For Light Duty Commercial Use
Install On High-Lift and Vertical
Sectional Doors With
Torsion Assemblies Only
NOT FOR RESIDENTIAL USE
Light-Duty Dock Door Operator
for Sectional Doors
Model DDO8900W
LiftMaster
300 Windsor Drive
Oak Brook, IL 60523
• Please read this manual and the enclosed safety materials carefully!
• The door WILL NOT CLOSE unless the Protector System
®
and cable tension monitor
are connected and properly aligned.
• Periodic checks of the operator are required to ensure safe operation.
• The model number is located on the front cover of the operator.
• DO NOT exceed 10 complete cycles of door operation per hour.
This product is to be installed and serviced by a trained door systems technician only.
This product may require adjustments to door springs and/or track configurations. This
product is not intended for use on low headroom tracks with outside pickup drum or
doors utilizing extension springs.
2 YEAR WARRANTY
After Installation, Please Leave with Customer
Register your door operator to receive updates and offers from LiftMaster
Take a photo of the
camera icon including
the points (
).
Send it in by texting
the photo to 71403
(US) or visit
www.liftmaster.photo
(Global)
SM
2
Introduction
When you see these Safety Symbols and Signal Words on the following pages, they
will alert you to the possibility of serious injury or death if you do not comply with the
warnings that accompany them. The hazard may come from something mechanical or
from electric shock. Read the warnings carefully.
When you see this Signal Word on the following pages, it will alert you to the possibility
of damage to your door and/or the door operator if you do not comply with the cautionary
statements that accompany it. Read them carefully.
Mechanical
Electrical
Safety Symbol and Signal Word Review
This door operator has been designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict
accordance with the instructions and warnings contained in this manual.
Table of Contents
Introduction 2
Safety Symbol and Signal Word Review ...2
Planning
....................................................3
Preparing Your Door
.................................4
Tools Needed
............................................4
Carton Inventory
.......................................5
Hardware
..................................................5
Additional Items You May Need
................5
Terminal Block Wiring Layout
...................5
Assembly 6
Attach the Collar to the Door Operator ......6
Attach Mounting Bracket to
Door Operator
...........................................7
Installation 7
Position and Mount the Door Operator .....8
Attach the Emergency release
...................9
Install the Automatic Door
Lock (Not Provided)
..................................9
Attach the Cable Tension Monitor
(Required)
...............................................10
Install the Three Button
Control Station
........................................11
Install the Protector System
....................12
Install the Light Curtain (Not Provided)
...15
Connect Power
........................................16
Install the Battery
Backup (Not Provided)
............................18
Install the LMi5
.......................................19
Adjustments 20
Program the Travel .................................20
Test the Safety Reversal System
.............21
Test the Protector System
.......................21
Test Cable Tension Monitor
....................22
Test Automatic Door Lock
.......................22
To Open the Door Manually
....................22
Operation 23
Using Your Door Operator ......................24
Programming 25
Remote Control (Not Provided) ...............25
To Erase the Memory
..............................25
Activating Timer-To-Close (TTC)
.............26
Maintenance 26
Care of Your Door Operator ....................26
Troubleshooting 27
Diagnostic Chart .....................................27
Additional Troubleshooting
.....................28
Repair Parts 30
Installation Parts .....................................30
Door Operator Parts
................................30
Accessories 31
Contact Information 31
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.
3
Planning
Survey your area to see if any of the conditions below apply to your installation.
Depending on your requirements, additional materials may be required.
THIS DOOR OPERATOR IS COMPATIBLE WITH:
• Doors that use a torsion bar and springs. The torsion bar must be 1" (2.5 cm)
diameter. NOT compatible with reverse wound drums.
• 4-6" (10-15 cm) drums and tapered drums up to 11" (28 cm) (high and vertical lift).
• High lift (up to 54" (137.2 cm) high) and full vertical lift sectional doors up to 14 ft.
(4.3 m) high.
• Doors up to 18 ft. (5.5 m) wide.
• Doors up to 180 sq. ft. (16.7 sq. m).
• Doors up to 300lb (136.1 kg)
NOTE: The optional battery is recommended for doors from 250lbs to 300lbs
to achieve best performance.
Review or inspect proposed installation area. The door operator can be installed on the left
or right side of door. Select the side that
meets the requirements listed below.
a. Must have minimum of 2.5" (6.4 cm)
between the wall and the center of the
torsion bar.
b. Must have minimum of 3" (7.6 cm)
between the ceiling and the center of
torsion bar.
c. Must have minimum of 8.5" (21.6cm)
between the side wall (or obstruction)
and the end of torsion bar.
d. The torsion bar must extend at least
1.5" (3.81 cm) past the bearing.
This may vary depending on your
installation requirements.
e. An electric outlet is required within
6ft. (1.83 m) of the installation area.
If outlet does not exist, contact a
qualified electrician.
f. Depending upon building
construction, operator mounting
brackets, extension brackets or wood
blocks may be needed to install safety
reversing sensors and cable tension
monitor.
g. If the torsion bar is out of round, or
if the normal mounting location is
obstructed, an alternative mounting
kit (480LM) may be used (not
included).
h. Alternate floor mounting of the
safety reversing sensors will require
additional hardware (not provided).
i. Check the seal on the bottom of the
door. Any gap 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.
Introduction
NOTE: Inspect the torsion bar while the
door is raised and lowered. It is important
that there is no noticeable movement up
and down or left and right. If the movement
is not corrected, the life of the door
operator will be greatly reduced.
a
b
h
c
d
e
f
g
Torsion
bar
2.5"
(6.4 cm)
3"
(7.6 cm)
Wall or
obstruction
Torsion bar
8.5"
(21.6cm)
Safety
reversing
sensor
Smart LED Light
(Not provided)
Automatic
door lock
(Not
provided)
Door spring
4
Introduction
Preparing Your Door
BEFORE YOU BEGIN:
• Disable locks.
• Remove any ropes connected to the
door.
Complete the following test to make sure
the door is balanced and is not sticking or
binding:
1. Lift the door halfway up. Release
the door. If balanced, it should stay
in place, supported entirely by its
springs.
2. Raise and lower the door to check for
binding or sticking.
3. Door should NOT open or fall rapidly.
If your door binds, sticks, or is out of
balance, call a trained door systems
technician.
To prevent damage to door and operator:
• ALWAYS disable locks BEFORE installing and operating the operator.
• ONLY operate door operator at 120V, 60Hz to avoid malfunction and damage.
• DO NOT exceed 10 complete cycles of door operation per hour.
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician if door binds, sticks, or is out of
balance. An unbalanced door may NOT reverse when required.
• NEVER try to loosen, move or adjust door, door springs, cables, pulleys, brackets
or their hardware, ALL of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to door BEFORE installing
and operating door operator to avoid entanglement.
Tools Needed
During assembly, installation and adjustment of the door operator, instructions will call for hand tools as illustrated below.
Sectional Door
SPECIFICATIONS
Volts ............................................120 Vac - 60 Hz, ONLY
Current
....................................................2.0 AMPS
Light Duty Commercial Use Rated Load
............................. 10 Nm
LED Light (Not Provided) Current
................................0.2 AMPS
Pliers
Wire Cutters
Claw Hammer
Screwdriver
Adjustable End Wrench
1/4", 5/16", and 3/8" Sockets
and Wrench with 6" Extension
Drill
Tape Measure
Stepladder
Pencil
Needle Nose Pliers
5/32", 3/16", 5/16"
and 3/4" Drill Bits
Torque Meter
(not shown)
Level
5
Carton Inventory
Introduction
Door Operator
Cable Tension Monitor
with 2-Conductor
Green/White Bell Wires
Mounting
Bracket
Collar with
Set Screws
LMi5 Dock Door
Operator Interface
Accessory
Safety Reversing
Sensor Bracket (2)
Emergency Release
Sash Chain and
S-hooks (2)
The Protector System (2) Safety
Reversing Sensors (1 Sending
Sensor and 1 Receiving Sensor)
with 2-Conductor White and
White/Black Bell Wire attached
Safety Labels
and Literature
Hardware
Your door operator is packaged in one carton which contains the motor unit and the parts illustrated below. If anything is missing,
carefully check the packing material.
Three Button
Control Station
Screw #10-32 (2)
Screw 14-10x2" (4)
Screw 1/4"-20x1/2" (2)
Carriage Bolt 1/4"-20x1/2" (2)
Wing Nut 1/4"-20 (2)
Additional Items You May Need
Extension brackets (Model 041A5281-1)
or wood blocks: Depending upon building
construction, extension brackets or wood
blocks may be needed to install the safety
reversing sensor.
Fastening hardware: Alternate floor
mounting of the safety reversing sensor
will require hardware that is not provided.
1/2" Cable Gland/Fittings for LMI5 (2):
May be required for LMI5 accessory
installation
Wire (14-24AWG, Solid recommended):
Wiring LMI5 accessory to DDO8900W as
well as additional sensor accessories.
90˚ connector for cable conduit or flex
cable adapter: Required for permanent
wiring.
Battery Backup (Model 485LM): The unit
is battery backup compatible (battery not
included). The battery can provide additional
power during normal operation and backup
power when the main power is out.
Automatic door lock (Model 841LM): The
automatic door lock is used to prevent the
door from being manually opened once the
door is fully closed.
Smart LED Light (827LM): A wireless light
that can program to the door operator or a
remote control.
NOT SHOWN
Quick User Guide
114A5055
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Horn Strobe (12-30VDC)
Three-button Control Station Open
Close
Common
Stop
Single-button
Control
Station
LMi5 CMD
Safety Sensor Cable Tension Monitor
Cable Tension MonitorSafety Sensor
Interlock or Jumper
(max. 2 supported)
Terminal Block Wiring Layout
NOTE: If you are not installing a three
button control station, please refer to the
important note on page 11.
6
Set
Screws
Collar
Motor
Shaft
To avoid installation difficulties, do not run the door operator until instructed to
doso.
The door operator can be installed on either side of the door (see Planning section
page3). The illustrations shown are for installation on the left side.
1. Loosen the set screws.
2. Attach collar to the door operator motor shaft. The side of the collar with the larger
hole should be placed on the motor shaft. Ensure that the collar is seated all the way
on motor shaft until stop is reached.
3. Position the collar so the screws are facing out and are accessible when attached to
the torsion bar.
4. Securely tighten the 2 square head set screws closest to the motor shaft by turning
the screws 1/4 - 1/2 turn after making contact with the motor shaft.
Attach the Collar to the Door Operator
Assembly
1
To prevent possible SERIOUS INJURY
or DEATH, the collar MUST be properly
tightened. The door may NOT reverse
correctly or limits may be lost due to
collar slip.
7
Installation
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY
or DEATH:
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. Install door operator ONLY on properly balanced and
lubricated door. An improperly balanced door may
NOT reverse when required and could result in SEVERE
INJURY or DEATH.
3. ALL repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician BEFORE installing operator.
4. Disable ALL locks and remove ALL ropes connected to
door BEFORE installing operator to avoid entanglement.
5. Install the door operator at least 8 ft (2.44m) or more
above the floor. If the operator must be installed less
than 8 ft (2.44m) above the floor, then exposed moving
parts must be protected by covers or guarding, provided
by the operator manufacturer.
6. Mount the emergency release within reach, but at least
6feet (1.83 m) above the floor and avoiding contact
with vehicles to avoid accidental release.
7. NEVER connect door operator to power source until
instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing operator. They could be caught in
door or operator mechanisms.
9. Install wall-mounted door control:
• within sight of the door.
• out of reach of children at a minimum height of 5 feet
(1.5 m) above floors, landings, steps or any other
adjacent walking surface.
• away from ALL moving parts of the door.
10. Install the Emergency Release Marking. Attach the
marking on or next to the emergency release. Install the
Entrapment Warning Placard next to the door control in
a prominent location.
11. Place emergency release/safety reverse test label in plain
view on inside of door.
Attach Mounting Bracket to Door Operator
2
1. Loosely attach slotted side of mounting bracket to the same side of the door
operator as the collar, using screws provided.
NOTE: Do not tighten screws until instructed.
2. It may be necessary to add additional material behind the operator to properly
secure the mounting bracket when mounting the DDO8900W on larger drums.
Socket Wrench
Assembly
HARDWARE
Screw
#10-32 (2)
8
Set screws
(Torsion bar)
Bearing
Plate
Shaft
Collar
Torsion Bar
.25" (.6 cm) min.
space between
bearing and
shaft collar
Mounting Bracket
Screws 14-10 x 2"
Installation
HARDWARE
Position and Mount the Door Operator
1
NOTE: For additional mounting options refer to the accessories page.
1. Close the door completely.
2. Slide the door operator onto the end of the torsion bar. If the torsion bar is too long
or damaged, you may need to cut the torsion bar.
Ensure the collar does NOT touch the bearing.
3. Use a level to position and vertically align the door operator. Verify the mounting
bracket is located on a solid surface such as wood, concrete or door/flag bracket. If
installing on drywall, the mounting bracket MUST be attached to a stud.
4. When the door operator is properly aligned, mark the mounting bracket holes. If
necessary, tighten collar screws on the torsion bar to hold door operator in place
while marking holes.
NOTE: The door operator does not have to be flush to wall.
5. Remove the door operator from torsion bar. Drill 3/16" pilot holes at the marked
locations. Drill through metal door rail plates if necessary.
6. Slide the door operator back onto the torsion bar until pilot holes align with bracket.
7. Tighten the 2 square head set screws on the torsion bar. For a hollow torsion bar,
tighten screws 3/4 - 1 full turn after making contact with the bar. For a solid shaft
torsion bar, tighten screws 1/4 - no more than 1/2 turn after making contact with
the shaft. If installing on a keyed torsion bar, DO NOT tighten the screws into the
keyway.
8. Secure the mounting bracket to the wall and to the door operator. Use the 14-10x2"
screws to secure the mounting bracket to the wall.
To prevent possible SERIOUS INJURY
or DEATH:
• Concrete anchors MUST be used if
mounting bracket into masonry.
• NEVER try to loosen, move or
adjust door, springs, cables,
pulleys, brackets or their hardware,
ALL of which are under EXTREME
tension.
• ALWAYS call a trained door
systems technician if door binds,
sticks or is out of balance. An
unbalanced door might NOT
reverse when required.
• Operator MUST be mounted at a
right angle to the torsion bar to
avoid premature wear on the collar.
Screw
14-10 x 2" (2)
9
33 feet (10.05 m)
max.
3" (7.6 cm)
Door Track
Roller
Lock
Template
Attach the Emergency Release
Install the Automatic Door Lock (Not Provided)
2
3
1. Attach the sash chain to the emergency release cable, using an S-hook. Mount the
sash chain within reach, but at least 6 feet (1.83 m) above floor, avoiding contact
with vehicles to prevent accidental release.
NOTE: Older model 24 V door locks are
incompatible.
1. The lock has a 33' (10 m) cord and
may be mounted on either side of the
door. The third roller from the bottom
is ideal for most installations.
2. Ensure rail surface is clean and attach
the lock template to the track so that
the bolt hole is approximately 3"
(7.6cm) from the center of a door
roller.
3. Drill holes as marked on the template.
4. Fasten automatic door lock to
the outside of the door track with
hardware provided.
5. Run bell wire up wall to door
operator. Use insulated staples to
secure wire in several places. Insert
wire through the bottom of the door
operator.
6. Plug the connector into either plug in
the door operator.
A secondary door lock can be installed on
the opposite side of the door following the
instructions above.
Installation
The automatic door lock (model 841LM) is used to prevent the door from being
manually opened once the door is fully closed, see Accessories page 31.
Door Operator
Emergency
Release Cable
S-hook
Sash Chain
To prevent possible SERIOUS INJURY
or DEATH from a falling door:
• If possible, use emergency release
to disengage door ONLY when door
is CLOSED. Weak or broken springs
or unbalanced door could result in
an open door falling rapidly and/or
unexpectedly.
• NEVER use emergency release unless
doorway is clear of persons and
obstructions.
HARDWARE
Screw
1/4"-20x1/2" (2)
HARDWARE
1
2
3
4
5
6
Sash Chain
S-hooks (2)
10
HARDWARE
Attach the Cable Tension Monitor (Required)
4
NOTE: The cable tension monitor is shipped for left side installation. It is recommended
that the cable tension monitor be installed on the same side of the door as the door
operator. For right side installation, remove the snap-ring holding the roller in place and
reassemble it on the opposite side of the cable tension monitor.
1. Make sure the door cable is approximately 3/4" (19 mm) from the mounting surface.
Door adjustments or shimming may be required to achieve proper depth for the door
cable.
2. Position the cable tension monitor no more than 6' (2 m) above the door opening,
and be sure the roller extends 1/8"-1/4" past the cable. Make sure cable tension
monitor is located over a wood support member and the roller is free from any
obstructions.
NOTE: There must be no obstructions in the installation area that prevent the cable
tension monitor from closing completely when slack is detected.
3. Mark and drill 3/16" pilot holes for screws (pilot holes are not required for anchors).
4. Attach the cable tension monitor to the wall using the hardware provided. Make sure
that the roller is on top of the cable.
5. Run bell wire to door operator. Use insulated staples to secure wire.
6. Connect bell wire to the green quick-connect terminals on the door operator (polarity
is not important).
NOTE: Cable must have tension through entire door travel. Make sure there is no
slack in cable on opposite side of door during normal operation. If slack occurs
during door travel, adjust cables as required.
A second cable tension monitor may be installed for additional security. When two cable
tension monitors are installed, the door will not move in the down direction or will reverse
if one of the monitors detects slack or is disconnected.
If one of the cable tension monitors is removed, unplug both monitors from the operator.
Then plug in the monitor you wish to use and unplug and plug in the operator three times
to relearn the monitor to the operator.
1413121110987654
Drum
Cable
To insert or
release wire,
push in tab with
screwdriver tip
(To cable tension monitor)
(To door operator)
WHT/
GRN
Wall
Approx. 3/4"
(19 mm)
Approx. 2.5"
(63.5mm)
IMPORTANT:
Roller must be
placed no more
than 6' (2 m)
above door
opening
Cable
Tension
Monitor
Cable Tension
Monitor Roller
1/8"-1/4"
(3-6 mm)
Installation
The cable tension monitor MUST be
connected and properly installed before
the door operator will move in the down
direction.
The cable tension monitor detects ANY
slack that may occur in the cables and
will reverse the door, eliminating service
calls.
Door Closed Door Open
Screws
#8-32x1" (2)
Drum
Drum
Cable Tension
Monitor Roller
Screw
14-10x2" (2)
The position of
the cable
tension monitor
will vary
depending on
the type of door
and drum used.
11
Install door control within sight of door, out of reach of small children at a
minimum height of 5 feet (1.5 m) above floors, landings, steps or any other
adjacent walking surface, and away from ALL moving parts of door.
1. Remove the control station cover.
2. Fasten the control station to the wall at least 5' (1.5 m) above floors, landings,
steps or any other adjacent walking surface. The installation surface must be
smooth and flat.
3. Select appropriate knockout and run the wires to the operator.
4. Connect wires to the control station and replace the control station cover.
5. Fasten the warning placards to the wall next to the three button control station.
NOTE: DO NOT connect the power and operate the door operator at this time. The door
will travel to the full open position but will not return to the close position until the
safety reversing sensors are connected and properly aligned. See page 12.
Install the Three Button Control Station
5
Installation
To prevent possible SERIOUS INJURY or
DEATH from electrocution:
• Be sure power is NOT connected
BEFORE installing door control.
• Connect ONLY to 24VOLT low voltage
wires.
To prevent possible SERIOUS INJURY or
DEATH from a closing door:
• Install door control within sight of door,
out of reach of children at a minimum
height of 5 feet (1.5 m) above floors,
landings, steps or any other adjacent
walking surface, and away from ALL
moving parts of door.
• NEVER permit children to operate or
play with door control push buttons or
remote controls.
• Activate door ONLY when it can be seen
clearly, is properly adjusted and there are
no obstructions to door travel.
• ALWAYS keep door in sight until
completely closed. NEVER permit anyone
to cross path of closing door.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
To insert or
release wire,
push in tab with
screwdriver tip
Three Button
Control Station
132A2112-2
132LA2112-20-A
Shown at 100% (4.25" x 2.375")
ECN: 07-0326
14-May-2007
DO NOT EXCEED 10 DOOR OPERATIONS
PER HOUR.
FASTEN LABEL ADJACENT TO DOOR.
NE PAS FAIRE FONCTIONNER LA PORTE
PLUS DE 10 FOIS PAR HEURE.
FIXER L’ÉTIQUETTE PRÈS DE LA
PORTE.
40-35246-10-A
Shown at 100%
ECN: 09-2104
4-May-2009
NOTE: If you are not installing the three button
control station, you must install a jumper wire
(not provided) between terminals 4 and 14.
Operator will not run if there is not a 3 button
control station or the jumper wire installed.
12
The safety reversing sensor must be connected and aligned correctly before the
door will move in the down direction. This is a required safety device and cannot
be disabled. The LiftMaster Light Curtain LC36A may be installed as an optional
secondary safety device, see page 15.
IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSORS
When properly connected and aligned, the safety reversing sensor will detect an obstacle
in the path of its electronic beam. The sending sensor (with an amber indicator light)
transmits an invisible light beam to the receiving sensor (with a green indicator light).
If an obstruction breaks the light beam while the door is closing the door will stop and
reverse to the full open position.
The sensors must be installed inside the building so that the sending and receiving
sensors face each other across the door, no more than 6" (15 cm) above the floor. Either
can be installed on the left or right of the door as long as the sun never shines directly into
the receiving sensor lens.
The mounting brackets are designed to clip onto the track of sectional doors without
additional hardware.
If it is necessary to mount the sensors on the wall, the brackets must be securely fastened
to a solid surface such as the wall framing. Extension brackets (see accessories) are
available if needed. If installing in masonry construction, add a piece of wood at each
location to avoid drilling extra holes in masonry if repositioning is necessary.
The invisible light beam path must be unobstructed. No part of the door (door tracks,
springs, hinges, rollers or other hardware) may interrupt the beam while the door is
closing.
Invisible Light Beam
Protection Area
Safety Reversing Sensor
6" (15 cm) max. above floor
Facing the door from inside the garage.
Safety Reversing Sensor
6" (15 cm) max. above floor
Be sure power is NOT connected to the
door operator BEFORE installing the
safety reversing sensor.
To prevent SERIOUS INJURY or
DEATH from a closing door:
• Correctly connect and align the
safety reversing sensor. This
required safety device MUST NOT
be disabled.
• Install the safety reversing sensor
so beam is NO HIGHER than 6"
(15cm) above floor.
Installation
Install the Protector System
6
Facing the door from inside the building.
13
OPTION C: FLOOR INSTALLATION
1. Use wood blocks or extension
brackets (see Accessories) to elevate
sensor brackets so the lenses will be
no higher than 6" (15 cm) above the
floor.
2. Carefully measure and place right and
left assemblies at the same distance
out from the wall. Be sure all door
hardware obstructions are cleared.
3. Fasten to the floor with concrete
anchors as shown.
Inside
Garage
Wall
Inside
Garage
Wall
Inside
Garage
Wall
Inside
Garage
Wall
Installation
Fasten Wood Block to Wall with
Lag Screws (not provided)
Attach with Concrete Anchors
(not provided)
OPTION A: TRACK INSTALLATION
1. Slip the curved arms over the
rounded edge of each door track,
with the curved arms facing the door.
Snap into place against the side of the
track. It should lie flush, with the lip
hugging the back edge of the track, as
shown.
If your door track will not support the
bracket securely, wall installation is
recommended.
OPTION B: WALL INSTALLATION
1. Place the bracket against the wall
with curved arms facing the door. Be
sure there is enough clearance for the
sensor beam to be unobstructed.
2. If additional depth is needed, an
extension bracket (see Accessories)
or wood blocks can be used.
3. Use bracket mounting holes as a
template to locate and drill (2) 3/16"
diameter pilot holes on the wall at
each side of the door, no higher than
6" (15 cm) above the floor.
4. Attach brackets to wall with
lagscrews (notprovided).
If using extension brackets or wood blocks,
adjust right and left assemblies to the same
distance out from the mounting surface.
Make sure all door hardware obstructions
are cleared.
Inside
Garage
Wall
Inside
Garage
Wall
INSTALLING THE BRACKETS
Be sure power to the operator is disconnected. Install and align the brackets so the safety reversing sensors will face each other across
the door, with the beam no higher than 6" (15 cm) above the floor. Choose one of the following installations.
Door Track
Safety Reversing Sensor
Bracket
Safety Reversing Sensor Bracket
Lag Screws (not provided)
Safety Reversing Sensor Bracket
Inside
Garage
Wall
Inside
Garage
Wall
(Provided with Extension Bracket)
Extension Bracket (See Accessories)
Safety Reversing Sensor
Bracket
(Provided with
Extension Bracket)
14
Installation
WIRE THE SAFETY REVERSING SENSORS
1. Run the wire from both sensors to the door operator. Attach the wire to the wall and
ceiling with the staples.
2. Strip 7/16" (11 mm) of insulation from each set of wires. Separate the wires. Twist
the white wires together. Twist the white/black wires together.
3. Insert the white wires into the white terminal on the door operator. Insert the white/
black wires into the grey terminal on the door operator. To insert or remove the
wires from the terminal, push in the tab with a screwdriver tip.
MOUNTING THE SAFETY REVERSING SENSORS
1. Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor.
2. Use wing nuts to fasten safety reversing sensors to brackets, with lenses pointing
toward each other across the door. Be sure the lens is not obstructed by a bracket
extension.
3. Finger tighten the wing nuts.
HARDWARE
Carriage Bolt
Wing Nut
Wing Nut
1/4"-20 (2)
Carriage Bolt
1/4"-20x1/2" (2)
1 2 3 4 5 6 7 8 9 10 11 12
13
WHT/
BLK
WHT
Bell wire
7/16
(11mm)
NOTE: The door referenced in this image depicts
standard or high lift applications. If mounting
this on a vertical lift door, your door will look
different.
15
Installation
Install the Light Curtain (Not Provided)
7
The following are general instructions for a typical installation, refer to the
complete instructions included with the Light Curtain.
The plug-in power supply accessory (model 100MAPS) is required to power the
Light Curtain. LiftMaster Light Curtain (Model LC-36A) is an ancillary entrapment
protection device designed with 8 optical sensors that form 22 total invisible light
beams which create a cross-pattern or netting effect for maximum protection against
entrapment. If an obstruction breaks any light beam while the door is closing, the
operator will stop and reverse to the full open position. The Light Curtain Transmitter
must be installed facing the Light Curtain Receiver across the entrapment zone, 12"
(30.5 cm) above the primary monitored entrapment protection device. The minimum
installation width is 3 ft. (.91 m) and the maximum width is 33 ft. (10 m).
NOTE: Ensure that no part of the door, door tracks, springs, hinges, rollers, cords or
other hardware interrupts the light beam while the door is closing.
INSTALLATION
1. Fasten the mounting brackets loosely to both Light Curtains with the screws
provided.
2. Measure a minimum of 12" above the safety reversing sensors. Mark this
location. The Light Curtain must be installed above this point.
3. Hold the Light Curtain up to the desired mounting location with the cable end
pointing upward. Secure the bottom mounting bracket to the mounting surface.
The mounting brackets must be securely fastened to a solid surface such as a
wall framing.
4. Make sure the Light Curtain is level and secure the upper mounting bracket to
the mounting surface.
5. Tighten the screws to secure the Light Curtain to the mounting bracket.
6. Secure the other Light Curtain to the opposite side of the door following steps
2 - 5, making sure they are aligned.
WIRING
NOTE: Complete all wiring of the light curtain to the operator BEFORE adding power
to ensure the light curtain is not damaged.
Transmitting Light Curtain:
• White Wire to white terminal on door operator
• Black Wire to gray terminal on door operator
Transmitting and Receiving Light Curtains:
• Brown Wire (+) to White/Black on power supply
• Blue Wire (-) to Black on power supply
Black
White
12" (30.5 cm) minimum above
the safety reversing sensor
Brown (+)
Blue (-) Black
Black/White
Plug-In Power
Supply
Transmitting Light
Curtain
Receiving Light
Curtain
Light
Curtain
Nylon
nut
Mounting
bracket
Screw with
nylon washer
To prevent possible SERIOUS INJURY or
DEATH from a closing door:
• Be sure to DISCONNECT POWER to
the operator BEFORE installing the
Light Curtain.
• The door MUST be in the fully opened
or closed position BEFORE installing
the Light Curtain.
• Correctly connect and align the Light
Curtain transmitter and receiver.
• The Light Curtain is for use with
LiftMaster Commercial Doors. Use
with ANY other product voids the
warranty.
• DO NOT use this product for the
protection of dangerous machinery
or in explosive atmospheres or
radioactive environments. Use ONLY
specific and approved types of devices
for such applications.
• The Light Curtain MUST be installed
ONLY by authorized and fully trained
personnel.
• LiftMaster Monitored Entrapment
Protection devices are required in
addition to the Light Curtain. The Light
Curtain may NOT be used as the sole
entrapment protection device for ANY
entrapment zone.
16
Green
Ground
Screw
Ground Wire
Black Wire
Wire Nuts
(Not Provided
White Wire
Flexible
Conduit
90˚
Connector
(Not
Provided)
Green Wire
White Wire
Black Wire
BACK VIEW
Connect Power
8
Installation
OPTION B: PERMANENT WIRING
CONNECTION
If permanent wiring is required by
your local code, refer to the following
procedure.
To make a permanent connection through
the 7/8" hole in the back of the door
operator (according to local code):
1. Be sure power is NOT connected to
the door operator, and disconnect
power to circuit.
2. Remove the door operator from the
torsion bar, remove cover screws and
set the cover aside.
3. Cut the line cord 6" (15.2 cm) above
the strain relief.
4. Squeeze the strain relief and push
into motor unit, then remove the
strain relief from the line cord.
5. Install a 90° conduit (not provided)
or flex cable adapter (not provided) to
the 7/8" hole. Reinstall door operator
to torsion bar.
6. Run wires through conduit, cut to
proper length and strip insulation.
7. Strip 1/2" (1.3 cm) of insulation from
the existing black, white and green
wires.
8. Connect the line to the black wire and
neutral to the white wire with wire
nuts (not provided). Connect ground
wire to the green ground screw.
9. Properly secure wires under plastic
ties so that they do not come into
contact with moving parts.
10. Reinstall cover.
To avoid installation difficulties, do not
run the door operator at this time.
To reduce the risk of electric shock, your
door operator 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.
There are two options for connecting
power:
OPTION A: TYPICAL WIRING
1. Plug in the door operator into a
grounded outlet.
2. DO NOT run door operator at this
time.
To prevent possible SERIOUS INJURY or DEATH from electrocution or fire:
• Be sure power is NOT connected to the operator, and disconnect power to circuit
BEFORE removing cover to establish permanent wiring connection.
• Door installation and wiring MUST be in compliance with ALL local electrical and
building codes.
• NEVER use an extension cord, 2-wire adapter or change plug in ANY way to make it
fit outlet. Be sure the operator is grounded.
RIGHT
WRONG
RIGHT WRONG
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
RIGHT
WRONG
RIGHT WRONG
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
WRONGRIGHT
17
RED
WHITE
WHITE
GREY
Receiving Sensor
Green LED
Sending Sensor
Amber LED
Installation
IF THE AMBER LED ON THE SENDING SENSOR IS NOT GLOWING:
• Make sure there is power to the door operator.
• Make sure the sensor wire is not shorted/broken.
• Make sure the sensor has been wired correctly: white wires to white terminal and
white/black wires to grey terminal.
If the receiving sensor is in direct
sunlight, switch it with sending
sensor so it is on the opposite side
of the door.
(Invisible light beam)
ENSURE THE SAFETY REVERSING SENSORS ARE ALIGNED
The door will not close if the sensors have not been installed and aligned correctly.
When the light beam is obstructed or misaligned while the door is closing, the door
will reverse. If the door is already open, it will not close. The sensors can be aligned by
loosening the wing nuts, aligning the sensors, and tightening the wing nuts.
1. Check to make sure the LEDs in both sensors are glowing steadily. The LEDs in both
sensors will glow steadily if they are aligned and wired correctly.
WHITE
GREY
IF THE GREEN LED ON THE RECEIVING SENSOR IS NOT GLOWING:
• Make sure the sensor wire is not shorted/broken.
• Make sure the sensors are aligned.
18
Install the Battery Backup (Not Provided)
9
Installation
To reduce the risk of FIRE or INJURY
to persons:
• Disconnect ALL electric and battery
power BEFORE performing ANY
service or maintenance.
• Use ONLY LiftMaster part # 485LM
for replacement battery.
• DO NOT dispose of battery in fire.
Battery may explode. Check with local
codes for disposal instructions.
ALWAYS wear protective gloves and
eye protection when changing the
battery or working around the battery
compartment.
When in Battery Backup mode, myQ
®
Smartphone Control and wireless myQ
®
devices
will be disabled.
1. Unplug the door operator.
2. Use a Phillips head screwdriver to remove the battery cover on the door operator.
3. Partially insert the battery into the battery compartment with the terminals facing
out.
4. Connect red (+) and black (-) wires from the door operator to the corresponding
terminals on the battery.
5. Replace the battery cover.
6. Plug in the door operator.
BATTERY STATUS LED
Green LED:
All systems are normal.
• A solid green LED light indicates the battery is fully charged.
• A flashing green LED indicates the battery is being charged.
Orange LED:
The door operator has lost power and is in battery backup mode.
• A solid orange LED with beep, sounding approximately every 2 seconds, indicates
the door operator is operating on battery power.
• A flashing orange LED with beep, sounding every 30 seconds, indicates the battery
is low.
Red LED:
The door operator's 12V battery needs to be replaced.
• A solid red LED with beep, sounding every 30 seconds, indicates the 12V battery will
no longer hold a charge and needs to be replaced. Replace the battery to maintain
the battery backup feature.
NOTE: Battery does not have to be fully charged to activate the door operator.
Red wire (+)
Battery Status LED
Black wire (-)
19
Install the LMi5 Interface Accessory
10
Installation
The LMi5 accessory provides the ability to monitor up to 5 sensors
around the dock door with the myQ
®
Business™ Facility. These
sensors provide the status of equipment to the myQ
®
Business™
Facility.
Typical sensors include:
PRE-SENSOR: This is a trailer presence sensor to provide status
of whether a trailer is present at the dock or not.
WS-SENSOR: This is a mechanical roller limit switch to
determine the status of a trailer restraint system
or position of a dock leveler (deployed or stored)
WS-SENSOR-E: This is a photoelectrical sensor to determine the
status of a trailer restraint system or position of a
dock leveler (deployed or stored)
Once the sensors are connected to the LMi5, go to
www.myQBusiness.com to set up your interface box configuration
and name the connected sensors: (Normally Open/NO or Normally
Closed/NC). The default status is Normally Open.
INSTALLATION
1. Select a convenient location within 35' (10.6 m) of the
operator to mount the LMi5 accessory.
2. Remove the 4 screws on the cover of the LMi5 and remove
the cover (Figure 1)
3. Add ½" conduit connector or cable gland (not provided)
to top and bottom holes of LMi5 per requirements of
installation.
4. Make wire connections (Figure 2) from CMD (Command)
to Terminals 2 (red) and 3 (white) on the DDO8900W.
Recommended: solid wire 14-24AWG. Route wiring through
the top of LMi5.
5. Press the SW1 button to learn the LMi5 to the operator. The
LED should remain lit once learned.
6. Make wire connections (Figure 2) from ACCY (Accessory)
inputs to the sensors. Recommended: solid wire 14-24AWG.
NOTE: Provide all required power externally – Accessory
sensors cannot be powered from the LMi5 accessory. Route
all wiring for the sensors to the center of the board and down
through the bottom of the LMi5.
7. Toggle the accessory device (switch the state of the contact).
You should see the LED on the related LMi5 input change
state in response.
8. For wire retention of the various accessories, use the cutout
near the bottom of the board (see Figure 2) in conjunction
with a cable tie (not provided) to retain the various wires
from the sensors.
9. Secure the cover with the 4 screws provided.
Figure 1
Figure 2
To Terminal 2
To Terminal 3
Cut-out for
Cable Restraint
(cable tie to
secure wires
not included)
To Accessories
Mounting
Holes
SW1
Learn Button
To DDO8900W
• Do not apply line voltage power directly
to both terminals of each LMi5 input. An
accessory must be connected as part of
the circuit.
• The LMi5 should only be connected to dry
contact switches/sensors, as it will not
operate with open collector type devices.
• You may only connect ONE LMi5 Interface
to a single dock door operator. Multiple
LMi5 units are not supported.
LMi5 Interface Accessory
20
While programming, the UP and DOWN buttons can be used to move the door as needed.
1. Press and hold the Adjustment Button until the UP Button begins to flash and/or a
beep is heard.
2. Press and hold the UP Button until the door is in the desired UP position.
3. Once the door is in the desired UP position press and release the Adjustment Button.
The door operator will beep and the DOWN button will flash.
4. Press and hold the DOWN Button until the door is in the desired DOWN position.
5. Once the door is in the desired DOWN position press and release the Adjustment
Button. The door operator will beep and the UP button will flash.
6. Press and release the UP Button. When the door travels to the programmed UP
position, the DOWN Button will begin to flash.
7. Press and release the DOWN Button. The door will travel to the programmed DOWN
position. Programming is complete.
If you are unable to program the travel:
• Ensure the cable tension monitor is correctly installed (see page 10).
• Check to see if the safety reversing sensors are misaligned or obstructed (refer to
page 17). When the sensors are aligned and unobstructed, cycle the door through
a complete up and down cycle using the remote control or the UP and DOWN
buttons. If you are unable to operate the door up and down, repeat the steps above.
Travel limits regulate the points at which the door will stop when moving up or down.
Program the Travel
Adjustments
Without a properly installed safety
reversal system, persons (particularly
small children) could be SERIOUSLY
INJURED or KILLED by a closing door.
• Incorrect adjustment of door travel
limits will interfere with proper
operation of safety reversal system.
• After ANY adjustments are made,
the safety reversal system MUST
be tested. Door MUST reverse on
contact with 1-1/2" high (3.8 cm)
object (or 2x4 laid flat) on floor.
1
1 2
3
5
4
6 7
PROGRAMMING BUTTONS
UP Button
Adjustment
Button
DOWN Button
To prevent damage to vehicles, be
sure fully open door provides adequate
clearance.
21
TEST
1. With the door fully open, place a 1-1/2" (3.8 cm) board (or a 2x4 laid flat) on the
floor, centered under the door.
2. Operate the door in the down direction. The door MUST reverse when it makes
contact with the board.
ADJUST
If the door stops but does not reverse:
1. Review the installation instructions provided to insure all steps were followed;
2. Repeat Program the Travel (see Adjustment Step 1);
3. Repeat the Safety Reversal test. If the test continues to fail, call a trained door
systems technician.
IMPORTANT SAFETY CHECK:
Test the Safety Reverse System after:
• Each adjustment of limits.
• Any repair to or adjustment of the door (including springs and hardware).
• Any repair to or buckling of the floor.
• Any repair to or adjustment of the operator.
Test the Safety Reversal System
Test the Protector System
1. Press the control station button to open the door.
2. Place the operator carton in the path of the door.
3. Press the control station button to close the door. The door will not move more than
an inch (2.5 cm).
The door operator will not close from a control station if the indicator light in either sensor
is off (alerting you to the fact that the sensor is misalignedor obstructed).
If the door operator closes the door when the safety reversing sensor is obstructed,
do not operate the door. Call for a trained door systems technician.
Without a properly installed safety
reversal system, persons (particularly
small children) could be SERIOUSLY
INJURED or KILLED by a closing door.
• Safety reversal system MUST be
tested every month.
• After ANY adjustments are made,
the safety reversal system MUST
be tested. Door MUST reverse on
contact with 1-1/2" (3.8 cm) high
object (or 2x4 laid flat) on the floor.
Without a properly installed safety
reversing sensor, persons (particularly
small children) could be SERIOUSLY
INJURED or KILLED by a closing door.
2
3
Safety Reversing Sensor
Safety Reversing Sensor
1-1/2" (3.8 cm) board
(or a 2x4 laid flat)
Adjustments
22
1. With the door fully closed, push on the front of the cable tension monitor. A
click should be heard. If there is no click, the roller may be hitting the jamb and
not allowing the switch to detect slack in the cable. Make sure the cable tension
monitor is mounted flush with the mounting surface and the roller is free from any
obstructions.
If your cable tension monitor has been activated the UP and DOWN arrows will flash
diagnostic code 3-5, see page 27.
Disengage any door locks before proceeding. The door should be fully closed if possible.
Pull down on the emergency release until a click noise is heard from the door operator
and lift the door manually.
To reconnect the door to the door operator, pull the emergency release straight down a
second time until a click noise is heard from the door operator. The door will reconnect on
the next UP or DOWN operation.
TEST THE EMERGENCY RELEASE:
1. Make sure the door is closed.
2. Pull the emergency release. The door should then be able to be opened manually.
3. Return the door to the closed position.
4. Pull the sash chain a second time.
5. Reconnect the door to the door operator.
Test Cable Tension Monitor
To Open the Door Manually
4
1. With the door fully closed, the automatic door lock bolt should be protruding
through the track.
2. Operate the door in the open direction. The automatic door lock should retract before
the door begins to move.
3. Operate the door in the down direction. When the door reaches the fully closed
position, the automatic door lock should move into lock position to secure the door.
NOTE: If the automatic door lock does not function, the lock can be manually
released by sliding the manual release handle to the open position.
Test Automatic Door Lock (Not Provided)
5
6
To prevent possible SERIOUS INJURY
or DEATH from a falling door:
• If possible, use emergency release
to disengage door ONLY when door
is CLOSED. Weak or broken springs
or unbalanced door could result in
an open door falling rapidly and/or
unexpectedly.
• NEVER use emergency release unless
doorway is clear of persons and
obstructions.
Automatic
Door
Lock
Manual
Release
Lock Bolt “Locked”
UP and
DOWN
arrows
Cable Tension
Monitor
Roller
Sash Chain
Adjustments
23
Operation
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of SEVERE INJURY
or DEATH:
1. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS.
2. ALWAYS keep remote controls out of reach of children.
NEVER permit children to operate or play with door control
push buttons or remote controls.
3. ONLY activate door when it can be seen clearly, it is properly
adjusted and there are no obstructions to door travel.
4. ALWAYS keep door in sight and away from people and
objects until completely closed. NO ONE SHOULD CROSS
THE PATH OF THE MOVING DOOR.
5. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY
OPENED DOOR.
6. If possible, use emergency release to disengage door ONLY
when door is CLOSED. Use caution when using this release
with the door open. Weak or broken springs or unbalanced
door could result in an open door falling rapidly and/or
unexpectedly and increasing the risk of SEVERE INJURY or
DEATH.
7. NEVER use emergency release unless doorway is clear of
persons and obstructions.
8. After ANY adjustments are made, the safety reversal system
MUST be tested. Failure to adjust the door operator properly
may cause SEVERE INJURY or DEATH.
9. Safety reversal system MUST be tested every month. Door
MUST reverse on contact with 1-1/2" (3.8 cm) high object
(or a 2x4 laid flat) on the floor. Failure to adjust the door
operator properly may cause SEVERE INJURY or DEATH.
10. ALWAYS KEEP DOOR PROPERLY BALANCED (see page4).
An improperly balanced door may NOT reverse when
required and could result in SEVERE INJURY or DEATH.
11. ALL repairs to cables, spring assemblies and other
hardware, ALL of which are under EXTREME tension, MUST
be made by a trained door systems technician.
12. To avoid SERIOUS PERSONAL INJURY or DEATH from
electrocution, disconnect ALL electric and battery power
BEFORE performing ANY service or maintenance.
13. This door operator system is equipped with an unattended
operation feature. The door could move unexpectedly. NO
ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
14. SAVE THESE INSTRUCTIONS.
24
FEATURES
Your door operator is equipped with
features to provide you with greater control
over your door operation.
myQ
®
myQ
®
allows you to control your door
operator from your mobile device
or computer from anywhere. myQ
®
technology uses a 900Mhz signal to
provide two way communication between
the door operator and myQ
®
enabled
accessories. The door operator has an
internal gateway that allows the door
operator to communicate directly with a
home Wi-Fi network and access your myQ
®
account. Go to myQBusiness.com for more
information.
THE PROTECTOR SYSTEM (SAFETY
REVERSING SENSORS)
When properly connected and aligned,
the safety reversing sensors will detect
an obstruction in the path of the infrared
beam. If an obstruction breaks the infrared
beam while the door is closing, the door
will stop and reverse to full open position.
If the door is fully open, and the safety
reversing sensors are not installed, or are
misaligned, the door will not close from
a remote control. However, you can close
the door if you hold the button on the door
control or keyless entry until the door is
fully closed. The safety reversing sensors
do not affect the opening cycle. For more
information see page 12.
Using Your Door Operator
ENERGY CONSERVATION
For energy efficiency the door operator
will enter sleep mode when the door is
fully closed. The sleep mode shuts the
door operator down until activated. When
the door operator enters sleep mode, the
sensor LEDs will turn off and whenever the
door operator is activated, the sensor LEDs
will light. The door operator will not go into
the sleep mode until the door operator has
completed 5 cycles upon power up.
USING YOUR DOOR OPERATOR
The door operator can be activated through
a wall-mounted door control, remote
control, wireless keyless entry or myQ
®
accessory. When the door is closed and
the door operator is activated the door will
open. If the door senses an obstruction
or is interrupted while opening the door
will stop. When the door is in any position
other than closed and the door operator
is activated the door will close. If the door
operator senses an obstruction while
closing, the door will reverse. However,
you can close the door if you hold the
button on the door control or keyless entry
until the door is fully closed. The safety
reversing sensors do not affect the opening
cycle. The safety reversing sensor must
be connected and aligned correctly before
the door operator will move in the down
direction.
BATTERY BACKUP (OPTIONAL)
The battery backup system allows access
in and out of your building, even when
the power is out. When the door operator
is operating on battery power, the door
operator will run slower, the Battery Status
LED will glow solid orange, and a beep will
sound approximately every 2 seconds.
NOTE: Wi-Fi capability will not be enabled
when operating under Battery Backup
conditions.
Operation
MEMORY CAPACITY
SECURITY+ 2.0
®
ACCESSORIES MEMORY CAPACITY
Remote Controls Up to 40
Keyless Entries Up to 3
Interface Boxes Up to 1
myQ
®
Accessories Up to 16
25
Remote Control (Not Provided)
Up to 40 Security+ 2.0 remote controls can be programmed to the door operator.
Older LiftMaster remote controls are NOT compatible, see page 31 for compatible
accessories. To program additional accessories refer to the instructions provided with the
accessory or visit LiftMaster.com. If your vehicle is equipped with a Homelink
®
, you may
require an external adapter depending on the make, model, and year of your vehicle. Visit
www.homelink.com for additional information.
To Erase the Memory
ERASE ALL REMOTE CONTROLS AND KEYLESS ENTRIES
1. Press and hold the LEARN button on door operator until the learn LED goes out
(approximately 6 seconds). All remote control and keyless entry codes are now
erased.
Reprogram any accessory you wish to use.
ERASE ALL DEVICES (INCLUDING myQ
®
ENABLED ACCESSORIES)
1. Press and hold the LEARN button on door operator until the learn LED goes out
(approximately 6 seconds).
2. Immediately press and hold the LEARN button again until the learn LED goes out. All
codes are now erased.
Reprogram any accessory you wish to use.
ERASE THE Wi-Fi NETWORK FROM THE DOOR OPERATOR
Press and hold the black adjustment button until 3 beeps are heard (approximately
6seconds).
Programming
LEARN
Button
Black Adjustment Button
26
Maintenance
MAINTENANCE SCHEDULE
Once a Month
• Manually operate door. If it is unbalanced or binding, call a trained door systems technician.
• Check to be sure door opens and closes fully. Adjust limits if necessary (see Adjustment Step 1).
• Repeat the safety reverse test. Make any necessary adjustments (see Adjustment Step 2).
Once a Year
• Oil door rollers, bearings and hinges. The door operator does not require additional lubrication. Do not grease the door tracks.
Care of Your Door Operator
NOTICE: This device complies with Part 15 of the FCC rules and Industry Canada’s license-exempt RSSs. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device must be installed to ensure a minimum 20 cm (8 in.) distance is maintained between users/bystanders and device.
This device has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules and Industry Canada
ICES standard. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interfer-
ence to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Timer to Close (TTC) Activation:
TIMER TO CLOSE PROGRAMMING VIA THE OPERATOR:
• Press and release the yellow Learn button 4 times to activate the TTC programming mode.
• The yellow learn LED and UP Arrow will turn ON as an indication that the operator is in TTC programming mode.
• The operator can move between OFF/1/5/10 minutes increments using the UP and DOWN arrows. The yellow learn LED will blink
corresponding to the number of minutes selected. For example, if the user selects 5 minutes, the yellow learn LED will blink 5 times.
• Press the rectangular adjustment button to save the setting and exit the TTC programming mode.
• The operator TTC programming mode will time out after 30 seconds unless the rectangular adjustment button is pressed. If the
programming timer expires, the TTC will retain its previous setting.
• To Exit an uncompleted TTC programming session, press and release the learn button one more time to exit.
USER feedback If TTC timer is actively counting down: The last 10 seconds of timer to close provides audible alert from the operator.
This cannot be turned off.
TTC TIMING CHANGE:
• Press the yellow learn button 4 times to activate the TTC programming mode.
• When reentering activation mode, TTC settings will be reset to OFF. For example, the existing timer is set to 5 minutes and the user
wants to reset to 10 minutes. To do so, the user will need to press the UP button until the Learn LED blinks 10 times for 10 minutes.
TTC DEACTIVATION:
• Enter into TTC programming mode as described above.
• Press the rectangular adjustment button to save the setting.
TTC TEMPORARY SUSPENSION
• Timer can be suspended while in the open position by pressing the OPEN button during the 10 second TTC warning (audible beeping
from the operator - 10 second countdown prior to TTC activation).
TTC OPERATION WITH IR SENSORS :
• The TTC feature will not be activated if IR sensors are not connected to the operator.
• If the TTC is active, the timer is counting down, and the IR beams are interrupted, the TTC timer will be restarted.
• If the door encounters an IR sensor obstruction while closing, it will reverse open and not close until the IR sensor obstruction has
been cleared.
IF TTC is active, visual warnings can be added to alert bystanders before a door starts closing. See optional accessories.
TIMER TO CLOSE PROGRAMMING VIA AN OPTIONAL WALL CONTROL
• The 880LM LCD Control Panel or the 881LM Motion Detecting Control Panel with Timer to Close can be wired into the Red/White
terminals as an optional control station. Both of these panels offer the Timer to Close feature. See instructions for wiring and
programming TTC in the instruction manuals provided with those panels.
Programming
27
Troubleshooting
Diagnostic Chart
Your door operator is programmed with
self-diagnostic capabilities. The UP and
DOWN arrows on the door operator flash
the diagnostic codes.
Garage Door Opener
Diagnostic
LED
UP Button
DOWN Button
DIAGNOSTIC CODE DIAGNOSTIC CODE SOLUTION
Up Arrow
Flash(es)
Down Arrow
Flash(es)
1 1 The door operator will
not close.
Safety reversing sensors are not installed, connected or wires may be cut.
Inspect sensor wires for a disconnected or cut wire.
1 2 The door operator will
not close.
There is a short or reversed wire for the safety reversing sensors. Inspect
sensor wire at all staple points and connection points and replace wire or
correct as needed.
1 3 The door control will not
function.
The wires for the door control are shorted or the door control is faulty.
Inspect sensor wire at all staple points and connection points and replace
wire or correct as needed.
1 4 The door operator will
not close.
Safety reversing sensors are misaligned or were momentarily obstructed.
Realign both sensors to ensure both LEDs are steady and not flickering.
Make sure nothing is hanging or mounted on the door that would interrupt
the sensor's path while closing.
1 5 Door moves 6-8"
(15-20cm) stops or
reverses.
Manually open and close the door. Check for binding or obstructions, such
as a broken spring or door lock, correct as needed. Check wiring connections
at travel module and at the logic board. Replace travel module if necessary.
No movement, only a
single click.
Manually open and close the door. Check for binding or obstructions, such
as a broken spring or door lock, correct as needed. Replace logic board if
necessary.
Door operator hums
for 1-2 seconds no
movement.
Manually open and close the door. Check for binding or obstructions,
such as a broken spring or door lock, correct as needed. Replace motor if
necessary.
1 6 Door coast after it has
come to a complete stop.
Program travel to coasting position or have door balanced by a trained
technician.
2 1-5 No movement or sound. Replace logic board.
3 1 The door operator moves
slightly, then stops
Activate the door operator again. If problem persists, replace logic board.
3 3 The battery status LED is
constantly flashing green.
Battery backup charging circuit error, replace logic board.
3 5 The door operator
will not close or door
reverses during travel.
If two cable tension monitors were previously installed and one has been
removed, unplug and plug in the operator three times to relearn the monitor
to the operator.
4 1-4 Door is moving stops and
or reverses.
Manually open and close the door. Check for binding or obstructions, such
as a broken spring or door lock, correct as needed. If the door is binding or
sticking contact a trained door systems technician. If door is not binding or
sticking attempt to reprogram travel (refer to page 20).
4 5 Door operator runs
approximately 6-8"
(15-20 cm), stops and
reverses.
Communication error to travel module. Check travel module connections,
replace module if necessary.
4 6 The door operator will
not close.
Safety reversing sensors are misaligned or were momentarily obstructed.
Realign both sensors to ensure both LEDs are steady and not flickering.
Make sure nothing is hanging or mounted on the door that would interrupt
the sensor's path while closing.
28
Troubleshooting
The door operator doesn't operate from the single or three button control station:
• Check If the wires are loose or disconnected at each terminal of the single or 3 button control station as well as the operator
terminals. If no 3 button control station is installed, please verify placement of the jumper between terminals 4 and 14. All wiring
connections must be made or the door will not close.
• Does the door operator have power? Plug a lamp into the outlet. If it doesn't, check the fuse box or the circuit breaker. (Some
outlets are controlled by a wall switch.)
• Have you disabled all door locks? Review installation instruction warnings on page 7.
• Are the wiring connections correct? Review Installation Step 5.
• Is there a build-up of ice or snow under the door? The door may be frozen to the ground. Remove any restriction.
• The door spring may be broken. Have it replaced (see page 3 for reference).
The door operator operates from the single or three button control station, but not from a remote control:
• Reprogram the remote control and replace the battery if necessary. Repeat with all remote controls.
The door opens and closes byitself:
• Be sure that all remote control push buttons are off.
• Remove the bell wire from the single button control station terminals and operate from the remote only. If this solves the problem,
the single button control station is faulty, or there is an intermittent short in the wire. Replace the control station.
• Erase the memory and reprogram all remote controls (refer to the instructions provided with the remote control or visit
LiftMaster.com).
The door doesn't open completely:
• Disable any door locks.
• Is something obstructing the door? Is it out of balance, or are the springs broken? Remove the obstruction or have a service
technician repair the door.
The door opens but won't close:
• Check that cable tension monitor is correctly installed. If a second cable tension monitor has been removed, follow the instructions
to relearn a single cable tension monitor (See Installation Step 4).
• The safety reversing sensor must be connected and aligned correctly before the door operator will move in the down direction. If
you are able to close the door using constant pressure, verify the safety reversing sensors are properly installed, aligned and free of
any obstructions (see page 17).
Repeat the safety reverse test after the adjustment is complete.
The door reverses for no apparent reason:
• Check that cable tension monitor is correctly installed. If a second cable tension monitor has been removed, follow the instructions
to relearn a single cable tension monitor (See Installation Step 4).
• Is something obstructing the door? Pull the emergency release. Operate the door manually. If it is unbalanced or binding, call a
trained door systems technician.
• Clear any ice or snow from the floor area where the door closes.
Repeat safety reverse test after adjustments.
The door operator strains to operate door:
• The door may be out of balance or the springs may be broken. Close the door and use the emergency release to disconnect the
door. Open and close the door manually. A properly balanced door will stay in any point of travel while being supported entirely by
its springs. If it does not, disconnect the door operator and call a trained door systems technician.
The door operator motor hums briefly, then won't work:
• The door springs may be broken. See above.
• If the problem occurs on the first operation of the door operator, door may be locked. Disable any door locks.
Additional Troubleshooting
29
Troubleshooting
Additional Troubleshooting (Continued)
The door operator won't operate due to power failure:
• Disable any door locks. Use the emergency release to disconnect the door. The door can be opened and closed manually. When
power is restored, pull emergency release a second time.
• When in battery backup mode, battery power will last for 30 hours or up to 20 cycles over a 24 hour period.
Door loses limits:
• Collar not tightened securely. Tighten collar and reprogram limits (see Adjustment Step 1).
The door operator moves when the door is in operation:
• Some minor movement is normal for this product. If it is excessive the collar will wear prematurely.
• Check to make sure the torsion bar is not moving left/right excessively.
• Check to make sure the torsion bar is not visibly moving up and down as it rotates.
• Check that the door operator is mounted at a right angle to the jackshaft. If not, move the position of the mounting bracket.
Automatic door lock connector will not fit the door operator plug:
• Older model 24V door locks are incompatible. Use automatic door lock model 841LM, see Accessories page 31.
The door operator is beeping:
• A fast beeping indicates unattended closure. The operator has been activated by the myQ
®
App or the garage and gate monitor.
• A solid orange LED with beep, sounding approximately every 2 seconds, indicates the door operator is operating on battery power.
• A flashing orange LED with beep, sounding every 30 seconds, indicates the battery is low.
• A solid red LED with beep, sounding every 30 seconds, indicates the 12V battery will no longer hold a charge and needs to be
replaced.
The door doesn't open as quickly as other dock door operators installed in the building:
• For heavier doors, consider ordering a battery for extra power.
30
Repair Parts
Installation Parts
6
1
2
3
5
4
7
8
3
2
5
4
1
6
Door Operator Parts
KEY
NO.
PART NO. DESCRIPTION KEY
NO.
PART NO. DESCRIPTION
1 71-199010 Emergency release sash chain and
S-hooks (2)
2 02-103 Three-button Control Station
3 041A6104 Cable tension monitor
4 041A5034 Safety Reversing Sensor kit (receiving
and sending sensors) with 2-conductor
bell wire attached
5 041B6228 Mounting bracket
6 041A5266-3 Safety reversing sensor brackets (2)
7 041D8615 Collar
8 K002D2085 LMi5 Dock Door Operator Interface
NOT SHOWN
114A5186 Owner’s manual
KEY
NO.
PART NO. DESCRIPTION KEY
NO.
PART NO. DESCRIPTION
1 050DCDDOWF Logic Board
2 041B8861 Travel Module with Wire Harness
3 041C0296 Transformer
4 041D1624-2 Motor
5 041D0190 Power cord
6 041D9042 Cover
NOT SHOWN
041D9044 Battery Cover and Logic Board Cover
31
myQ
®
LED Remote
Light:
Wireless light that can
program to the door
operator or a remote
control.
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
827LM
811LM
813LM
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
Battery Backup:
Provides backup power
to the door operator.
The battery has enough
power for 30 hours of
standby power or up
to 20 cycles over a 24
hour period.
485LM
Alternate Mounting Kit:
This kit allows door operator
to be mounted below the
torsion bar in the case where
the torsion bar is not round
or the normal mounting area
is obstructed.
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
480LM
MAX accessories
Compatible with LiftMaster door operators
manufactured since 1993.
myQ
®
Accessories
Commercial Accessories
STANDARD Accessories
Accessories
Single Button Security+
2.0 Remote Control:
Includes visor clip.
891LM
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
3-Button Security+ 2.0
Remote Control:
Includes visor clip.
893LM
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
3-Button MAX Remote Control:
Includes visor clip.
893MAX
Automatic Door Lock:
The automatic door
lock is used to prevent
the door from being
manually opened once
the door is fully closed.
Plug-In Power Supply:
Required by the LC-36A
light curtain
Single-Button Encrypted
DIP Remote Control
Three Button Open
Close Stop Remote
Control
Light Curtain:
An entrapment
protection device that
forms a cross-pattern
of invisible light
beams for maximum
entrapment protection.
Broche de visera
para control remoto
Control remoto de 3 botones
modelo 893MAX (1)
Luz LED remota myQ
modelo 827LM
(Luz del abre-puertas de garaje)
con bolsa de piezas
Cable del timbre de
2 conductores, Blanco
y Blanco/Rojo
Abre-puertas de garaje
Monitor de tensión del cable con cables
de timbre de 2 conductores, Verde/Blanco
Mensula
Collar con
tornillos
de fijación
Ménsulas para sensor de seguridad (2)
Etiquetas de
seguridad y literatura
Protector System (2)
Sensores de seguridad de
reversa (1 emisor y 1
receptor) con cable de timbre
de 2 conductores, (Blanco y
Blanco/Negro) conectado
Seguro de puerta de garaje automático
modelo 841LM con cable de timbre de 2
conductores blanco y blanco/negro y conector
NOTA: Los seguros de puerta de 24 V de
los modelos antiguos no son compatibles
Smart Control Panel
®
modelo 880LMW
Batería modelo 485LM
Agrafe de pare-soleil
d’télécommande
Télécommande haut de
gamme à 3 boutons,
modèle 893MAX (1)
Lampe à DEL télécommandée
myQ de modèle 827LM
(lampe d’ouvre-porte de garage)
avec sac de quincaillerie
Fil de sonnerie blanc et
blanc/rouge à 2
conducteurs
Ouvre-porte de garage
Moniteur de tension de câble avec fils
d'appel à deux conducteurs vert/blanc
Support de montage
Embase avec
vis de pression
Support de capteur de sécurité (2)
Étiquettes de sécurité
et documentation
Protector System
(2) Capteurs d'inversion de
sécurité (1 oeil de transmission
et 1 oeil de réception) avec fil de
sonnerie blanc et blanc/noir à
deux conducteurs fixé
Smart Control Panel
®
modèle 880LMW
Batterie modèle 485LM
Serrure automatique de porte de garage
Modèle 841LM avec fil de sonnerie à deux
conducteurs blanc et blanc/noir et
connecteur
REMARQUE : Les vieux modèles de serrure
de porte de 24 V sont incompatibles.
Remote Control
Visor Clip
3-Button Premium
Remote Control
Model 893MAX (1)
myQ Remote LED Light
Model 827LM
(Garage Door Opener Light)
with Hardware Bag
Automatic Garage Door Lock Model 841LM
with 2-Conductor White and White/Black
Bell Wire with Connector
NOTE: Older model 24V door locks
are incompatible
2 Conductor Bell Wire
White and White/Red
Garage Door Opener
Cable Tension Monitor with
2-Conductor Green/White Bell Wires
Mounting Bracket
Collar with
Set Screws
Safety Reversing Sensor Bracket (2)
The Protector System
(2) Safety Reversing Sensors
(1 Sending Sensor and
1 Receiving Sensor) with
2-Conductor White and
White/Black Bell Wire attached
Safety Labels
and Literature
Smart Control Panel
®
Model 880LMW
Battery Model 485LM
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
841LM
100MAPS
LC-36A
Address repair parts to:
LiftMaster
2850 E. Drexel Rd., Suite #180
Tucson, AZ 85706
For installation and service information call:
1-800-528-9131
Or visit us online at:
LiftMaster.com
Before calling, please have the model number of the door operator. If you are calling about a troubleshooting issue, it is
recommended that you have access to your door operator while calling. If you are ordering a repair part please have the
following information: part number, part name, and model number.
Contact Information
STOP!
This door operator WILL NOT work until the safety reversing sensors are properly installed and aligned.
© 2019, LiftMaster
All Rights Reserved
114A5186B
Wi-Fi
®
is a registered trademark of Wi-Fi Alliance.
