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 carefully!
■ Fasten the manual near the garage door after installation.
■ The door WILL NOT CLOSE unless the Protector System
®
is connected and properly
aligned.
■ Periodic checks of the opener are required to ensure safe operation.
■ The model number label is located on the back of your opener.
Start by reviewing these important safety alert symbols:
2
Safety alert symbol review ...........................................2
Safety information and precautions..............................3
Testing your garage door for binding & balance ..........3
Hardware supplied........................................................3
Carton inventory ...........................................................4
Illustration of sectional door installation .....................5
Illustration of one-piece door installation.....................5
Assembly section - pages 6 – 7
Fasten rail to power unit .............................................6
Install the trolley.........................................................6
Attach the rail brackets ...............................................7
Installation safety instructions ....................................7
Installation section - pages 8 – 23
Determine the header bracket location
Sectional door ...........................................................8
One-piece door..........................................................9
Install the header bracket..........................................10
Attach the rail to the header bracket .........................11
The Protector System
®
.............................................12
Install the safety reversing sensor.............................13
Position the opener....................................................15
Hang the opener........................................................16
Install the door control and connect all wires...........17
Electrical requirements .............................................18
Complete the safety reversing sensor installation.....18
Install the lights and lens ..........................................19
Attach the manual release rope and handle...............19
Fasten the door bracket (sectional door)...................20
Fasten the door bracket (one-piece door)..................21
Connect door arm to trolley (sectional door)............22
Connect door arm to trolley (one-piece door)...........23
Adjustment section - pages 24 – 26
Travel limit adjustments............................................24
Force adjustments .....................................................25
Test the Protector System
®
........................................26
Test the safety reverse system ..................................26
Operation safety instructions ......................................27
Care of your opener ....................................................27
Maintenance schedule.................................................27
Operation of your opener............................................28
Receiver & remote control programming...................29
Having a problem?......................................................30
Repair parts, rail assembly..........................................32
Repair parts, installation .............................................32
Repair parts, power unit..............................................33
Accessories .................................................................34
Index ...........................................................................35
How to order repair parts............................................36
Warranty......................................................................36
When you see these Safety Symbols on the following pages, they will alert you to the possibility of serious injury
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 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.
This garage door opener is designed and tested to offer safe service provided it is installed, operated, maintained
and tested in strict accordance with the safety instructions contained in this manual.
Mechanical Electrical
Contents
WARNING
WARNING
CAUTIONCAUTION
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 injury or
death.
Do not try to loosen, move or adjust them
yourself!
Ropes left on a garage door could cause someone to
become entangled and killed.
Remove all ropes
connected to the door before installing and operating the
opener.
To avoid damage to the garage door and opener, disable
locks before installing and operating the opener. Use a
wood screw or nail to hold locks in the "open" (unlocked)
position.
Operation at other than 120V 60 Hz will cause opener
malfunction and damage.
Identify the type and height of your door, any special
conditions that exist, and any additional materials that
may be required.
Test Your Door for Balance
Before you begin, complete the following test to make
sure your door is balanced, and is not sticking or
binding:
• Lift the door about halfway as shown. Release the door.
It should stay in place, supported entirely by its springs.
• Raise and lower the door to see if there is any binding
or sticking.
Sectional
Door
One-Piece
Door
Safety Information and Precautions
Safety Reversing Sensor
Installation
Lag Screw #14-10 x 1-1/2" HH (4)
Hex Screw 1/4-20 x 1-1/2" (2)
Carriage Bolts 1/4" - 20 x 1/2" (4)
Screw #10 - 32 x 3/8" (4)
Lock Nut 1/4" - 20 (4)
Lock Nut #10 x 32 (4)
Wing Nut (2)
Insulated Staples (20)
Rail Assembly
Coupling Sleeve (1)
Hex Screw 1/4"-20 x 5/8" (4)
Nut 1/4" - 20 (4)
Opener Installation
Hex Screw 5/16"-18 x 7/8" (4)
Lag Screw 5/16"-9 x 1-5/8" (2)
Lag Screw 5/16"-18 x 1-7/8" (2)
Carriage Bolt 5/16"-18 x 2-1/2" (2)
Clevis Pin 5/16" x 2-3/4" (1)
Clevis Pin 5/16" x 1-1/4" (1)
Clevis Pin 5/16" x 1" (1)
Nut 5/16" - 18 (6)
Lock Washer 5/16" (6)
Screw 6AB x 1-1/4" (2)
Insulated Staples (10)
Ring Fastener (3)
Handle
Dry Wall Anchors (2)
Rope
Hardware Supplied
WARNING
SECTIONAL DOOR
CAUTIONCAUTION
ONE-PIECE DOOR
4
Your garage door opener is packaged in two cartons which contain the power unit and parts illustrated below.
Accessories will depend on model purchased. If anything is missing, carefully check the packing material. Parts may be
"stuck" in the foam. KEEP THE FOAM INTACT (see page 6). Hardware is listed on page 3.
Carton Inventory
LOCK
LIGHT
Sprocket Coupling
Remote Control
Multi-Function
Door Control Panel
2-Conductor Bell Wire
White & White/Red
SECURITY✚
3-Channel Remote Control
Light Lens
Transmitter Visor Clip
Trolley
Rail Brackets
Safety Reversing Sensor
Mounting Bracket
With Square Holes (2)
CEILING MOUNT ONLY
UP
Header Bracket
Rail
Assembly
Door Bracket
"C" Wrap (2)
Straight Door
Arm Section
Curved Door
Arm Section
Safety Reversing Sensor
Mounting Bracket
With Slot (2)
Safety Labels
and
Literature
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with
2-Conductor White & White/Black Bell Wire
attached
You may find it helpful to refer back to this page as you proceed with the installation of your opener.
Before you begin, survey your garage area to see whether any of the conditions below apply to
your installation.
SECTIONAL Door or
ONE-PIECE Door with Track Installation
ONE-PIECE Door Without Track Installation
5
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 20 for details.
Header Wall
— — — — — — — —
Door Center
Torsion Spring
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 13.
Extension Spring
OR
One-Piece Door-Extension Spring
OR
Header
Wall
Access Door
Floor must be level
across width of door
Safety Reversing Sensor
Header
Wall
Door
Track
Safety
Reversing
Sensor
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13.
Access Door
Safety
Reversing
Sensor
Gap between floor and bottom of
Safety Reversing Sensor
door must not exceed 1/4".
ASSEMBLY STEP 1
Fasten the Rail To 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"
ASSEMBLY STEP 2
Install the Trolley
As illustrated above, slide the trolley onto and along the
bottom of the rail until it snaps firmly in place. Be certain
to install it facing correctly: the trolley release arm must
be horizontal (lock position), with its arrow pointed
away from the power unit.
Assembly Section: Pages 6 - 7
Hardware Shown Actual Size
• Working on a level surface, align the rail assembly with
the power unit, as shown.
• Slip the coupling over the rail sprocket.
• Slide the rail through the power unit bracket until the
coupling fits securely over the power unit sprocket.
• Align the two screw holes in the rail with those in the
power unit bracket. Insert two 1/4"-20x5/8" hex screws
and lock nuts. Tighten securely with a 7/16" socket
wrench.
NOTE: To aid in assembly and installation, replace
the foam packing around the power unit. Remove it
after Installation Step 5.
1/4" - 20 x 5/8"
Hex Screw
1/4" - 20
Lock Nut
ASSEMBLY STEP 3
Attach the Rail Brackets
7
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
1. READ AND FOLLOW ALL INSTALLATION 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. Repairs to cables, spring assemblies and other
hardware must be made by a professional service person before installing opener.
3. Disable all locks and remove all ropes connected to the garage door before installing the opener. Ropes
connected to a garage door can cause entanglement and death.
4. If possible, install door opener 7 feet or more above floor with the manual release handle mounted 6
feet above the floor.
5. Do not connect the opener to power source until instructed to do so.
6. 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.
7. Install the User Safety Instruction Label on the wall adjacent to the control button and the
Maintenance Instruction Label in a prominent location on the inside of the garage door.
8. Upon completion of the installation, the door must reverse when it comes in contact with a one-inch
high object or a 2x4 laid flat on the floor.
9. Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or loose
clothing can be caught in the mechanism of the garage door or the opener.
• Align rail brackets to end of rail assembly, as shown.
• Insert two 1/4"-20 x 5/8" hex screws and lock nuts.
Tighten securely with a 7/16" socket.
You have now finished assembling your garage door opener. Please read the following warnings
before proceeding to the installation section:
Hardware Shown Actual Size
1/4" - 20 x 5/8"
Hex Screw
1/4" - 20
Lock Nut
1/4"-20x5/8
Hex
Screws
Rail
Brackets
Rail
1/4"-20
Lock Nuts
WARNING
WARNING
• Open your door to the highest point
of travel as shown. Draw an intersecting horizontal line on the header
wall 3" above the high point. This
height will provide travel clearance
for the top edge of the door.
8
Proceed to Step 2, page 10.
SECTIONAL Door or
ONE PIECE Door with Track
• Close the door and mark the inside
vertical centerline of the garage door.
• Extend the line onto the header wall
above the door.
Remember, you can fasten the header
bracket within 2 feet of the left or right
of the door center only if a torsion
spring or center bearing plate is in the
way; or you can attach it to the ceiling
(refer to page 10) when clearance is
minimal. (It may be mounted on the
wall upside down if necessary, to gain
approximately 1/2".)
If you need to install the header bracket on
a 2x4 (on wall or ceiling), use lag screws
(not supplied) to securely fasten the 2x4 to
structural supports as shown here and on
page 9.
Installation Section: Pages 8 – 23
Sectional door
with curved track
One-piece door
with horizontal track
Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to garage
door types. Follow the instructions which apply to
your door.
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
26).
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. Serious
personal injury or death could result.
Call for
professional garage door service.
Finished
Ceiling
2x4
Header
Wall
Vertical
Guideline
Vertical
Guideline
Structural
Supports
WARNING
Ceiling
Header
Wall
3"
Highest Point
of Travel
Door
Track
Header
Wall
3"
Highest Point
Door
Track
of Travel
• 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 10.
• If you need to install the header
bracket on a 2x4 (on wall or
ceiling), use lag screws (not
supplied) to securely fasten the 2x4
to structural supports as shown.
EXAMPLE
Distance from top of door
(at highest point of travel) to floor................................92"
Actual height of door...................................................-88"
Remainder.......................................................................4"
Add...............................................................................+8"
Bracket height on header wall....................................=12"
(Measure UP from top of CLOSED door.)
Proceed to Step 2, page 10.
9
ONE-PIECE Door Without Track
• Open your door to the highest point of travel as shown.
Measure the distance from the top of the door to the
floor. Subtract the actual height of the door. Add 8" to
the remainder. (See Example).
• Close the door and draw an intersecting horizontal line
on the header wall at the determined height.
If the total number of inches exceeds the height
available in your garage, use the maximum height
possible, or refer to page 10 for ceiling installation.
One-piece door without track
pivot hardware
One-piece door without track
jamb hardware
Read the Safety Instructions on page 8. They also apply to doors without tracks.
Header Wall
Highest Point
of Travel
Header Wall
Vertical
Centerline
Garage Door
2x4
Vertical
Centerline of
Header
Wall
Unfinished
Ceiling
Structural Supports
2x4
Header Support
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
Highest Point
of Travel
Door
Jamb
Hardware
Distance
Floor
Door
Distance
Pivot
Floor
10
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.
Fastening 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).
• Mark either set of bracket holes (do not use the holes
designated for ceiling mount). Drill 3/16" pilot holes
and fasten the bracket securely to a structural support
with the hardware provided.
• Extend the vertical guideline onto the ceiling as shown.
• Center the bracket on the vertical mark, no more than 6"
from the wall. Make sure the arrow is pointing toward
the wall. The bracket can be mounted flush against the
ceiling when clearance is minimal.
• Mark holes designated for ceiling mount only. Drill
3/16" pilot holes and fasten bracket securely to a
structural support with the hardware provided.
Fastening the Header Bracket to the Ceiling
Installation Step 2
Install the Header Bracket
Hardware Shown Actual Size
Wall
Mounting Holes
CEILING MOUNT ONLY
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
Vertical
Center
Line
Lag Screws
5/16"x9x1-5/8"
Door
Spring
2x4
Structural
Support
Optional
Wall Mounting
Holes
Header
Wall
UP
Header
Bracket
CEILING MOUNT ONLY
UP
Ceiling Mounting Holes
CEILING MOUNT ONLY
UP
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
– Finished Ceiling –
Vertical
Center Line
Header
Bracket
6"
Maximum
Door
Spring
UP
Lag Screws
5/16"x9x1-5/8"
Highest
Point of Travel
(of Garage Door)
Garage
Door
Vertical
Center
Line
Garage
Lag Screw
5/16"-9 x 1-5/8"
Door
Vertical
Center Line
Header
Wall
• 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 rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin as
shown.
• Insert a ring fastener to secure.
11
Installation Step 3
Attach the Rail to the Header Bracket
Hardware Shown Actual Size
Header Wall
Header Bracket
Rail Bracket
Garage
Door
Ring Fastener
Header Bracket
Rail
Clevis Pin
5/16"x2-3/4 "
Rail
Bracket
Rail
Foam Packaging
Opener Carton or
Temporary
Support
Clevis Pin
5/16" x 2-3/4"
Ring Fastener
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