Chamberlain ATS 211X 1/2 HP User manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
COMMERCIAL DOOR OPENER
Model ATS 211X 1/2 HP
For Residential And Light Duty Commercial Use
Install on Sectional Doors Only
Owner’s Manual
■Please read this manual and the enclosed safety materials carefully!
■Fasten the manual near the garage door after installation.
■The door WILL NOT CLOSE unless the Protector System®is connected and
properly aligned.
■Periodic checks of the opener are required to ensure safe operation.
■The model number label is located on the front panel of your opener.
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UP
FORCE DOWN
FORCE
®

2
Introduction 2-5
Safety symbol and signal word review........................2
Preparing your garage door ........................................3
Tools needed...............................................................3
Planning .....................................................................4
Carton inventory..........................................................5
Hardware inventory .....................................................5
Assembly 6-7
Attach the rail to the motor unit...................................6
Attach the chain to the sprocket and install
the rail support bracket .............................................6
Tighten the chain.........................................................7
Installation 7-19
Installation safety instructions .....................................7
Determine the header bracket location .......................8
Install the header bracket............................................9
Attach the rail to the header bracket.........................10
Position the opener ...................................................11
Hang the opener........................................................11
Install the door control...............................................12
Install the light ...........................................................13
Attach the emergency release rope and handle .......13
Electrical requirements..............................................14
Install the Protector System®................................15-17
Fasten the door bracket ............................................18
Connect the door arm to the trolley ..........................19
Adjustment 20-22
Adjust the travel limits ...............................................20
Adjust the force .........................................................21
Test the safety reversal system.................................22
Test the Protector System®........................................22
Operation 23-25
Operation safety instructions.....................................23
Using your garage door opener ................................23
Using the wall-mounted door control ........................24
To open the door manually........................................24
Care of your garage door opener..............................24
Having a problem? ....................................................25
Programming 26-28
3-Channel remote controls (Optional).......................26
Multi-Function door control (Optional).......................27
To add or change a Keyless Entry PIN(Optional) ....28
Repair Parts 29-30
Rail assembly parts...................................................29
Installation parts ........................................................29
Motor unit assembly parts.........................................30
Accessories 31
Repair Parts and Service 32
Warranty 32
TABLE OF CONTENTS
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 garage door and/or the garage door opener if
you do not comply with the cautionary statements
that accompany it. Read them carefully.
INTRODUCTION
Safety Symbol
and Signal Word Review
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.
Mechanical
Electrical
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING

3
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.
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.
• This product is for use on sectional garage doors only.
SERIOUS INJURY could result from the use of this
product on one piece garage doors.
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.
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below.
WARNING
CAUTION WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING
Pliers
Wire Cutters
ClawHammer
Hack Saw
Screwdriver Adjustable End Wrench
1/2" and 7/16" Sockets
and Wrench
Drill
Tape Measure
2
1
Stepladder
Pencil
3/16", 5/16" and
5/32" Drill Bits
Carpenter's
Level (Optional)
Sectional Door

Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 18 for details.
Support bracket &
fastening hardware
is required.
See page 11.
— — — — — — — —
Header Wall
Safety
Reversing
Sensor
Gap between floor and bottom
of door must not exceed 1/4" (6 mm)
FINISHED CEILING
Extension Spring
Torsion Spring Access Door
OR
Slack in chain tension
is normal when
garage door is closed.
Vertical
Centerline of
Garage Door
Wall-
mounted
Door
Control
4
SECTIONAL DOOR INSTALLATION
Planning
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.
Chain Pulley
Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Chain
CLOSED POSITION
Rail
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and
the floor MUST NOT exceed 1/4". Otherwise, the safety
reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
WARNING
CAUTION WARNING
WARNING

5
Straight
Door Arm
Door Bracket Plate
Door Bracket
Safety Labels
and Literature
"C" Wrap (2)
2 -Conductor Bell Wire
White & White/Red
Curved Door Arm
Rail
Styrofoam
Chain
Pulley Bracket
Trolley
Chain
Safety Reversing Sensor
Mounting Bracket
With Slot (2)
Safety Reversing Sensor
Mounting Bracket
With Square Holes (2)
Mounting Hardware
(Rail Support Bracket)
Header Bracket with
Clevis Pin and Fastener
UP
CEILINGMOUNT ONLY
Lighted Door
Control Button
The Protector System®
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Rail Support
Bracket
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UP
FORCE DOWN
FORCE
Motor Unit
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. If anything is missing, carefully check the
packing material. Parts may be stuck in the foam.
Hardware for installation is also listed below.
Carton Inventory
Assembly Hardware
Washered Screw, 5/16"-18x1/2"
(2) (Mounted in Opener)
Hex Screw 1/4"-20x5/8" (2)
Lock Washer 1/4"-20x5/8" (2)
Screw #8-32x3/8" (1)
Washered Screw
5/16"-18x1/2" (2)
Installation Hardware
Hex Screw 5/16"-18x7/8" (4)
Nut 5/16"-18 (4)
Lock Washer 5/16" (4)
Rail Grease
Lag Screw 5/16"-9x1-5/8" (4)
Screw 6ABx1-1/2" (2)
Handle
Ring Fastener (3)
Self-Threading Screw
1/4"-14x5/8" (2)
Insulated Staples (10)
Drywall Anchors (2)
Clevis Pin 5/16"x2-3/4" (1)
Clevis Pin 5/16"x1" (2)
Rope
Hardware for Safety
Reversing Sensor
Lag Screw 1/4x1-1/2" (4)
Carriage Bolt 1/4"-20x1/2" (4)
Lock Nut 1/4"-20 (4)
Wing Nut (2)
Hex Screw 1/4-20x1-1/2" (2)
Screw #10-32x3/8" (4)
Lock Nut #10x32 (4)
Insulated Staples (20)
HARDWARE INVENTORY

6
ASSEMBLY STEP 1
Attach the Rail to the Motor Unit
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
• Place the opener on packing material to protect
the cover.
• Remove the (2) 5/16"-18x1/2" washered bolts
mounted in the top of the motor unit.
• Position rail at a 45˚ angle to opener so one hole in
rail and motor unit line up.
• Thread one of the washered bolts part way in.
Use only these bolts! Use of any other bolts will
cause serious damage to door opener.
• Align rail over sprocket. Cut tape from rail.
Chain
Spreader
Sprocket
Chain
USE ONLY THIS
TYPE AND SIZE
BOLT
Opener
Washered Bolt
5/16"-18x1/2"
Rail
To avoid SERIOUS damage to opener, ONLY use
bolts/fasteners mounted in top of motor unit.
WARNING
CAUTION
WARNING
WARNING
ASSEMBLY STEP 2
Attach the Chain to the Sprocket
and Install the Rail Support Bracket
• Guide the chain over chain spreader and opener
sprocket. If necessary, loosen the outer nut on the
trolley to obtain more chain slack. Insert the second
washered bolt. Use only the bolts previously
removed from opener.
• Tighten both bolts securely through the rail into the
opener as shown.
• Position the rail support bracket on the opener.
• Attach the bracket to the rail with 1/4"-20x5/8"
hex screws and lock washers. Do not overtighten.
• Attach the bracket to the opener by inserting a
5/16"-18x1/2" washered bolt through a hole in each
side flange and a matching hole in the bracket.
Complete the connection by inserting the
#8-32x3/8" screw through the back flange and the
hole in rail support.
Proceed to Assembly Step 3.
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep hand clear of sprocket while operating
opener.
• Securely attach rail support bracket BEFORE operating.
WARNING
CAUTION WARNING
WARNING
Hex bolts
with Lock Washers
1/4"-20x5/8"
Rail Support
Bracket
Washered Bolt
5/16"-18x1/2"
Washered Bolt
5/16"-18x1/2"
Screw
#8-32x3/8"
Opener
Side Flange
Opener
Back Flange
Washered Bolt
5/16"-18x1/2"
Hex Bolt
1/4"-20x5/8" Screw #8-32x3/8"
Lock Washer
HARDWARE SHOWN ACTUAL SIZE

7
ASSEMBLY STEP 3
Tighten the Chain
• Spin the inner nut and lock washer down the
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown. As you turn the nut, keep the chain
from twisting.
•When the chain is approximately 1/2" 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 either too
loose or too tight.
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 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 have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
To Tighten
Inner Nut
Lock
Washer
To Tighten Outer NutInner Nut
Trolley
Chain
Base of Rail
1/2" (1.27 cm)
Outer Nut
INSTALLATION
IMPORTANT INSTALLATION INSTRUCTIONS
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 or more above floor.
6. Mount emergency release handle 6 feet 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
• 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"
high object (or a 2x4 laid flat) on the floor.
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNING

8
INSTALLATION STEP 1
Determine the Header Bracket
Location
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
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".)
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 intersecting horizontal line on the
header wall 2" above the high point. This height
will provide travel clearance for the top edge of the
door.
Proceed to Step 2, page 9.
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.
Header Wall
Sectional door with curved track
Highest Point
of Travel
Door
2" (5 cm) Track
Sectional door
with curved
track
Header Wall
Vertical Centerline
of Garage Door
Level
(optional)
2x4
2x4
Structural
Supports
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Unfinished
Ceiling
WARNING
CAUTION WARNING
WARNING

9
INSTALLATION STEP 2
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.
Lag Screw
5/16"-9x1-5/8"
HARDWARE SHOWN ACTUAL SIZE
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.
Youmust use lag screws
to mount the header bracket.
UP
CEILING MOUNT ONLY
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.
Youmust 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
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more
than 6" from the wall. Make sure the arrow is
pointing toward the wall. The bracket can be
mounted flush against the ceiling when clearance
is minimal.
• Mark the side holes. Drill 3/16" pilot holes and
fasten bracket securely to a structural support with
the hardware provided.

10
Clevis Pin
5/16"x2-3/4" Ring Fastener
Header
Bracket
Chain
Pulley
Bracket
Temporary
Support
Header Wall
Garage
Door
Rail
Clevis Pin
5/16"x2-3/4"
Ring Fastener
Header Bracket
Chain
Pulley
Bracket
Rail
HARDWARE SHOWN ACTUAL SIZE
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 chain pulley bracket against the
header bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.