open and close the door manually. A properly balanced door will stay in any point o ...
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Chamberlain CSO 1/2HP - page 32
7 UP CEILING MOUNT ONLY 12 1 NOTICE 5 8 13 9 11 10 14 6 12VDC 3 4 15 2 2 1 6 3 RAIL GREASE NO. 83A4 7 4 5 8 TO GARAGE DOOR TO GARAGE DOOR TO GARAGE DOOR TO GARAGE DOOR Repair Parts Rail Assembly Parts Installation Parts 32 KEY PART NO. NO. DESCRIPTION 1 1A995 Master link kit 2 41A2780 Chain pulley bracket 3 41A3489 Complete trolley assembly 4 1B493 ...
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Chamberlain CSO 1/2HP - page 33
Repair Parts Opener Assembly Parts 1 9 7 12 13 14 15 18 4 8 11 17 10 16 3 5 6 18 15 2 DN UP Brown Wire (Down) Contact LIMIT SWITCH ASSY. Grey Wire Yellow Wire (Up) Contact Center Limit Contact Drive Gear KEY PART NO. NO. DESCRIPTION 1 41D4478 Rail support bracket assembly kit 2 144B18 Pulley (Chain) 3 41C4470 Gear and sprocket assy. Complete with: ...
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Chamberlain CSO 1/2HP - page 34
1 2 3 4 5 6 7 8 9 0 ENTER LIGHT LOCK Accessories A vailable for your Opener 853CB 760CB 740CB 7702CB Multi-Function Standard Size Remote Control: Includes visor clip. Keyless Entry: Enables homeowner to operate garage door opener from outside by entering code on specially designed keypad. Outside Keylock: Opens the garage door automatically from ou ...
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Chamberlain CSO 1/2HP - page 35
Index Access Door/Outside Quick Release Accessory ..........................................................................................4, 34 Chain Tension ............................................................................................................................... .............4, 10, 31 Electrical Safety Warnings ............ ...
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Chamberlain CSO 1/2HP - page 36
CHAMBERLAIN SER VICE IS ON CALL OUR LARGE SERVICE ORGANIZA TION SP ANS AMERICA INST ALLA TION AND SERVICE INFORMA TION IS AS NEAR AS YOUR TELEPHONE SIX DA YS A WEEK. SIMPL Y DIAL OUR TOLL FREE NUMBER: 1-800-528-9131 HOURS: (Mountain Std. Time) 6:00 A.M. TO 6:00 P .M. - Monday through Friday 7:00 A.M. TO 3:00 P .M. - Saturday Closed Sunday For profe ...
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