This garage door opener 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.
When you see these Safety Symbols and Signal Words on
the following pages, they will alert you to the possibility of
Mechanical
Electrical
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 garage
door and/or the garage door opener if you do not comply
with the cautionary statements that accompany it. Read
them carefully.
2
Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
• Complete the following test to make sure your garage
door is balanced and is not sticking or binding:
1. Lift the door about halfway as shown. Release the
door. If balanced, it should stay in place, supported
entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS 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.
• NEVER try to loosen, move or adjust garage 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
garage door BEFORE installing and operating garage door
opener to avoid entanglement.
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating the
opener.
• ONLY operate garage door opener at 120V, 60 Hz to avoid
malfunction and damage.
Sectional Door
One-Piece Door
Carpenter’s
Level (Optional)
Drill
2
1
Tape Measure
3/16", 5/16" and
5/32" Drill Bits
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as illustrated
below.
Pencil
Hack Saw
Wire Cutters
Claw Hammer
Pliers
Stepladder
1/2" and 7/16" Sockets
and Wrench
Screwdriver
Adjustable End Wrench
3
Planning
Access
Door
Safety
Reversing Sensor
Safety
Reversing Sensor
Slack in chain tension is normal when
garage door is closed.
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
Safety Reversing Sensor
Support bracket &
fastening hardware
is required.
See page 12.
— — — — — — — —
Header Wall
FINISHED CEILING
Torsion
Spring
Extension
Spring
OR
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm)
Access
Door
Wallmounted
Door
Control
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 19 for details.
Motor Unit
OR
One-Piece Door-Extension Spring
Header Wall
Door
Track
Slack in chain tension
is normal when
garage door is closed.
Vertical
Centerline
of Garage Door
Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to
your installation. Additional materials may be required. You may find it helpful to refer back to this page and the
accompanying illustrations as you proceed with the installation of your opener.
SECTIONAL DOOR INSTALLATION
ONE-PIECE DOOR WITHOUT TRACK
Slack in chain tension
is normal when
Safety
Reversing Sensor
Header
Wall
Gap between floor and bottom of
door must not exceed 1/4" (6 mm)
garage door is closed.
FINISHED CEILING
Support bracket
& fastening
hardw
are is req
See pag
Wallmounted
Door
Control
Safety
Reversing Sensor
Access
Door
e 12.
uired.
Motor Unit
ONE-PIECE DOOR WITH TRACK
4
Carton Inventory
Your garage door opener is packaged in two cartons which
contain the motor unit and all parts illustrated below.
Accessories will depend on the model purchased.
LOCK
L GI HT
Smart Control Panel™
Motor Unit with Light Lenses
Y
CEILING MOUNT ONL
UP
Header Bracket
SECURITY
3-Button Remote Control
Model 373P (1)
Model 373PC (1)
®
:
If anything is missing, carefully check the packing material.
Parts may be stuck in the foam. Hardware for installation
is also listed below.
To avoid installation difficulties, do not run the garage
door opener until instructed to do so.
• Remove the bolt and lock nut from the top of the motor
unit.
• Place rail onto the bolt mounted on the motor unit and
align the back hole with the hole in the top of the unit.
• Fasten rail with the washered bolt and lock nut
previously removed. Tighten securely. Remember to
use only these bolts/fasteners! Any other bolts/
fasteners will cause serious damage to the opener.
• Cut tape from T-rail, chain and styrofoam.
• REMOVE STYROFOAM.
ASSEMBLY STEP 2
Attach the Chain Spreader
• Attach chain spreader to the motor unit with two screws.
• Position chain over chain spreader and into the slot of
the spreader. Wrap chain around the sprocket. If
necessary, loosen the outer nut on the trolley to obtain
more chain slack.
To avoid SERIOUS damage to garage door opener, use ONLY
those bolts/fasteners mounted in the top of the opener.
To avoid possible SERIOUS INJURY to fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach chain spreader BEFORE operating.
6
ASSEMBLY STEP 3
WARNING
WARNING
WARNINGWARNING
Tighten the Chain
• Spin the inner nut and lock washer down the trolley
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/2" (13 mm) above
the base of the rail at its midpoint, re-tighten the inner
nut to secure the adjustment.
Sprocket noise can result if chain is too loose.
When installation is complete, you may notice some chain
droop with the door closed. This is normal. If the chain
returns to the position shown in Figure 2 when the door is
open, do not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the
emergency release handle to disconnect trolley before
adjusting chain. You may notice loosening of chain after
Adjustment Step 3 (Test the Safety Reversal System).
Check for proper tension and readjust chain if necessary.
Then repeat Adjustment Step 3.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.
Figure 1
To Tighten Outer Nut
Trolley
Figure 2
Chain
Base of Rail
Outer Nut
Mid Length of Rail
Lock
Washer
1/2" (13 mm)
Inner Nut
To Tighten
Inner Nut
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND
INSTRUCTIONS.
2. Install garage door opener ONLY on properly balanced and
lubricated garage 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 opener.
4. Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing opener to avoid entanglement.
5. Install garage door opener 7 feet (2.13 m) or more above
floor.
6. Mount emergency release handle 6 feet (1.83 m) above floor.
7. NEVER connect garage door opener to power source until
instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing opener. They could be caught in
garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door.
• out of reach of children at minimum height of 5 feet
(1.5 m).
• away from ALL moving parts of the door.
10. Place entrapment warning label on wall next to garage door
control.
11. Place manual release/safety reverse test label in plain view
on inside of garage door.
12. Upon completion of installation, test safety reversal system.
Door MUST reverse on contact with a 1-1/2" (3.8 cm) high
object (or a 2x4 laid flat) on the floor.
7
INSTALLATION STEP 1
Header Wall
Sectional door with curved track
Highest Point
of Travel
Door
2" (5 cm)
One-piece door with horizontal track
Door
Track
Header Wall
Highest Point
of Travel
2" (5 cm)
Track
Header Wall
Vertical Centerline
of Garage Door
Level
(optional)
2x4
2x4
Structural
Supports
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Unfinished
Ceiling
Door
Jamb
Hardware
One-piece door without track:
jamb hardware
8" (20 cm)
Highest
Point
of Travel
Door
Pivot
8" (20 cm)
One-piece door without track:
pivot hardware
Highest
Point
of Travel
Header Wall
Header Wall
Determine the Header Bracket
Location
To prevent possible SERIOUS INJURY or DEATH:
• Header 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.
• Concrete anchors MUST be used if mounting header bracket
or 2x4 into masonry.
• NEVER try to loosen, move or adjust garage door, springs,
cables, pulleys, brackets, or their hardware, ALL of which
are under EXTREME tension.
• ALWAYS 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 right of the door center only if a
torsion spring or center bearing plate is in the way;
or you can attach it to the ceiling (see page 9) 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 9.
3. Open your door to the highest point of travel as shown.
Draw an inter secting horizontal line on the header wall
above the high point:
• 2" (5 cm) above the high point for sectional door and
one-piece door with track.
• 8" (20 cm) above the high point for one-piece door
without track.
This height will provide travel clearance for the top edge
of the door.
NOTE: If the total number of inches exceeds the height
available in your garage, use the maximum height
possible, or refer to page 9 for ceiling installation.
8
INSTALLATION STEP 2
Lag Screws
5/16"-9x1-5/8"
Highest Point of
Garage Door Travel
Vertical
Centerline of
Garage Door
Header
Wall
Garage
Door
UP
CEILING MOUNT ONLY
Wall Mounting Holes
Optional
Wall Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
U
P
C
E
IL
IN
G
M
O
U
N
T O
N
L
Y
Door Spring
Header
Bracket
2x4
Structural
Support
Vertical
Centerline of
Garage Door
Horizontal
Line
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
UP
Lag Screws
5/16"-9x1-5/8"
Garage Door
Vertical
Centerline
of Garage Door
Header Wall
– Finished Ceiling –
Header
Bracket
6" (15 cm)
Maximum
Vertical
Centerline
of Garage Door
Door
Spring
Install the Header Bracket
You can attach the header bracket either to the wall above
the garage door, or to the ceiling. Follow the instructions
which will work best for your particular requirements. Do
not install the header bracket over drywall. If installing
into masonry, use concrete anchors (not provided).
WALL HEADER BRACKET INSTALLATION
• Center the bracket on the vertical centerline with the
bottom edge of the bracket on the horizontal line as
shown (with the arrow pointing toward the ceiling).
• Mark the vertical set of bracket holes (do not use the
holes designated for ceiling mount). Drill 3/16" pilot
holes and fasten the bracket securely to a structural
support with the hardware provided.
HARDWARE SHOWN ACTUAL SIZE
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as shown.
• Center the bracket on the vertical mark, no more than
6" (15 cm) from the wall. Make sure the arrow is
pointing toward the wall. The bracket can be mounted
flush against the ceiling when clearance is minimal.
• Mark the side holes. Drill 3/16" pilot holes and fasten
bracket securely to a structural support with the
hardware provided.
Lag Screw
5/16"-9x1-5/8"
9
Header
Bracket
Chain
Pulley
Bracket
Temporary
Support
Header Wall
Garage
Door
Clevis Pin
5/16"x2-3/4"
Ring Fastener
Header Bracket
Chain
Pulley
Bracket
T-Rail
INSTALLATION STEP 3
Attach the Rail to the Header Bracket
• 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’ll need
help. Have someone hold the opener securely on a
temporary support to allow the rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin
5/16"x2-3/4"
10
Ring Fastener
INSTALLATION STEP 4
Rail
Door
2x4 is used to determine
the correct mounting height
from ceiling.
Top of Motor Unit
Header
Bracket
Top of Door
2x4 is used to determine
the correct mounting height
from ceiling.
Position the Opener
Follow instructions which apply to your door type as
illustrated.
SECTIONAL DOOR OR ONE-PIECE DOOR WITH
TRACK
A 2x4 laid flat is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 laid flat on
the top section beneath the rail.
• If the top section or panel hits the trolley when you raise
the door, pull down on the trolley release arm to
disconnect inner and outer sections. Slide the outer
trolley toward the motor unit. The trolley can remain
disconnected until Installation Step 12 is completed.
To prevent damage to garage door, rest garage door opener
rail on 2x4 placed on top section of door.
Trolley
Release Arm
ENGAGED
RELEASED
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal door-torail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 on its side
on the top section of the door beneath the rail.
• The top of the door should be level with the top of the
motor unit. Do not position the opener more than 4"
(10 cm) above this point.
11
INSTALLATION STEP 5
Hang the Opener
Three representative installations are shown. Yours may
be different. Hanging brackets should be angled (Figure 1)
to provide rigid support. On finished ceilings (Figure 2 and
Figure 3), attach a sturdy metal bracket to structural
supports before installing the opener. This bracket and
fastening hardware are not provided.
1. Measure the distance from each side of the motor unit
to the structural support.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with 5/16"18x1-7/8" lag screws.
5. Fasten the opener to the hanging brackets with 5/16"18x7/8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the door
(or in line with the header bracket if the bracket is not
centered above the door).
7. Remove the 2x4. Operate the door manually. If the door
hits the rail, raise the header bracket.
8. Grease the top and underside of the rail surface where
the trolley slides with rail grease.
NOTE: DO NOT connect power to opener at this time.
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.
Locate door control within sight of door, at a minimum
height of 5' (1.5 m) where small children cannot reach,
away from moving parts of door and door hardware. If
installing into drywall, drill 5/32" holes and use the anchors
provided. For pre-wired installations (as in new home
construction), it may be mounted to a single gang box
(Figure 1).
NOTE: The functional temperature range of the door
control is between -4° F (-20° C) and 122° F (50° C).
Scroll speed of display is slower at lower temperatures
although the door control remains fully functional.
CAUTION: Continuous exposure of the door control to
temperatures below -22° F (-30° C) may damage the LCD
screen.
SPECIAL NOTE: Only one 398LMC can be connected to
each garage door opener. If additional wall controls are
desired to operate the same garage door opener, it is
recommended to use model 378LMC wireless wall control
as the secondary door control.
1. Strip 7/16" (11 mm) of insulation from one end of bell
wire and connect to the two screw terminals on back of
door control by color: white wire to the W (2) and white/
red wire to the R (1) (Figure 2).
2. Remove push bar cover by gently prying at the lower/
middle portion of the cover with a small flat-head
screwdriver. Fasten with 6AB x 1-1/4" self-tapping
screws (drywall installation) or 6-32 x 1" machine
screws (into gang box) as follows:
• Install bottom screw, allowing 1/8" (3 mm) to protrude
above wall surface.
• Position bottom of door control on screw head and
slide down to secure. Adjust screw for snug fit.
• Drill and install top screw with care to avoid cracking
plastic housing. Do NOT overtighten.
• Replace cover by inserting top tabs first and then snap
cover in place.
3. (For standard installations ONLY) Run bell wire up
wall and across ceiling to motor unit. Use insulated
staples to secure wire in several places. Do NOT pierce
wire with a staple, creating a short or open circuit.
4. Strip 7/16" (11 mm) of insulation from end of bell wire.
Connect bell wire to the quick-connect terminals on the
motor unit: white to white and white/red to red
(Figure 2).
NOTE: If you have any trouble with the operation of the
buttons, loosen the top mounting screw. DO NOT connect
power and operate the opener at this time.The trolley will
travel to the full open position but will not return to the
close position until the sensor beam is connected and
properly aligned.
To prevent possible SERIOUS INJURY or DEATH from
electrocution:
• Be sure power is not connected BEFORE installing door
control.
• Connect ONLY to 24 VOLT low voltage wires.
To prevent possible SERIOUS INJURY or DEATH from a closing
garage door:
• Install door control within sight of garage door, out of reach
of children at a minimum height of 5 feet (1.5 m) and away
from ALL moving parts of door.
• NEVER permit children to operate or play with door control
push buttons or remote control transmitters.
• Activate door ONLY when it can be seen clearly, is properly
adjusted and there are no obstructions to door travel.
• ALWAYS keep garage door in sight until completely closed.
NEVER permit anyone to cross path of closing garage door.
HARDWARE SHOWN ACTUAL SIZE
Figure 1
REMOVE & REPLACE COVER
To Replace Insert
Top Tabs First
Push Bar Cover
LOCK
L
IGHT
LOCK
PRE-WIRED INSTALLATION
24 Volt Bell Wire
L
IGHT
Figure 2
2-Conductor
Bell Wire
R
1
(BACK VIEW)
Strip wire 7/16"
W
2
Door Control
Connections
7/16" (11 mm)
Door
Control
Terminal
Screws
Push Bar
LOCK
LOCK
Lock
Button
Light
Button
To release or insert wire,
push in tab with
screwdriver tip
Quick-Connect
Terminals
Antenna
RedGreyWhite
13
INSTALLATION STEP 7
Install the Light
• Press the release tabs on both sides of lens. Gently
rotate lens back and downward until the lens hinge is in
the fully open position. Do not remove the lens.
• Install up to a 100 watt maximum light bulb in each
socket. The light will turn ON and remain lit for
approximately 4-1/2 minutes when power is connected.
Then the lights will turn OFF.
• Reverse the procedure to close the lens.
• Use A19, standard neck garage door opener bulbs for
replacement.
NOTE: Use only standard light bulbs. The use of short
neck or speciality light bulbs may overheat the endpanel or
light socket.
To prevent possible OVERHEATING of the endpanel or light
socket:
• DO NOT use short neck or specialty light bulbs.
• DO NOT use halogen bulbs. Use ONLY incandescent.
To prevent damage to the opener:
• DO NOT use bulbs larger than 100W.
• ONLY use A19 size bulbs.
100 Watt (Max)
Standard Light Bulb
Release Tab
Lens
100 Watt (Max)
Standard Light Bulb
Hinge
INSTALLATION STEP 8
Attach the Emergency Release Rope
and Handle
• Thread one end of the rope through the hole in the top
of the red handle so “NOTICE” reads right side up as
shown. Secure with an overhand knot at least 1"
(2.5 cm) from the end of the rope to prevent slipping.
• Thread the other end of the rope through the hole in the
release arm of the outer trolley.
• Adjust rope length so the handle is 6 feet (1.83 m)
above the floor. Ensure that the rope and handle clear
the tops of all vehicles to avoid entanglement. Secure
with an overhand knot.
NOTE: If it is necessary to cut the rope, heat seal the cut
end with a match or lighter to prevent unraveling.
To prevent possible SERIOUS INJURY or DEATH from a falling
garage door:
• If possible, use emergency release handle to disengage
trolley ONLY when garage 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 handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If rope knot
becomes untied, you could fall.
Overhand
Knot
Trolley
Rope
NOTICE
Trolley
Release Arm
Emergency
Release Handle
14
INSTALLATION STEP 9
RIGHT
WRONG
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
Electrical Requirements
To avoid installation difficulties, do not run the opener
at this time.
To reduce the risk of electric shock, your garage door
opener has a grounding type plug with a third grounding
pin. This plug will only fit into a grounding type outlet. If
the plug doesn’t fit into the outlet you have, contact a
qualified electrician to install the proper outlet.
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 top of the motor unit:
• Remove the motor unit cover screws and set the cover
aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the brass
terminal; the white (neutral) wire to the screw on the
silver terminal; and the ground wire to the green ground
screw. The opener must be grounded.
• Reinstall the cover.
To avoid installation difficulties, do not run the opener
at this time.
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire:
• Be sure power is not connected to the opener, and
disconnect power to circuit BEFORE removing cover to
establish permanent wiring connection.
• Garage 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 opener is
grounded.
The safety reversing sensor must be connected and
aligned correctly before the garage door opener will
move in the down direction.
IMPORTANT INFORMATION ABOUT
THE SAFETY REVERSING SENSOR
When properly connected and aligned, the sensor will
detect an obstacle in the path of its electronic beam. The
sending eye (with an amber indicator light) transmits an
invisible light beam to the receiving eye (with a green
indicator light). If an obstruction breaks the light beam
while the door is closing, the door will stop and reverse to
full open position, and the opener lights will flash 10 times.
The units must be installed inside the garage so that the
sending and receiving eyes 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 eye lens.
The mounting brackets are designed to clip onto the track
of sectional garage doors without additional hardware.
®
Be sure power is not connected to the garage door opener
BEFORE installing the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH from a closing garage
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" (15 cm) above garage floor.
If it is necessary to mount the units 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 garage door (or door tracks, springs, hinges,
rollers or other hardware) may interrupt the beam while
the door is closing.
Facing the door from inside the garage
16
INSTALLING THE BRACKETS
Be sure power to the opener is disconnected. Install
and align the brackets so the sensors will face each other
across the garage door, with the beam no higher than 6"
(15 cm) above the floor. They may be installed in one of
three ways, as follows.
Garage door track installation (preferred) (Figure 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 in Figure 1.
If your door track will not support the bracket securely, wall
installation is recommended.
Wall installation (Figure 2 & 3):
• 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.
• If additional depth is needed, an extension bracket
(see Accessories) or wood blocks can be used.
• 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.
• Attach brackets to wall with lag screws (Not Provided).
• 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.
Floor installation (Figure 4):
• 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.
• Carefully measure and place right and left assemblies at
the same distance out from the wall. Be sure all door
hardware obstructions are cleared.
• Fasten to the floor with concrete anchors as shown.
Figure 1
Figure 2
Figure 3
DOOR TRACK MOUNT (RIGHT SIDE)
Door
Track
Lip
Sensor
Bracket
WALL MOUNT (RIGHT SIDE)
Inside
Garage
Wall
WALL MOUNT (RIGHT SIDE)
Inside
Garage
Wall
Fasten Wood Block to Wall with
Lag Screws (Not Provided)
Extension
Bracket
(See Accessories)
(Provided with
Extension Bracket)
Indicator
Light
Lens
Indicator
Light
Lens
Sensor
Bracket
Lag Screws
(Not Provided)
HARDWARE SHOWN ACTUAL SIZE
Carriage Bolt
1/4"-20x1/2"
Wing Nut
1/4"-20
Staples
17
(Provided with
Extension
Bracket)
Figure 4
Lens
FLOOR MOUNT (RIGHT SIDE)
Inside
Garage
Wall
Lens
Sensor
Bracket
Indicator
Light
Attach with
Concrete Anchors
(Not Provided)
Indicator
Light
Sensor
Bracket
Invisible Light Beam
Protection Area
Safety Reversing Sensor
Safety Reversing Sensor
Connect Wire to
Opener Quick-Connect Terminals
Bell Wire
Bell Wire
Finished
Ceiling
Quick-Connect Terminals
3. To release or insert
wire, push in tab with
screwdriver tip
1. Strip wire 7/16"
(11 mm)
2. Twist like colored
wires together
7/16"
(11mm)
Red
Grey
White
Carriage Bolt
1/4"-20x1/2"
Lens
Wing Nut
1/4"-20
SENSORS
• Slide a 1/4"-20x1/2" carriage bolt head into the slot on
each sensor. Use wing nuts to fasten sensors to
brackets, with lenses pointing toward each other across
the door. Be sure the lens is not obstructed by a bracket
extension (Figure 5).
• Finger tighten the wing nuts.
• Run the wires from both sensors to the opener. Use
insulated staples to secure wire to wall and ceiling.
• Strip 7/16" (11 mm) of insulation from each set of wires.
Separate white and white/black wires sufficiently to
connect to the opener quick-connect terminals. Twist
like colored wires together. Insert wires into quickconnect holes: white to white and white/black to grey
(Figure 6).
ALIGNING THE SAFETY REVERSING SENSORS
• Plug in the opener. The indicator lights in both the
sending and receiving eyes will glowsteadily if wiring
connections and alignment are correct.
The sending eye amber indicator light will glow regardless
of alignment or obstruction. If the green indicator light in
the receiving eye is off, dim, or flickering (and the invisible
light beam path is not obstructed), alignment is required.
• Loosen the sending eye wing nut and readjust, aiming
directly at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust sensor
until it receives the sender’s beam. When the green
indicator light glows steadily, tighten the wing nut.
Figure 5MOUNTING AND WIRING THE SAFETY REVERSING
TROUBLESHOOTING THE SAFETY REVERSING
SENSORS
1. If the sending eye indicator light does not glow steadily
after installation, check for:
• Electric power to the opener.
• A short in the white or white/black wires. These can
occur at staples, or at opener connections.
• Incorrect wiring between sensors and opener.
• A broken wire.
2. If the sending eye indicator light glows steadily but the
receiving eye indicator light doesn’t:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign either
sensor.
NOTE: When the invisible beam path is obstructed or
misaligned while the door is closing, the door will reverse.
If the door is already open, it will not close. The opener
lights will blink 10 times. See page 16.
Figure 6
18
INSTALLATION STEP 11
Vertical
Centerline
of Garage
Door
Door
Bracket
Location
Header
Bracket
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
Door
Bracket
Vertical
Centerline
of Garage Door
UP
Vertical
Reinforcement
Self-Threading
Screw
1/4"-14x5/8"
Self-Threading
Screw
1/4"-14x5/8"
Door
Bracket
Nut
5/16"-18
Bolt
5/16"-18x2"
Lock Washer
5/16"
UP
Vertical
Reinforcement
(Not Provided)
Vertical
Centerline
of Garage Door
UP
Self-Threading
Screw
1/4"-14x5/8"
Vertical
Centerline
of Garage Door
UP
Inside Edge
of Door or
Reinforcement Board
Bolt
5/16"x2"
(Not Provided)
Vertical
Centerline
of Garage
Door
Fasten the Door Bracket
Follow instructions which apply to your door type as
illustrated below or on the following page.
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.
Figure 1 shows one piece of angle iron as the horizontal
brace. For the vertical brace, 2 pieces of angle iron are
used to create a U-shaped support. The best solution is to
check with your garage door manufacturer for an opener
installation door 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 Step 12.
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" (5-10 cm)
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:
• Drill 3/16" fastening holes. Secure the door bracket
using the two 1/4"-14x5/8" self-threading screws
(Figure 2A).
• Alternately, use two 5/16" bolts, lock washers and nuts
(not provided) (Figure 2B).
Metal, insulated or light weight factory reinforced
doors:
• Drill 3/16" fastening holes. Secure the door bracket
using the self-threading screws (Figure 3).
Wood Doors:
• Use top and bottom or side to side door bracket holes.
Drill 5/16" holes through the door and secure bracket
with 5/16"x2" carriage bolts, lock washers and nuts
(not provided) (Figure 4).
NOTE: The 1/4"-14x5/8" self-threading screws are not
intended for use on wood doors.
Fiberglass, aluminum or lightweight steel garage doors WILL
REQUIRE reinforcement BEFORE installation of door bracket.
Contact your door manufacturer for reinforcement kit.
Figure 1
Figure 2B
Figure 2A
HARDWARE
SHOWN
ACTUAL SIZE
Figure 4
Figure 3
19
ONE-PIECE DOORS
Self-Threading Screw
1/4"-14x5/8"
Please read and comply with the warnings and
reinforcement instructions on the previous page. They
apply to one-piece doors also.
• Center the door bracket on the top of the door, in line
with the header bracket as shown. Mark either the left
and right, or the top and bottom holes.
• Metal Doors: Drill 3/16" pilot holes and fasten the
bracket with the 1/4"-14x5/8" self-threading screws
provided.
• Wood Doors: Drill 5/16" holes and use 5/16"x2"
carriage bolts, lock washers and nuts (not provided) or
5/16"x1-1/2" lag screws (not provided) depending on
your installation needs.
NOTE: The door bracket may be installed on the top edge
of the door if required for your installation. (Refer to the
dotted line optional placement drawing.)
Header Wall
2x4 Support
Header
Bracket
Door
Bracket
Optional
Placement
of Door
Bracket
Vertical
Centerline of
Garage Door
Finished Ceiling
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
HARDWARE SHOWN
ACTUAL SIZE
Door
Bracket
Nut
5/16"-18
Door
Bracket
Self-Threading
Screw
1/4"-14x5/8"
Top of Door
(Inside
Garage)
Top Edge
of Door
Optional
Placement
METAL DOOR
Lock
Washer
5/16"
Top of Door
(Inside
Garage)
Top Edge
of Door
For a door with no exposed framing,
or for the optional installation, use
lag screws 5/16"x1-1/2" (Not Provided)
to fasten door bracket.
20
Optional
Placement
Carriage Bolt
5/16"x2"
(Not Provided)
WOOD DOOR
INSTALLATION STEP 12
Connect Door Arm to Trolley
Follow instructions which apply to your door type as
illustrated below and on the following page.
Inner Trolley
Outer Trolley
SECTIONAL DOORS ONLY
• Make sure garage door is fully closed. Pull the
emergency release handle to disconnect the outer trolley
from the inner trolley. Slide the outer trolley back (away
from the door) about 2" (5 cm) as shown in Figures 1, 2
and 3.
• Figure 1:
– Fasten straight door arm section to outer trolley with
the 5/16"x1" clevis pin. Secure the connection with a
ring fastener.
– Fasten curved section to the door bracket in the same
way, using the 5/16"x1-1/4" clevis pin.
• Figure 2:
– Bring arm sections together. Find two pairs of holes
that line up and join sections. Select holes as far apart
as possible to increase door arm rigidity.
• Figure 3, Hole alignment alternative:
– If holes in curved arm are above holes in straight arm,
disconnect straight arm. Cut about 6" (15 cm) from the
solid end. Reconnect to trolley with cut end down as
shown.
– Bring arm sections together.
– Find two pairs of holes that line up and join with bolts,
lock washers and nuts.
• Pull the emergency release handle toward the opener at
a 45° angle so that the trolley release arm is horizontal.
Proceed to Adjustment Step 1, page 23. Trolley will
re-engage automatically when opener is operated.
Figure 1
Nuts
5/16"-18
Door Bracket
Ring
Fastener
Door
Bracket
Clevis Pin
5/16"x1-1/4"
Lock
Washers
5/16"
Curved
Door Arm
Bolts
5/16"-18x7/8"
Emergency
Release
Handle
Straight
Door Arm
Clevis Pin
5/16"x1"
HARDWARE SHOWN ACTUAL SIZE
Nut 5/16"-18
Clevis Pin
5/16"x1" (Trolley)
Lock Washer 5/16"
Clevis Pin
5/16"x1-1/4" (Door Bracket)
Ring Fastener
Hex Bolt
5/16"-18x7/8"
Figure 2
Figure 3
21
Nuts
5/16"-18
Lock
Washers
5/16"
Cut This End
Bolts
5/16"-18x7/8"
ALL ONE-PIECE DOORS
Nuts
5/16"-18
Lock
Washers
5/16"
Ring
Fastener
Straight
Arm
Bolts
5/16"-18x7/8
Door
Bracket
Clevis Pin
5/16"x1-1/4"
Curved
Door Arm
Door Arm
Door Arm
Connector Hole
Closed
Door
Outer Trolley
Emergency Release Handle
Inner Trolley
Outer Trolley
Open Door
Door Arm
Correct Angle
Door with
Backward Slant (Incorrect)
Inner Trolley
1. Assemble the door arm, Figure 4:
• Fasten the straight and curved door arm sections
together to the longest possible length (with a 2 or 3
hole overlap).
• With the door closed, connect the straight door arm
section to the door bracket with the 5/16"x1-1/4" clevis
pin.
• Secure with a ring fastener.
2. Adjustment procedures, Figure 5:
• On one-piece doors, before connecting the door arm
to the trolley, the travel limits must be adjusted. Limit
adjust ment screws are located on the left side panel
as shown on page 23. Follow adjustment procedures
below.
• Open door adjustment: decrease UP travel limit
- Turn the UP limit adjustment screw counter-clockwise
4 turns.
- Press the Door Control push button. The trolley will
travel to the fully open position.
- Manually raise the door to the open position (parallel
to the floor), and lift the door arm to the trolley. The
arm should touch the trolley just in back of the door
arm connector hole. Refer to the fully open trolley/
door arm positions in the illustration. If the arm does
not extend far enough, adjust the limit further. One
full turn equals 3" (7.5 cm) of trolley travel.
• Closed door adjustment: decrease DOWN travel
limit
- Turn the DOWN limit adjustment screw clockwise
4 complete turns.
Figure 4
- Press the Door Control push button. The trolley will
travel to the fully closed position.
- Manually close the door and lift the door arm to the
trolley. The arm should touch the trolley just ahead of
the door arm connector hole. Refer to the fully closed
trolley/door arm positions in the illustration. If the arm
is behind the connector hole, adjust the limit further.
One full turn equals 3" (7.5 cm) of trolley travel.
3. Connect the door arm to the trolley:
• Close the door and join the curved arm to the
connector hole in the trolley with the remaining clevis
pin. It may be necessary to lift the door slightly to make
the connection.
• Secure with a ring fastener.
• Run the opener through a complete travel cycle. If the
door has a slight "backward" slant in full open position
as shown in the illustration, decrease the UP limit until
the door is parallel to the floor.
NOTE: When setting the up limit on the following page, the
door should not have a "backward" slant when fully open
as illustrated below. A slight backward slant will cause
unnecessary bucking and/or jerking operation as the door
is being opened or closed from the fully open position.
Figure 5
22
ADJUSTMENT STEP 1
Adjust the UP and DOWN Travel Limits
Limit adjustment settings regulate the points at which the
door will stop when moving up or down.
To operate the opener, press the Door Control push bar.
Run the opener through a complete travel cycle.
• Does the door open and close completely?
• Does the door stay closed and not reverse
unintentionally when fully closed?
If your door passes both of these tests, no limit
adjustments are necessary unless the reversing test fails
(Adjustment Step 3, page 25).
Adjustment procedures are outlined below. Read the
procedures carefully before proceeding to Adjustment Step
2. Use a screwdriver to make limit adjustments. Run the
opener through a complete travel cycle after each
adjustment.
NOTE: Repeated operation of the opener during
adjustment procedures may cause the motor to overheat
and shut off. Simply wait 15 minutes and try again. If
anything interferes with the door’s upward travel, it will
stop. If anything interferes with the door’s downward travel
(including binding or unbalanced doors), it will reverse.
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
• Incorrect adjustment of garage door travel limits will
interfere with proper operation of safety reversal system.
• If one control (force or travel limits) is adjusted, the other
control may also need adjustment.
• 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.
To prevent damage to vehicles, be sure fully open door
provides adequate clearance.
Cover
Protection
Bolt
2-4"
(5-10 cm)
Left Side Panel
HOW AND WHEN TO ADJUST THE LIMITS
• If the door does not open completely but opens at
least five feet (1.5 m):
Increase up travel. Turn the UP limit adjustment screw
clockwise. One turn equals 3" (7.5 cm) of travel.
NOTE: To prevent the trolley from hitting the cover
protection bolt, keep a minimum distance of 2-4" (5-10
cm) between the trolley and the bolt.
• If door does not open at least 5 feet (1.5 m):
Adjust the UP (open) force as explained in Adjustment
Step 2.
• If the door does not close completely:
Increase down travel. Turn the down limit adjustment
screw counterclockwise. One turn equals 3" (7.5 cm) of
travel.
If door still won't close completely and the trolley bumps
into the pulley bracket (page 4), try lengthening the door
arm (page 21) and decreasing the down limit.
• If the opener reverses in fully closed position:
Decrease down travel. Turn the down limit adjustment
screw clockwise. One turn equals 3" (7.5 cm) of travel.
Limit Adjustment Screws
ADJUSTMENT LABEL
• If the door reverses when closing and there is no
visible interference to travel cycle:
If the opener lights are flashing, the Safety Reversing
Sensors are either not installed, misaligned, or
obstructed. See Troubleshooting, page 18.
Test the door for binding: Pull the emergency release
handle. Manually open and close the door. If the door is
binding or unbalanced, call for a trained door systems
technician. If the door is balanced and not binding,
adjust the DOWN (close) force. See Adjustment Step 2.
23
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