Chamberlain B550C Handleiding
Chamberlain
Garagepoortopener
B550C
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Contents
Preparation ......................................2-5
Assembly .......................................6-10
Installation ..................................11-28
Install the Door Control ............21-22
Install the Protector System® ....23-26
Connect power .........................27-28
Adjustments .................................29-31
MyQ® Smartphone Control .................32
Operation .....................................33-39
Using your Garage Door Opener .....34
To Open the Door Manually ...........34
Motion Detecting
Control Panel ...........................35-36
Multi-Function Control Panel .... 37-38
Remote Control .............................38
Homelink® ...................................38
To Erase the Memory .....................39
Maintenance .....................................40
Troubleshooting ...........................41-42
Accessories ........................................43
Warranty ...........................................44
Repair Parts ................................. 45-47
Owner’s Manual
B550C • B750C • B751C
Belt Drive
Garage Door Opener
FOR RESIDENTIAL USE ONLY
PRE-PROGRAMMED REMOTE CONTROL
INCLUDED
www.chamberlain.com
www.mychamberlain.com
Smart Garage Opener
• 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 garage door opener are required to ensure
safe operation.
• The model number label is located on the left side panel of your
garage door opener.
• This garage door opener is compatible with MyQ® and
Security+ 2.0® accessories.b
• DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features are
to be used ONLY with sectional doors.

2
Safety Symbol and Signal Word Review
This garage door opener hasbeen designed and tested to offer safe service provided it isinstalled,
operated, maintained and tested in strict accordance with the instructions and warningscontained in
this manual.
Mechanical
Electrical
When you see these Safety Symbolsand Signal
Words on the following pages, theywill alert you to
the possibility of serious injury or death if you do
not complywith the warningsthat accompany
them. The hazard may come from something
mechanical or from electric shock. Read the
warnings carefully.
When you see thisSignal Word on the following
pages, it will alert you to the possibilityof damage
to your garage door and/or the garage door
opener if you do not comply with the cautionary
statements that accompany it. Read them carefully.
WARNING: This product can expose you to chemicals including lead, which are known to the
State of California to cause cancer or birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
Unattended Operation
The Timer-to-Close (TTC) feature, the MyQ®Smartphone Control app, and MyQ®Garage Door and
Gate Monitor are examplesof unattended close and are to be used ONLY with sectional doors. Any
device or feature that allows the door to close without being in the line of sight of the door is considered
unattended close. The Timer-to-Close (TTC) feature, the MyQ®Smartphone Control, and any other
MyQ®devices are to be used ONLY with sectional doors.
Check the Door
To prevent possible SERIOUSINJURYor DEATH:
lALWAYS call a trained door systems technician if garage door binds,sticks, or is out of balance.
An unbalanced garage door may NOT reverse when required.
lNEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or
their hardware, ALLof which are under EXTREME tension.
lDisable ALLlocks and remove ALLropesconnected to garage door BEFORE installation and
operating garage door opener to avoid entanglement.
lDO NOT install on a one-piece door if using devices or features providing unattended close.
Unattended devicesand features are to be used ONLY with sectional doors.
To prevent damage to garage door and opener:
lALWAYS disable locks BEFORE installing and operating the opener.
lONLY operate garage door opener at 120V, 60Hz to avoid malfunction and damage.
Before you begin:
1. Disable locks and remove any ropes connected to the garage door.
2. Lift the door halfway up. Release the door. If balanced, it should stay in
place, supported entirely by itssprings.
3. Raise and lower the door to check for binding or sticking. If your door
binds, sticks, or is out of balance, call a trained door systems
technician.
4. Check the seal on the bottom of the door. Anygap between the floor
and the bottom of the door must not exceed 1/4 inch (6 mm).
Otherwise, the safety reversal system may not work properly.
5. The opener should be installed above the center of the door. Ifthere is
a torsion spring or center bearing plate in the way of the header
bracket, it may be installed within 4feet (1.2 m) to the left or right of the
door center. See page 12.
Torsion
Spring
Extension
Spring
OR
Preparation

3
Test the Wi-Fi®Signal Strength in your garage
You will need a router with Wi-Fi and a smartphone or other mobile device. Make sure your mobile
device is connected to your Wi-Fi network. Hold your mobile device in the place where your garage
door opener will be installed and check the Wi-Fi signal strength.
Wi-Fi signal is weak.
The garage door opener will connect to your Wi-Fi likely
network. If not, try one of the options below.
No Wi-Fi signal. Try one of the following:
• Move your router closer to the garage door opener to
minimize interference from walls and other objects
• Buy a Wi-Fi range extender
• Buy a Chamberlain MyQ ® Internet Gateway (CIGBUC) see page 40
Check Signal Strength. If you see:
Wi-Fi signal is strong. You’re all set!
Install your new garage door opener.
Visit wifihelp.chamberlain.com for more details
See MyQ®Smartphone Control page 32 to connect your garage door opener to your Wi-Fi network.
Additional Items You May Need:
Survey your garage area to see if you will need anyof the following items:
l(2) 2X4 Pieces of wood : May be used to fasten the header bracket to the structural supports.
Also used to position the garage door opener during installation and for testing the safety
reversing sensors.
lSupport bracket and fastening hardware: Must be used if you have a finished ceiling in your
garage.
lExtension brackets (MODEL 041A5281-1) or wood blocks: Depending upon garage
construction, extension brackets or wood blocks may be needed to install the safety reversing
sensor.
lFastening hardware: Alternate floor mounting of the safety reversing sensor will require
hardware not provided.
lDoor reinforcement: Required if you have a lightweight steel, aluminum, fiberglassor glass
panel door.
lRail extension kit: Required ifyour garage door is more than 7 feet (2.13 m) high.
Tools Needed
3/16
7/16
1/2
5/32
5/16
5/8
9/16
1/4
7/16
Preparation

4
Carton Inventory
Save the carton and packing material until the installation and adjustment is complete. Instructionsfor
the accessories will be attached to the accessory and are not included in this manual. The images
throughout this manual are for reference only and your product may look different.
Model Power Door Control Remote Control Wireless Keypad
B550C Med Lift Power System™ Multi-Function 3-button (2) ü
B750C Plus Lift Power System™ Motion Detecting 3-button (2) ü
B751C Plus Lift Power System™ Motion Detecting 3-button (2) ü
A. Header bracket
B. Pulley
C. Door bracket
D. Curved door arm
E. Straight door arm
(Packaged inside front rail section)
F. Trolley
NOTE: Be sure to assemble the trolley before sliding onto rail.
G. Emergency release rope and handle
H. Rail (1 frontand 4 center sections)
I. Hanging brackets (2)
(Packaged inside the front rail section)
J. Garage door opener (motor unit)
K. Sprocket cover and screws
L. “U” bracket
M. Belt
N. Door control
O. Remote control
P. The Protector System®
Safety reversing sensors with 2 conductor white and white/black wire attached:Sending
Sensor (1), Receiving Sensor (1), and Safety Sensor Brackets (2)
NOT SHOWN
Wireless Keypad Owner's manual
White and red/white wire Hardware
N
A
B
C
H
K
J
OP
I
D
E
F
G
L
M
OR
Preparation

5
Hardware
ASSEMBLY INSTALLATION DOOR CONTROL
Insulated Staples
(Not Shown)
Clevis Pin 5/16"x1-1/2"
Ring
Fastener (3)
Hex Bolt 5/16"-18x7/8" (4)
Self-Threading Screw
1/4"-14x5/8" (2)
Clevis Pin 5/16"x1" Clevis Pin 5/16"x1-1/4"
Carriage Bolt
1/4"-20x1/2" (2)
Wing Nut
1/4"-20 (2)
Lag Screw 5/16"-9x1-5/8" (4)
Screw 6ABx1" (2)
Drywall Anchors (2)
Screw 6-32x1" (2)
Hex Screw #8x3/8" (3)
(packed with the
sprocket cover)
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
Bolt
Nut 3/8"
Lock Washer 3/8"
Master Link
Threaded
Shaft with
Spring
Trolley Nut
Lock Washer
5/16"-18 (4)
Nut
5/16"-18 (4)
Preparation

6
Assembly
STEP 1 Assemble the rail and install the trolley
To prevent INJURY from pinching, keep hands and fingers away from the joints while assembling the
rail.
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
The front rail has a cut out “window” at the door end. The rail tab MUST be on top of the rail when
assembled.
1. Remove the straight door arm and hanging bracket packaged inside the front rail and set
aside for Installation Step 5 and 9. NOTE: To prevent INJURY while unpacking the rail
carefully remove the straight door arm stored within the rail section.
2. Align the rail sections on a flat surface as shown and slide the tapered ends into the larger
ones. Tabs along the side will lock into place.
3. Place the motor unit on packing material to protect the cover, and restthe back end of the rail
on top. For convenience, put a support under the front end of the rail.
4. As a temporary stop, insert a screwdriver into the hole in the second rail section from the motor
unit, as shown.
5. Check to be sure there are 4 plasticwear pads inside the inner trolley. Iftheybecame loose
during shipping, checkall packing material. Snap them back into position as shown.
6. Slide the trolley assemblytoward the screwdriver as shown.
7. Slide the rail onto the “U” bracket, until it reaches all the stops on the top and sides of the “U”
bracket.
Wear Pads
Front Rail Section
(TO DOOR)
“U” Bracket
(TO MOTOR UNIT)
Trolley
Rail Tab
On Top
Slide to stops
on top and sides
of “U” bracket
Screwdriver

7
Assembly
STEP 2 Fasten the rail to the motor unit
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top of the opener.
1. Insert a 1/4"-20 x 1-3/4" bolt into the cover protection bolt hole on the back end of the rail as
shown. Tighten securely with a 1/4"-20 locknut. DO NOT overtighten.
2. Remove the bolts from the top of the motor unit.
3. Use the carton to support the front end of the rail.
4. Place the “U” bracket, flat side down onto the motor unit and align the bracket holes with the
bolt holes.
5. Fasten the “U” bracket with the previouslyremoved bolts; DO NOT use any power tools. The
use of power tools may permanently damage the garage door opener.
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
“U” Bracket
Cover Protection
Bolt Hole
Bolt
Lock Nut
Bolts (Mounted in the
garage door opener)

9
Assembly
STEP 4 Install the belt
1. Pull the belt around the idler pulley and toward the trolley.The ribbed side mustcontactthe
pulley.
2. Hook the trolley connector into the retaining slot on the trolley as shown (Figure 1).
3. With the trolley against the screwdriver, dispense the remainder of the belt along the rail
lengthtoward the motor unit and around the sprocket (Figure 2). The sprocket teeth must
engage the belt.
4. Check to make sure the belt is not twisted. Connect the trolley threaded shaftwith the master
link(Figure 3).
lPush pins of master link bar through holes in end of belt and trolley threaded shaft.
lPush master link cap over pins and past pin notches.
lSlide the closed end ofthe clip-on spring over one of the pins. Push the open end of the
clip-on spring onto the other pin.
5. Remove the spring trolley nut from the threaded shaft.
6. Insert the trolley threaded shaft through the hole in the trolley.
HARDWARE
Master Link
Figure 3
Threaded Shaft with Spring Trolley Nut
Threaded Shaft
Master Link
Sprocket
Figure 2
Figure 1 Trolley
Connector
Retaining
Slot

10
Assembly
STEP 5 Tighten the belt
1. By hand, thread the spring trolley nut on the threaded shaft until it is finger tight againstthe
trolley.Do not use anytools.Remove the screwdriver.
2. Insert a flathead screwdriver tip into one of the nut ring slots and brace it firmly against the
trolley.
3. Tighten the spring trolley nut with an adjustable wrench or a 7/16" open end wrench abouta
quarter turn until the spring releases and snaps the nut ring against the trolley.This setsthe
spring to optimum belt tension.
Spring
Trolley Nut
Nut Ring Slot
Nut RingNut Ring
AFTER
1-1/4" (3.18 cm)
BEFORE
1" (2.5 cm)
STEP 6 Install the sprocket cover
To avoid possible SERIOUS INJURY to finger from moving garage door opener:
lALWAYS keep hand clear of sprocket while operating opener.
lSecurely attach sprocket cover BEFORE operating.
1. Position the sprocket cover over the sprocket as shown and fasten to the mounting plate with
8x3/8" hex screws provided.
You have now finished assembling your garage door opener. Please read the following warnings
before proceeding to the installation section.
Hex Screw #8x3/8"
(Packed with the sprocket cover)
HARDWARE
Hex Screw
Sprocket Cover

12
Installation
STEP 1 Determine the header bracket location
To prevent possible SERIOUS INJURY or DEATH:
lHeader bracket MUST be RIGIDLY fastened to structural support on header wall or ceiling,
otherwise garage door might NOT reverse when required. DO NOT install header bracket over
drywall.
lConcrete anchors MUST be used if mounting header bracket or 2x4 into masonry.
lNEVER try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their
hardware, ALL of which are under EXTREME tension.
lALWAYS call a trained door systems technician if garage door binds, sticks, or is out of balance.
An unbalanced garage door might NOT reverse when required.
Installation procedures vary according to garage door types. Follow the instructions which apply to your
door.
1. Close the door and mark the inside vertical centerline of the garage door.
2. Extend the line onto the header wall above the door.You can fasten the header bracket within
4 feet (1.22 m) of the left or rightofthe door center only if a torsion spring or center bearing
plate is in the way; or you can attach it to the ceiling (see page 13) when clearance is minimal.
(It may be mounted on the wall upside down if necessary, to gain approximately 1/2" (1 cm). If
you need to install the header bracket on a 2x4 (on wall or ceiling), use lag screws (not
provided) to securely fasten the 2x4 to structural supports as shown here and on page 13.
3. Open your door to the highest point of travel as shown. Draw an intersecting horizontal line on
the header wall 2" (5 cm) above the high point:
l2" (5 cm) above the high point for sectional door and one-piece door with track.
l8" (20 cm) above the high point for one-piece door without track.
This height will provide travel clearance for the top edge ofthe door. NOTE: If the total number of inches
exceeds the height available in your garage, use the maximum height possible, or refer to page 13 for
ceiling installation.
Header Wall Vertical Centerline of Garage Door
2x4 Structural
Supports
Level
(Optional)
Unnished
Ceiling
2x4
OPTIONAL CEILING MOUN
FOR HEADER BRACKET
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest
Point of
Travel
Door
One-piece door with horizontal track
Header Wall
Track
2" (5 cm)
Highest
Point of
Travel
Door
One-piece door without track:
jamb hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Jamb
Hardware
One-piece door without track:
pivot hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Pivot

14
Installation
STEP 3 Attach the rail to the header bracket
1. Position the opener on the garage floor below the header bracket. Use packing material as a
protective base.
NOTE: If the door spring is in the way, you will need help. Have someone hold the opener
securely on a temporary support to allow the rail to clear the spring.
2. Position the rail bracket against the header bracket.
3. Align the bracket holes and join with a clevis pin as shown.
4. Insert a ring fastener to secure.
HARDWARE
Clevis Pin
5/16"x1-1/2" Ring Fastener
Clevis Pin
Ring Fastener
STEP 4 Position the garage door opener
To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of
door.
1. Remove the packing material and lift the garage door opener onto a ladder.
2. Fully open the door and place a 2x4 (laid flat) under the rail.For one-piece doors without
tracks,lay the 2x4 on it's side.
NOTE: A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall
enough you will need help at this point.Ifthe door hitsthe trolley when itis raised,pull the trolley
release arm down to disconnectthe inner and outer trolley.Slide the outer trolleytoward the garage
door opener. The trolley can remain disconnected until instructed.
Connected Disconnected
One-piece door
without tracks
2x4 2x4
All other
door types

15
Installation
STEP 5 Hang the garage door opener
To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to
structural supports of the garage. Concrete anchors MUST be used if installing ANY brackets into
masonry.
Hanging the garage door opener will vary depending on your garage. Below are three example
installations. Your installation may be different. For ALL installations the garage door opener MUST be
connected to structural supports. The instructions illustrate one of the examples below.
1. On finished ceilings, use the lag screws to attach a support bracket (not provided) to the
structural supports before installing the garage door opener.
2. Make sure the garage door opener is aligned with the header bracket. Measure the distance
from each side of the garage door opener to the support bracket.
3. Cut both pieces of the hanging bracket to required lengths.
4. Attach the end of each hanging bracket to the support bracket with appropriate hardware (not
provided).
5. Attach the garage door opener to the hanging bracketswith the hex bolts,lockwashers, and
nuts.
6. Remove the 2x4 and manually close the door. Ifthe door hits the rail, raise the header bracket.
Finished Ceiling
Lag Screw
12 3
Not
Provided
Not Provided
Not Provided
Hex Bolt
Nut
Lock
Washer
4 5 6
Lag Screw
Finished Ceiling
EXAMPLES
Unnished Ceiling
HARDWARE
Hex Bolt
5/16"- 18x7/8"
Nut
5/16"-18
Lock Washer
5/16"-18
Lag Screw
5/16"-9x1-5/8"

16
Installation
STEP 6 Install the light bulbs
To prevent possible OVERHEATING of the end panel or light socket:
lUse ONLY A19 incandescent (100W maximum) or compact fluorescent (26W maximum) light
bulbs.
lDO NOT use incandescent bulbs larger than 100W.
lDO NOT use compact fluorescentlight bulbs larger than 26W (100W equivalent).
lDO NOT use halogen bulbs.
lDO NOT use short neckor specialtylightbulbs.
1. Pull on the top sides of the light lens and rotate the light lens down.
2. Insertan A19 incandescent(100W maximum) or compactfluorescent(26W, 100W
equivalent) light bulb into the light socket.
3. Rotate the lens up to close.
NOTE: Do not use halogen, short neck, or specialty lightbulbs as these may overheatthe end panel or
lightsocket. Do notuse LED bulbsas theymay reduce the range or performance of your remote
controls.
or or
STEP 7 Attach the emergency release rope and handle
To prevent possible SERIOUS INJURY or DEATHfrom a falling garage door:
lIf possible, use emergencyrelease handle to disengage trolley ONLY when garage door is
CLOSED. Weak or broken springsor unbalanced door could result in an open door falling
rapidly and/or unexpectedly.
lNEVER use emergency release handle unlessgarage doorway is clear of personsand
obstructions.
lNEVER use handle to pull door open or closed. If rope knot becomesuntied, you could fall.
1. Insertone end ofthe emergency release rope through the handle. Make sure that“NOTICE”
is rightside up. Secure with an overhand knot at least 1" (2.5 cm) from the end of the rope to
preventslipping.
2. Insertthe other end of the emergency release rope through the hole in the trolleyrelease arm.
Mount the emergency release within reach,but at least6 feet (1.83 m) above floor,avoiding
contact with vehicles to preventaccidental release and secure with an overhand knot.
NOTE: Ifit is necessary to cutthe emergency release rope, seal the cutend with a match or lighter to
preventunraveling.Ensure the emergencyrelease rope and handle are above the top of all vehicles to
avoid entanglement.

17
Installation
STEP 8 Install the door bracket
Fiberglass, aluminum or lightweight steel garage doors WILL REQUIRE reinforcement BEFORE
installation of door bracket. Contact the garage door manufacturer or installing dealer for opener
reinforcement instructions or reinforcement kit. Failure to reinforce the top section as required
according to the door manufacturer may void the door warranty.
A horizontal and vertical reinforcement isneeded for lightweight garage doors (fiberglass, aluminum,
steel, doors with glass panel, etc.) (not provided). A horizontal reinforcement brace should be long
enough to be secured to two or three vertical supports. A vertical reinforcement brace should cover the
height of the top panel. Contact the garage door manufacturer or installing dealer for opener
reinforcement instructions or reinforcement kit.
NOTE: Many door reinforcement kits provide for direct attachment of the clevis pin and door arm. In this
case you will not need the door bracket; proceed to the next step.
OPTION A SECTIONAL DOORS
1. Center the door bracket on the previously marked vertical centerline used for the header
bracket installation. Note correct UP placement, as stamped inside the bracket.
2. Position the top edge of the bracket 2"-4" (5-10cm) below the top edge of the door,OR
directly below any structural support across the top of the door.
3. Mark, drill holes and install as follows, depending on your door’s construction.
Metal or light weight doors using a vertical angle iron brace between the door panel support and
the door bracket:
lDrill 3/16" fastening holes. Secure the door bracket using the two 1/4"-14x5/8" self-threading
screws. (Figure1)
lAlternately, use two 5/16"-18x2" bolts, lock washers and nuts (not provided). (Figure2)
Metal, insulated or light weight factory reinforced doors:
lDrill 3/16" fastening holes. Secure the door bracket using the self-threading screws. (Figure3)
Wood doors:
lUse top and bottom or side to side door bracket holes. Drill 5/16" holes through the door and
secure bracket with 5/16"-18x2" carriage bolts, lock washers and nuts (not provided).
(Figure4)
NOTE: The 1/4"-14x5/8" self-threading screws are not intended for use on wood doors.
FIGURE 1
FIGURE 3 FIGURE 4
FIGURE 2
Vertical
Reinforcement
Vertical
Centerline
of Garage Door
UP
Door Bracket
Vertical Reinforcement
Vertical Reinforcement
Horizontal Reinforcement
Vertical Centerline
of Garage Door
Hardware
(not provided)
Door Bracket
UP
Vertical
Centerline
of Garage Door
UP
Vertical Centerline of
Garage Door
Hardware
(not provided)
UP
Inside Edge of Door or
Reinforcement Board
Self-Threading Screw
Self-Threading
Screw
HARDWARE
Self-Threading Screw
1/4"-14x5/8"

18
Installation
STEP 8 Install the door bracket (continued)
OPTION B ONE-PIECE DOORS
1. Center the door bracket on the top of the door, in line with the header bracket as shown.
2. Mark either the left and right, or the top and bottom holes.
Metal Doors:
lDrill 3/16" pilot holes and fasten the bracket with the self-threading screws provided.
Wood Doors:
lDrill 5/16" holes and use 5/16"-18x2" carriage bolts, lock washersand nuts (not provided) or
5/16"x1-1/2" lag screws (not provided) depending on your installation needs.
NOTE: The door bracket maybe installed on the top edge of the door if required for your installation.
(Refer to the dotted line optional placement drawing.)
HARDWARE
Self-Threading Screw
1/4"-14x5/8"
For a door with no exposed
framing, or for the optional
installation, use lag screws
5/16"x1-1/2" (not provided)
to fasten the door bracket.
Vertical
Centerline
of Garage
Door
Optional
Placement
of Door
Bracket
Door Bracket
Header Bracket
Header Wall
2x4 Support (Finished Ceiling)
Door
Bracket
Top of Door
(Inside Garage)
Top Edge of
Door
Optional
Placement
Optional
Placement
Top Edge
of Door
Top of Door
(Inside Garage)
Door
Bracket
Hardware
(not provided)
Hardware
(not provided)
Metal Door Wood Door
Self-Threading Screw

20
Installation
STEP 9 Connect the door arm to the trolley (continued)
OPTION B ONE-PIECE DOORS
IMPORTANT: The groove on the straight door arm MUST face away from the curved door arm.
1. Close the door. Disconnect the trolley by pulling the emergency release handle.
2. Fasten the straight door arm and the curved door arm together to the longest possible length
(with a 2 or 3 hole overlap) using the bolts, nuts, and lock washers.
3. Attach the straight door arm to the door bracket using the clevis pin. Secure with the ring
fastener.
4. Attach the curved door arm to the trolley using the clevis pin. Secure with the ring fastener.
5. Pull the emergency release handle toward the garage door opener until the trolley release
arm is horizontal.
HARDWARE
Hex Bolt 5/16"-18x7/8"
Nut 5/16"-18
Lock Washer
5/16" -18
Clevis Pin 5/16"x1" Clevis Pin 5/16"x1-1/4"
Ring Fastener
One-Piece Door without Track
One-Piece Door with Track
Ring Fastener
Ring Fastener
Ring Fastener
Nut
Nut
Ring Fastener
Lock Washer
Lock Washer
Clevis Pin 5/16"x1-1/4"
Clevis Pin
5/16"x1-1/4"
Hex Bolts
Hex Bolts
Clevis Pin
5/16"x1"
Clevis Pin
5/16"x1"
Straight Door Arm
(Groove facing out)
Curved Door Arm

22
Installation
STEP 11 Wire the door control to the garage door opener
1. Run the white and red/white wire from the door control to the garage door opener. Attach the
wire to the wall and ceiling with the staple (not applicable for gang box or pre-wired
installations). Do not pierce the wire with the staple as this may cause a short or an open
circuit.
2. Strip 7/16 inch (11 mm) of insulation from the end of the wire near the garage door opener.
3. Connect the wire to the red and white terminals on the garage door opener. If your garage is
pre-wired make sure you use the same wires that are connected to the door control. To insert
or release wires from the terminal, push in the tab with screwdriver tip.
RED
WHITE
WHITE
GREY
7/16" (11 mm)
2
3
1
HARDWARE
Insulated Staple (Not Shown)
Staple
STEP 12 Attach the warning labels
1. Attach the entrapment warning label on the wall near the door control with tacks or staples.
2. Attach the manual release/safety reverse test label in a visible location on the inside of the
garage door.

23
Installation
STEP 13 Install the Protector System®
Be sure power is NOT connected to the garage door opener BEFORE installing the safety reversing
sensor.
To preventSERIOUS INJURY or DEATH from closing garage door:
lCorrectlyconnect and align the safety reversing sensor. This required safety device MUST NOT
be disabled.
lInstall the safety reversing sensor so beam is NO HIGHER than 6" (15 cm) above garage floor.
IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSORS
The safety reversing sensors must be connected and aligned correctly before the garage door
opener will move in the down direction.
The sending sensor (with an amber LED) transmits an invisible light beam to the receiving sensor (with
a green LED). If an obstruction breaksthe light beam while the door is closing, the door will stop and
reverse to the full open position, and the garage door opener lights will flash 10 times.
NOTE: For energy efficiencythe garage door opener will enter sleep mode when the door is fully
closed. The sleep mode shuts the garage door opener down until activated. The sleep mode is
sequenced with the garage door opener light bulb; as the light bulb turns off the sensor LEDs will turn
off and whenever the garage door opener lights turn on the sensor LEDs will light. The garage door
opener will not go into the sleep mode until the garage door opener has completed 5 cyclesupon
power up.
When installing the safety reversing sensors check the following:
lSensors are installed inside the garage, one on either side of the door.
lSensors are facing each other with the lenses aligned and the receiving sensor lens does not
receive direct sunlight.
lSensors are no more than 6 inches (15 cm) above the floor and the light beam is
unobstructed.
Safety Reversing Sensor
6" (15 cm) max. above floor
Invisible Light Beam
Protection Area
Facing the door from inside the garage
Carriage Bolt
1/4"-20 x 1/2"
Wing Nut
1/4"-20
HARDWARE
The safety reversing sensors can be attached to the door track, the wall, or the floor. The sensorsshould
be no more than 6 inches(15 cm) above the floor. If the door track will not support the sensor bracket a
wall installation is recommended. Choose one of the following installations.
OPTION A DOOR TRACK INSTALLATION
1. Slide the curved arms of the sensor bracket around the edge of the door track. Snap into
place so that the sensor bracket is flush against the track.
2. Slide the carriage bolt into the slot on each sensor.
3. Insert the bolt through the hole in the sensor bracket and attach with the wing nut. The lenses
on both sensors should point toward each other. Make sure the lens is notobstructed by the
sensor bracket.
No more
than 6 inches
(15 cm)
Carriage Bolt
Wing Nut
1
2 3

26
Installation
STEP 14 Wire the Safety Reversing Sensors (continued)
OPTION B PRE-WIRED INSTALLATION
1. Cut the end of the safety reversing sensor wire, making sure there is enough wire to reach the
pre-installed wires from the wall.
2. Separate the safety reversing sensor wires and strip 7/16 inch (11 mm) of insulation from each
end. Choose two of the pre-installed wires and strip 7/16 inch (11 mm) of insulation from each
end. Make sure that you choose the same color pre-installed wires for each sensor.
3. Connect the pre-installed wires to the sensor wires with wire nuts making sure the colors
correspond for each sensor. For example, the white wire would connect to the yellow wire and
the white/blackwire would connect to the purple wire.
4. At the garage door opener, strip 7/16 inch (11 mm) of insulation from each end of the wires
previously chosen for the safety reversing sensors. Twist the like-colored wires together.
5. Insert the wires connected to the white safety sensor wires to the white terminal on the garage
door opener. Insert the wires that are connected to the white/black safetysensor wires to the
grey terminal on the garage door opener.
Safety reversing
sensor wires
Pre-installed
wires
White
White/Black
Yellow (for example)
Purple (for example)
Wire nuts (not provided)
Pre-installed wires
Safety reversing
sensor wires
1
3
4
7/16" (11 mm)
2
Purple
Yellow
5
7/16" (11 mm)
Yellow
Purple
To insert or remove the wires from the terminal,
push in the tab with a screwdriver tip.
Product specificaties
Merk: | Chamberlain |
Categorie: | Garagepoortopener |
Model: | B550C |
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