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Chamberlain M150 - page 1
The Chamberlain Group, Inc. A DUCHOSSOIS ENTERPRISE 845 Larch Avenue Elmhurst, Illinois 60126-1196 For Residential Use Only Garage Door Opener Owner ’ s Manual Model M150 1/2 HP Complies with UL 325 regulations effective January 1, 1993 ® ■ Please read this manual and the enclosed safety materials car efully! ■ Fasten the manual near the gar ...
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Chamberlain M150 - page 2
Start by reviewing these important safety alert symbols: 2 Safety alert symbol review ...........................................2 Safety information and precautions ..............................3 T esting your garage door for binding & balance ..........3 Hardware supplied ........................................................3 Carton inven ...
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Chamberlain M150 - page 3
3 An unbalanced garage door might not rever se when required and someone under the door could be seriously injured or killed. If your gara ge door binds, sticks or is out of balance, call for pr ofessional garage door service . Garage doors, door springs, cables, pulle ys, brackets, and their har dware are under extreme tension and can cause seriou ...
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Chamberlain M150 - page 4
4 Straight Door Arm Section Curved Door Arm Section Header Bracket UP CEILING MOUNT ONLY Safety Reversing Sensor Mounting Bracket With Square Holes (2) "C" Wrap (2) Safety Reversing Sensor Mounting Bracket With Slot (2) 2-Conductor Bell Wire White & White/Red Sprocket Coupling Light Lens Rail Brackets Remote Control Transmitter Visor ...
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Chamberlain M150 - page 5
Y ou may find it helpful to r efer back to this page as you proceed with the installation of your opener . Safety Reversing Sensor Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, steel, aluminum, door with glass panels, etc.). See page 20 for details. Support bracket & fastening hardware is required. Se ...
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Chamberlain M150 - page 6
ASSEMBL Y STEP 1 Fasten the Rail T o the Power Unit 6 Rail Sprocket Rail Assembly Trolley Coupling Rail/Power Unit Bracket Lock Nuts 1/4"-20 Power Unit Sprocket Opener Chassis Foam Packaging Hex Screws 1/4"-20x5/8" ASSEMBL Y STEP 2 Install the Trolley As illustrated above, slide the trolley onto and along the bottom of the rail until ...
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Chamberlain M150 - page 7
ASSEMBL Y STEP 3 Attach the Rail Brackets 7 IMPORT ANT INST ALLA TION INSTRUCTIONS T o r educe the risk of severe injury or death to persons: 1. READ AND FOLLOW ALL INST ALLA TION INSTRUCTIONS 2. Install only on a properly balanced and lubricated garage door . An improperly balanced door may not reverse and could result in severe injury or death. R ...
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Chamberlain M150 - page 8
• Open your door to the highest point of travel as shown. Draw an inter- secting horizontal line on the header wall 3" 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 Door Track 3" Header Wall Highest Point of Travel 3" 8 Proceed t ...
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Chamberlain M150 - page 9
Header Wall Vertical Centerline Vertical Centerline of Garage Door 2x4 Unfinished Ceiling Structural Supports 2x4 Header Support OPTIONAL CEILING MOUNT FOR HEADER BRACKET • 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 instal ...
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Chamberlain M150 - page 10
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 M150 - page 11
Header Bracket Rail Bracket Foam Packaging Opener Carton or Temporary Support Header Wall Garage Door Rail Clevis Pin 5/16" x 2-3/4" Ring Fastener Clevis Pin 5/16"x2-3/4 " Ring Fastener Header Bracket Rail Bracket Rail • Position the opener on the garage floor below the header bracket. Use packing material as a protective base ...
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Chamberlain M150 - page 12
The safety reversing sensor must be connected and aligned correctly befor e the garage door opener will move in the down direction. This is a r equired safety device and cannot be disabled. Installation pr ocedur es ar e the same for sectional and one-piece doors. Be sure power to the opener is disconnected. The sending eye transmits an invisible l ...
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Chamberlain M150 - page 13
#14-10x1-1/2" HH Lag Screw #10-32x3/8" Screw 1/4"-20 Lock Nut #10x32 Lock Nut Staples 1/4"-20x1/2" Carriage Bolts Installation Step 4 Install the Safety Reversing Sensor (Receiving and Sending Eyes) Mounting Bracket With Square Holes #10-32x3/8" Screws "C" Wrap #10 - 32 Lock Nuts Mounting Bracket with Slot 1/ ...
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Chamberlain M150 - page 14
14 Figure 6 1/4-20 x 1-1/2" Hex Bolt "C" Wrap Sensor with Wire Wing Nut Indicator Light 1/4-20 x 1-1/2" Hex Bolt Wing Nut Hardware Shown Actual Size Installation Step 4 (Continued) Install the Safety Reversing Sensor Invisible Light Beam Protection Area Sensor Sensor Bell Wire Foam Packaging Carton 2. Run wires along channels to ...
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Chamberlain M150 - page 15
Installation Step 5 Position the Opener Follow instructions which apply to your door type as illustrated. T o prevent dama g e to steel, aluminum, fiberglass or glass panel doors, do not rest the opener on the door without using a 2x4. SECTIONAL Door or ONE-PIECE Door with T rack A 2x4 laid flat is convenient for setting an ideal door - to-rail dis ...
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Chamberlain M150 - page 16
Installation Step 6 Hang the Opener T wo repr esentative installations are shown. Y ours 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 har dwar e ar e not supplied. ...
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Chamberlain M150 - page 17
Door Control Panel Terminal Screws RED WHITE 1 2 Installation Step 7 Install the Door Control and Connect all Wiring 17 Children operating or playing with a gara g e door opener can injure themselves or others. The garage door could close and cause serious injury or death. Install the door control (or an y additional push buttons) out of the reac h ...
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Chamberlain M150 - page 18
T o 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. If permanent wiring is requir ed by your local code, refer to ...
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Chamberlain M150 - page 19
Installation Step 10 Install the Lights and Lens Installation Step 1 1 Attach the Manual Release Rope and Handle Do not use the red handle to pull the door open or closed. The rope knot could become untied and you could fall. Use the manual release only to disengage the trolley and, if possible, only when the door is closed. Garage doors are heavy. ...
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Chamberlain M150 - page 20
Installation Step 12 Fasten Door Bracket Follow instructions which apply to your door type as illustrated below or on page 21. T o prevent dama g e to steel, aluminum, fiberglass or glass panel doors, al ways reinfor ce the inside of the door both vertically and horizontally with an angle ir on. A horizontal brace should be long enough to be secure ...
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Chamberlain M150 - page 21
Horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, aluminum, steel, door with glass panel, etc.). Header Wall Vertical Centerline of Garage Door Finished Ceiling Optional Placement of Door Bracket Header Bracket Door Bracket 2x4 Support For a door with no exposed framing or for the optional installation, use 5 ...
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Chamberlain M150 - page 22
Installation Step 13 Connect Door Arm to Trolley Follow instructions which apply to your door type as illustrated below and on page 23. Make sure garage door is fully closed. Pull the emergency r elease handle to disconnect the outer trolley fr om the inner trolley . Slide the outer trolley back (away fr om the door) about 2" as shown in Figur ...
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Chamberlain M150 - page 23
All ONE-PIECE Doors 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). • W ith the door closed, connect the straight door arm section to the door bracket with the 5/16"x1-1/4" clevis pin. • Secure with a ring fastener . Nuts 5/16"-18 Lo ...
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Chamberlain M150 - page 24
Adjustment Step 1 Adjust the UP and DOWN Limits Do not make any limit adjustments until the safety reversing sensors ar e 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 r everse in ...
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Chamberlain M150 - 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 amount required to close the door. Do not use the force adjustments t ...
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Chamberlain M150 - page 26
Adjustment Step 4 T est the Safety Reverse System T est • 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 M150 - page 27
The Remote Control T ransmitter The opener must learn the code of any new remote control. Page 29 explains how to program your receiver and how to erase all codes if required. Self service of your receiver and remote controls is not recommended. If service is needed, call the toll-free number listed on the back page. The T ransmitter Battery The li ...
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Chamberlain M150 - page 28
28 Activate the opener with any of the following: • The Remote Control T ransmitter . Hold push button down until the door starts to move. • The Door Control. Hold push bar down until the door starts to move. • The Outside Keylock or Keyless Entry . (See Accessories) When the opener is activated with the safety reversing sensor installed and ...
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Chamberlain M150 - 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 controls or remote controls. A moving garage door could injure or kill someone under it. Activate the opener only when you can see the door clearly, it is f ...
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Chamberlain M150 - 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 7. 3. Is there a build-up of ice or snow under the door? The door may be froz ...
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Chamberlain M150 - page 31
Having a Problem? (continued) Situation Probable Cause & Solution The door reverses for no apparent reason and opener lights don't blink: The door reverses for no apparent reason and opener lights blink for 5 seconds after reversing: 1. Is something obstructing the door? Pull the manual release handle. Operate the door manually . If it is ...
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Chamberlain M150 - page 32
8 UP CEILING MOUNT ONLY 10 12 4 NOTICE 6 5 7 11 13 14 9 2 3 LIGHT LOCK 1 1 8 4 5 2 3 7 6 Rail Assembly Parts Installation Parts 32 KEY PART NO. NO. DESCRIPTION 1 41A4795 Hardware bag (Includes sprocket coupling) 2 12B569-1 Left rail bracket 3 12B569-2 Right rail bracket 4 81C168 Rack 5 41C4677 Complete trolley assembly 6 1D4828-1 One-piece T-rail 7 ...
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Chamberlain M150 - page 33
Repair Parts 33 w ew Drive 94 DN UP Brown Wire (Down) Contact LIMIT SWITCH ASSY. Grey Wire Yellow Wire (Up) Contact Center Limit Contact Drive Gear 2 1 4 5 7 13 17 16 9 12 8 14 15 10 6 11 3 8c 8a 8b 8d Power Unit Parts KEY P ART NO. NO. DESCRIPTION 1 31D426 Drive shaft cover 2 41B4245 Line cord 3 30B363 Capacitor – 1/2 HP 4 12A373 Capacitor brack ...
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Chamberlain M150 - page 34
LOCK LIGHT 34 Accessories A vailable For Y our Opener Model 971AC Model 974AC Model 970LM Model 1702 SECURITY ✚ Single-Function Remote Control Includes visor clip. SECURITY ✚ 2-Channel Remote Control Includes visor clip. SECURITY ✚ 3-Channel Remote Control Includes visor clip. SECURITY ✚ 4-Channel Remote Control Includes visor clip. SECURIT ...
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Chamberlain M150 - page 35
Index Access Door/Outside Quick Release Accessory .........................................................................................................31, 34 Electrical Safety W arnings ......................................................................................................................................7, 18, 27 Garage Door T es ...
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Chamberlain M150 - page 36
© 1999, The Chamberlain Group, Inc. 114A2390 All Rights Reserved Printed in Mexico ACCESS MASTER SER VICE IS ON CALL OUR LARGE SERVICE ORGANIZATION SPANS AMERICA INSTALLATION AND SERVICE INFORMATION IS AS NEAR AS YOUR TELEPHONE SIX DAYS A WEEK. SIMPLY DIAL OUR TOLL FREE NUMBER: 1-800-528-2817 HOURS: (Mountain Standard Time) 6:00 A.M. TO 6:00 P.M. ...
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