Chamberlain C2102 User manual

Installation Manual
Chain Drive Garage Door Opener
Model C2102
FOR RESIDENTIAL USE ONLY
PREǫPROGRAMMED REMOTE
CONTROL INCLUDED
To register your garage door opener to receive
updates and offers from Chamberlain, visit
chamberlain.registria.com or use the icon below:
www.chamberlain.com
1. Take a photo of the camera icon including
the points ( ).
2. Send it in by texting the photo to 71403 (US).
• Please read this manual and the enclosed safety materials carefully!
• Fasten the manual near the garage door after installation.
• The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned.
• Periodic checks of the garage door opener are required to ensure safe operation.
• The model number label is located on the back panel of your garage door opener.
• This garage door opener is compatible with myQ® and Security+2.0® accessories.
• DO NOT install on a one-piece door if using devices or features providing unattended close.
Unattended devices and features are to be used ONLY with sectional doors.

2
ContentsPreparation 3
Assembly 7
Installation 12
Install the Door Control 22
Install the Protector System® 24
Connect Power 28
Adjustments 30
Operation 33
Using your Garage Door Opener 33
Using your Door Control 34
Remote Control and Keyless Entry 34
HomeLink® 34
Erase the Memory 35
To Open the Door Manually 35
Maintenance 36
Troubleshooting 37
Warranty 39
Automatic Garage Door Opener Safety & Maintenance Guide 40
Repair Parts 42
Rail Assembly Parts 42
Installation Parts 42
Garage Door Opener Parts 43 SafetySymbolandSignalWordReviewThis 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
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.
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
UnattendedOperationThe Timer-to-Close (TTC) feature, the myQ® App, and myQ® Garage Door and Gate Monitor are examples of
unattended close and are to be used ONLY with sectional doors. Any device or feature that allows the door to
close without being in the line of sight of the door is considered unattended close. The Timer-to-Close (TTC)
feature, the myQ® App, and any other myQ® devices are to be used ONLY with sectional doors.
The images throughout this manual are for reference only and your product may
look different.

3
ChecktheDoorTo prevent possible SERIOUSINJURYor DEATH:
lALWAYS call a trained door systems technician if garage door binds, sticks, or is out of balance. An
unbalanced garage door may NOT reverse when required.
lNEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their
hardware, ALLof which are under EXTREME tension.
lDisable ALLlocks and remove ALLropes connected to garage door BEFORE installation and operating
garage door opener to avoid entanglement.
lDO NOT install on a one-piece door if using devices or features providing unattended close.
Unattended devices and features are to be used ONLY with sectional doors.
To prevent damage to garage door and opener:
lALWAYS disable locks BEFORE installing and operating the opener.
lONLY operate garage door opener at 120V, 60Hz to avoid malfunction and damage.
Before you begin:
1. Disable locks and remove any ropes connected to the garage door.
2. Lift the door halfway up. Release the door. If balanced, it should stay in place, supported entirely by its
springs.
3. Raise and lower the door to check for binding or sticking. If your door binds, sticks, or is out of balance,
call a trained door systems technician.
4. Check the seal on the bottom of the door. Any gap between the floor and the bottom of the door must
not exceed 1/4" (6 mm). Otherwise, the safety reversal system may not work properly.
5. The opener should be installed above the center of the door. If there is a torsion spring or center
bearing plate in the way of the header bracket, it may be installed within 4feet (1.2 m) to the left or
right of the door center. See page 13.
Torsion
Spring Extension
Spring
Preparation

4
ToolsNeeded
3/16
7/16
1/2
5/32
5/16
9/16
1/4
7/16
AdditionalItemsYouMayNeed:Survey your garage area to see if you will need any of the following items:
l(2) 2X4 Pieces of wood : May be used to fasten the header bracket to the structural supports. Also
used to position the garage door opener during installation and for testing the safety reversing
sensors.
lSupport bracket and fastening hardware: Must be used if you have a finished ceiling in your garage.
Support Brackets
Hardware x2 (each)
lExtension brackets (Model 041A5281-1) or wood blocks: Depending upon garage construction,
extension brackets or wood blocks may be needed to install the safety reversing sensor.
Extension Brackets –Ê041A5281-1
Lag screws x4 Lag screws x12
Wood Blocks
lFastening hardware: Alternate floor mounting of the safety reversing sensor will require hardware not
provided.
lDoor reinforcement: Required if you have a lightweight steel, aluminum, fiberglass or glass panel door.
lRail extension kit: Required if your garage door is more than 7 feet (2.13 m) high.
Preparation

5
CartonInventorySave the carton and packing material until the installation and adjustment is complete. Instructions for the
accessories will be attached to the accessory and are not included in this manual. The images throughout this
manual are for reference only and your product may look different.
1. Header bracket
2. Pulley
3. Door bracket
4. Curved door arm
5. Straight door arm
(Packaged inside front rail section)
6. Trolley
7. Emergency release rope and handle
8. Rail (1 front and 4 center sections)
9. Hanging brackets (2)
(Packaged inside the front rail section)
10. Garage door opener (motor unit)
11. Chain spreader with screws
12. “U” bracket
13. Chain and cable
14. The Protector System®
Safety reversing sensors with 2 conductor white and white/black wire attached: sending sensor (1),
receiving sensor (1), and safety sensor brackets (2)
15. Remote control
16. Push button door control
17. White and red/white wire
18. Installation manual and all warning labels
See Hardware page 6.
Go to chamberlain.com for replacement or additional accessories:
3-button remote control model 953EV-P2
Wireless keypad model 940EV-P2
9 x2
14
2
8 x1
7
18
12
8 x4
14 x1 14 x1
11
6
10
3
5
1
16 17
13
4
15
Preparation

6
Hardware
ASSEMBLY INSTALLATION DOOR CONTROL
Insulated Staples
(Not Shown)
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
Bolt
Nut 3/8" Lock Washer 3/8"
Master Link (2)
Threaded
Shaft Clevis Pin 5/16"x1-1/2"
Ring
Fastener (3)
Hex Bolt 5/16"-18x7/8" (4)
Lock Washer
5/16"-18 (5)
Nut
5/16"-18 (6)
Self-Threading Screw
1/4"-14x5/8" (2)
Clevis Pin 5/16"x1"
Clevis Pin 5/16"x1-1/4"
Lag Screw 5/16"-9x1-5/8" (4)
Screw
6ABx1-1/2" (2)
Drywall
Anchors (2)
Hex Screw 10-24 (2) Wing Nut (2)
Preparation

7
AssemblySTEP1AssembletheRailandInstalltheTrolleyTo prevent INJURY from pinching, keep hands and fingers away from the joints while assembling the rail.
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
The front rail has a cut out “window” at the door end. The rail tab MUST be on top of the rail when assembled.
1. Remove the straight door arm and hanging bracket packaged inside the front rail and set aside for
Installation Step 5 and 9. NOTE: To prevent INJURY while unpacking the rail carefully remove the
straight door arm stored within the rail section.
2. Align the rail sections on a flat surface as shown and slide the tapered ends into the larger ones. Tabs
along the side will lock into place.
3. Place the motor unit on packing material to protect the cover, and rest the back end of the rail on top.
For convenience, put a support under the front end of the rail.
4. As a temporary stop, insert a screwdriver into the hole in the second rail section from the motor unit,
as shown.
5. Check to be sure there are 4 plastic wear pads inside the inner trolley. If they became loose during
shipping, check all packing material. Snap them back into position as shown.
6. Slide the trolley assembly toward the screwdriver as shown.
7. Slide the rail onto the “U” bracket, until it reaches all the stops on the top and sides of the “U” bracket.
Wear Pads
Front Rail Section
(TO DOOR)
“U” Bracket
(TO MOTOR UNIT)
Trolley
Rail Tab
On Top
Slide to stops
on top and sides
of “U” bracket
Screwdriver

8
AssemblySTEP2FastentheRailtotheMotorUnitTo avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the top of
the opener.
1. Insert a 1/4"-20 x 1-3/4" bolt into the cover protection bolt hole on the back end of the rail as shown.
Tighten securely with a 1/4"-20 lock nut. DO NOT overtighten.
2. Remove the bolts from the top of the motor unit.
3. Use the carton to support the front end of the rail.
4. Place the “U” bracket, flat side down onto the motor unit and align the bracket holes with the bolt
holes.
5. Fasten the “U” bracket with the previously removed bolts; DO NOT use any power tools. The use of power
tools may permanently damage the garage door opener.
6. Attach chain spreader to the motor unit with two screws.
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
“U” Bracket
Hex Screws
8-32x7/16
Cover Protection
Bolt Hole
Bolt
Lock Nut
Bolts (Mounted in the
garage door opener) Chain
Spreader

9
AssemblySTEP3InstalltheIdlerPulley1. Lay the chain/cable beside the rail, as shown. Grasp the end of the cable and pass approximately 12"
(30 cm) of cable through the window. Allow it to hang until Assembly Step4.
2. Remove the tape from the idler pulley. The inside center should be pre-greased. If dry, regrease to
ensure proper operation.
3. Place the idler pulley into the window as shown.
4. Insert the idler bolt from the top through the rail and pulley. Tighten with a 3/8" lock washer and nut
underneath the rail until the lock washer is compressed.
5. Rotate the pulley to be sure it spins freely.
6. Locate the rail tab. The rail tab is near the idler pulley on the front rail section. Use a flat head
screwdriver and lift the rail tab until the tab is vertical (90º).
Rail
Idler Pulley
Grease Inside Pulley
Bolt
Chain/cable
Lock Washer
Nut
Bolt Nut 3/8" Lock Washer 3/8"
HARDWARE
Rail Tab

10
AssemblySTEP4InstalltheChain1. Pull the cable around the idler pulley and toward the trolley.
2. Connect the cable to the retaining slot on the trolley, as shown. (Figure 1)
a. Push pins of master link bar through cable link and trolley slot.
b. Push master link cap over pins and past pin notches.
c. Slide the closed end of the clip-on spring over one of the pins. Push the open end of the clip-on
spring onto the other pin.
3. With the trolley against the screwdriver, dispense the remainder of the cable/chain along the rail
toward the motor unit around the sprocket and continuing to the trolley assembly. The sprocket teeth
must engage the chain. (Figure 2)
4. Check to make sure the chain is not twisted, then connect it to the threaded shaft with the remaining
master link.
5. Thread the inner nut and lock washer onto the trolley threaded shaft.
6. Insert the trolley threaded shaft through the hole in the trolley. Be sure the chain is not twisted. (Figure
3)
7. Loosely thread the outer nut onto the trolley threaded shaft.
8. Remove the screwdriver.
Sprocket
Figure 1
Figure 2
HARDWARE
Master
Link
Threaded Shaft
Threaded
Shaft
Outer Nut
Inner Nut
Lock Washer
Master Link
Master
Link
Figure 3
a.
b.
c.