Chamberlain Merlin Professional MT230 User manual

Owners Copy: Please keep these instructions for future reference
This manual contains IMPORTA T SAFETY information.
DO OT PROCEED WITH THE I STALLATIO BEFORE READI G THOROUGHLY.
N2966N2966N2966N2966
www.chamberlainanz.com
MT230
Sectional and Tilt Garage Door Opener
Installation and Operating Instructions

2
CO TE TS PAGE
SAFETY INSTRUCTIONS . . . . . . . .2
DOORTYPES .................3
TOOLS REQUIRED . . . . . . . . . . . .3
HARDWARE PROVIDED . . . . . . . .3
BEFORE YOU BE IN . . . . . . . . . . .4
COMPLETED INSTALLATION . . . .4
ASSEMBLY .................4-5
INSTALLATION . . . . . . . . . . . . .6-10
ADJUSTMENT . . . . . . . . . . . . .11-12
SAFETY REVERSE SYSTEM . . . .12
INSTALL IR SAFETY BEAMS . . . .13
AUTO-CLOSE ................14
WIRED DOOR CONTROLS . . . . .15
WIRELESS PRO RAMMIN .15-16
ACCESSORIES . . . . . . . . . . . . . . .17
REPLACEMENT PARTS . . . . .18-19
DIA NOSTIC CHART . . . . . . . . .20
TROUBLESHOOTIN . . . . . . . . . 21
SPECIFICATIONS . . . . . . . . . . . .22
OPERATION OF YOUR OPENER 22
MAINTAININ YOUR OPENER . .22
CARE OF YOUR OPENER . . . . . .22
WARRANTY .................23
Warning: If your garage has no service entrance door, a C 1702 outside quick release must be installed.
This accessory allows manual operation of the garage door from outside in case of power failure.
The Protector SystemT must be used for all
installations where the closing force as
measured on the bottom of the door is over
400N (40kgf). Excessive force will interfere
with the proper operation of the Safety
Reverse System or damage the garage door.
After installation, ensure that the parts of
the door do not extend over public foot-
paths or roads.
Install the wireless wall control (or any addi-
tional wall control) in a location where the
garage door is visible, at a height of at least
1.5m and out of the reach of children. Do
not allow children to operate push button(s)
or transmitter(s). Serious personal injury from
a closing garage door may result from misuse
of the opener.
Permanently fasten the Warning Labels in
Prominent Places, adjacent to Wall Controls
and manual release mechanisms as a
reminder of safe operating procedures.
Activate opener only when the door is in
full view, free of obstructions and the open-
er is properly adjusted. No one should
enter or leave the garage while the door is
in motion.
Do not allow children to play near the door,
or door controls.
Disconnect electric power to the garage
door opener before making repairs or
removing covers.
KEEP THESE INSTRUCTIONS
WAR I G
• Failure to comply with the following instructions may result in serious personal injury or property damage.
• Read and follow all instructions carefully.
• The garage door opener is designed and tested to offer safe service provided it is installed and
operated in strict accordance with the instructions in this manual.
These safety alert symbols mean WARNING : A possible risk to personal safety or
property damage exists.
Keep garage door balanced.Do not let the
garage door opener compensate for a binding or
sticking garage door. Sticking, binding or unbal-
anced doors must be repaired before installing this
opener.
Do not wear rings, watches or loose clothing
while installing or servicing a garage door opener.
Frequently examine the door installation, in
particular cable, springs and mountings for signs
of wear, damage or imbalance. Do not use if repair
or adjustment is needed since springs and hard-
ware are under extreme tension and a fault can
cause serious personal injury.
To avoid serious personal injury from entangle-
ment, remove all ropes, chains and locks con-
nected to the garage door before installing the
door opener.
Installation and wiring must be in compliance
with your local building and electrical codes.
The safety reverse system test is very impor-
tant. Your garage door UST reverse on contact
with a 40mm obstacle placed on the floor. Failure
to properly adjust the opener may result in serious
personal injury from a closing garage door.
Repeat the test once a month and make any
necessary adjustments.
This opener should not be installed in a damp
or wet space exposed to weather.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervi-
sion or instruction concerning use of the appliance
by a person responsible for their safety.
START BY READING THESE I PORTANT SAFETY INSTRUCTIONS

3
1
ABC
2
1
A. One-piece door with horizontal track only
B. Sectional door with curved track
C. One-piece door without track
2
1
2
3
4
7527SP1 (optional accessory)
2.75m Segmented pole pack
(separate carton)
3m Chain Pack and Joiner
6
5
78
9
10
(1) MT230 opener
(2) Curved door arm
(3) Door mounting bracket
(4) Straight door arm
(5) Idler
(6) Header bracket
(7) Trolley assembly
(8) Chain and joiner
(9) Hardware bag
(10) Optional Segmented pole pack
3
DOOR TYPES
TOOLS REQUIRED
HARDWARE PROVIDED

1. Look at the wall or ceiling above the garage door. The header bracket must be securely fastened to structural
supports.
2. Do you have a finished ceiling in your garage? If so, a support bracket and additional fastening hardware
(not supplied) may be required.
3. Do you have an access door in addition to the garage door? If not, model CM1702 outside quick release accessory
is required. This accessory allows manual operation of the garage door from outside in case of power failure.
4. Complete the following test to make sure your garage door is balanced and is not sticking or binding:
• Lift the door about halfway. Release the door. If balanced, it should stay in place, supported entirely by its springs.
• 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 technician.
As you proceed with the assembly, installation and adjustment procedures in this manual, you may find it helpful to
refer back to this illustration of a completed installation for tilt doors (for sectional doors refer section 17).
12
3
12
4
6
9
8
11
13
14
7
15
10
5
NOTICE
DOOR
Trolley shuttle located on opposite side of pole
(1) Header sleeve
(2) Idler pulley bracket
(3) Trolley
(4) Pole
(5) Chain/belt
(6) Hanging bracket
(7) Power cord
(8) Opener
(9) Light lens
(10) Manual release rope & handle
(11) Curved door arm
(12) Straight door arm
(13) Door bracket and plate
(14) Header bracket
(15) Trolley release arm
ASSEMBLY SECTION
Remove the 5 sectional poles from the carton and lay them
out on the floor. The end pole (i.e. the pole without a
tapered edge) should be placed at the header end.
Assemble the poles by inserting the tapered end into the
non-tapered end of the next pole as illustrated. Ensure that
each pole is pushed firmly into the next.
OTE: If using a mallet to drive the joins home, use a
piece of timber at each end to minimise burring.
4
4
6
5
BEFORE YOU BEGIN
CO PLETED INSTALLATION (TILT DOOR EXA PLE SHOWN)
ASSE BLE 7527SP1 POLE PACK (OPTIONAL)

5
Slide the trolley assembly (1) onto the pole (3) taking
note of the door direction arrow (fig 1). The trolley
should be located midway along the pole.
Insert the pole (3) into the idler pulley (2) end as
illustrated.
DOOR
132A2605-1
1
2
3
7
8
15 Tooth Sprocket
for doors 2.5 to 3m or one
piece doors without track
20 Tooth Sprocket
for sectional doors
300-500mm
• Remove the sprocket cover from the opener and
wrap the chain around the desired chain sprocket.
OTE: The large sprocket may be used for door
types A and B, the smaller drive sprocket MUST
be used for door type C.
• Run the chain through the trolley as illustrated and
join using the chain connector. Ensure the connec-
tor is located 300 to 500mm from the opener.
Connecting the chain
Rotate adjuster Lock nut
Lock nut
NOTE: Trolley shuttle located on
opposite side of pole
Tighten the chain:
Once the chain has been installed, join the two ends
together using the connector. Rotate the adjuster until the
chain has no slack.
DO NOT OVER TI HTEN!
Once the chain has been tensioned, tighten the lock nuts.
INSTALL THE TROLLEY AND IDLER PULLEY
RE OVE CHAIN SPROCKET COVER AND INSTALL THE CHAIN
Fig. 1

6
The header bracket must be rigidly fastened to a
structural support of the garage. Reinforce the wall or
ceiling with a 40mm (1-1/2") board if necessary.
Failure to comply may result in improper operation of
safety reverse system.
You can attach the header bracket either to the header
wall (1) or to the ceiling (3). Follow the instructions which
will work best for your particular requirements. With the
door closed, mark the vertical centreline (2) of the garage
door. Extend line onto header wall above the door.
Open door to highest point of travel. Draw an intersecting
horizontal line (4) on header wall 50mm or 200mm above
high point to provide travel clearance for top edge of door,
(height depends on door type refer section 15).
3
1
2
4
Wear protective goggles when working overhead to protect your eyes from injury.
Disengage all existing garage door locks to avoid damage to the garage door.
To avoid serious personal injury from entanglement, remove all ropes connected to the garage door
before installing the opener.
It is recommended that the opener be installed 2.1m (7 feet) or more above the floor where space permits.
INSTALLATION SECTION
1
50mm to 200mm
(depending on door type)
3
B
150mm
(6")
21
3
A6
3
7
5
4
2
1
23
6
200mm
50mm
C
Installing Header Bracket Pole
A. Wall Mount for one piece tilt doors: Centre the brack-
et (2) on the vertical guideline (1) with the bottom edge
of the bracket on the horizontal line (6). Mark either set
of bracket holes (4) if using a central fixing point. If
not use the screws provided to fasten the bracket
securely using the corner holes (5). Drill 4.5mm
(3/16") pilot holes and fasten the bracket with wood
screws (3).
B. Wall Mount sectional and tracked tilt doors: Centre
the bracket (2) on the vertical guideline (1) with the bot-
tom edge of the bracket on the horizontal line (6). Mark
either set of bracket holes (4) if using a central fixing
point. If not use the screws provided to fasten the
bracket securely using the corner holes (5). Drill
4.5mm (3/16") pilot holes and fasten the bracket with
wood screws (3).
C. Ceiling Mount: Extend vertical guideline (1) onto the
ceiling. Centre the bracket (2) on the vertical mark no
more than 150mm (6") from the wall. Drill 4.5mm (3/16")
pilot holes and fasten the bracket with wood screws (3).
For concrete ceiling mount, use concrete anchors (7)
provided.
9
10
POSITION THE HEADER BRACKET
INSTALL THE HEADER BRACKET

7
Position opener on garage floor below the header bracket.
Use packing material to protect the cover.
OTE: To enable the Pole to clear sectional door springs,
it may be necessary to lift opener onto a temporary sup-
port.
The opener must either be secured to a support or held firm-
ly in place by another person. Raise the pole assembly until
chain pulley and header brackets come together. Join with
clevis pin (1). Insert R-Clip (2) to secure.
1
2
2
1
Header
Bracket
Top of Door
100mm spacer should
be used to determine
the correct mounting
from the ceiling
Pole
Door 50mm spacer should
be used to determine
the correct mounting
from the ceiling
200mm (8”)
above the highest
point of travel
Header
Bracket
50mm (2”)
above the highest
point of travel
Pole
Door 50mm spacer should
be used to determine
the correct mounting
from the ceiling
Header
Bracket
50mm (2”)
above the highest
point of travel
Pole
SECTIO AL DOOR OR
TRACKED TILT DOOR
You will need a 50mm piece of timber or similar
spacer to gauge the distance between door and pole.
1. Raise the opener onto a support.
2. Open the door completely, place a 50mm
spacer between the door and the rail (as shown).
3. If the top section or panel hits the trolley when
you raise the door, pull down on the trolley arm
to disengage the opener. Leave the trolley in
this position until opener is fastened in place.
ONE PIECE TILT DOOR
You will need a 100mm (4”) piece of timber or similar
spacer to gauge the distance between door and pole.
1. Raise the door onto a support.
2. Open the door completely, place a 100mm
spacer between the door and the rail (as shown).
3. The top of the door should be level with the top
of the opener. Do not position the opener more
than 50mm (2”) above this point.
11
12
ATTACH POLE ASSE BLY TO HEADER BRACKET
POSITIONING THE OPENER

8
The opener must be securely fastened to a structural support
of the garage.
Three representative installations are shown. Yours may be
different. Hanging brackets (1) should be angled (Figure A)
to provide rigid support. On finished ceilings, (Figure B)
attach a sturdy metal bracket (not supplied) (4) to a structur-
al support before installing the opener.
For concrete ceiling mount, (Figure C), use concrete anchors
(5) (provided).
On each side of opener measure the distance from the open-
er to the structural support (or ceiling).
Cut both pieces of the hanging bracket to required lengths.
Flatten one end of each bracket and bend or twist to fit the
fastening angles. Do not bend at the bracket holes. Drill 4,
5mm (3/16") pilot holes in the structural supports (or ceiling).
Attach flattened ends of brackets to supports with wood
screws (2).
Lift opener and fasten to hanging brackets with screw, lock washer. Check to make sure the pole is centred over the
door. REMOVE 50mm board. Operate door manually. If door hits the pole, raise header bracket.
A
C
5
2
3
2
B
2
4
3
3
2
2
1
5
3
6
6
1
3
2
6
1
13
DOOR
DOOR
Disengaged
Engaged
Thread one end of rope (1) through hole in top of red handle so
" OTICE" reads right side up as shown (3). Secure with an over-
hand knot (2). Knot should be at least 25mm (1") from end of the
rope to prevent slipping. Thread other end of rope through hole in
release arm of the outer trolley (4). Adjust rope length so that han-
dle is 1.8m (6 feet) above the floor. Secure with an overhand knot.
ote: If it is necessary to cut rope, heat seal cut end to
prevent fraying.
Door should be released in the closed
position if possible.
To Disengage:
Pull down the on red handle.
DO NOT USE THE HANDLE TO OPEN OR
CLOSE THE DOOR.
To Engage:
Pull the red handle up and back towards the
opener. The trolley will engage when opener
is activated.
2
3
4
NOTICE
2
1
DOOR
DO NOT DISENGAGE THE OPENER TO ANUAL OPERATION WITH CHILDREN, PERSONS OR OTHER
OBJECTS INCLUDING OTOR VEHICLES WITHIN THE DOORWAY: (The door is under significant tension and if
the door has developed a fault or incorrect tension, it may be unsafe and may fall rapidly.)
14
HANG THE OPENER
ATTACH ANUAL RELEASE ROPE & HANDLE

9
Open Door
Door with
Backward Slant
(Incorrect)
Correct Angle
Trolley
Figure 5
Nuts
Lock
Washers
R-Clip
Straight
Arm
Door
Bracket
Clevis Pin Curved
Door Arm
Figure 4
Assemble the Door Arm:
• Fasten the straight and curved door arm sections
together to the longest possible length with a 2 or 3
hole overlap (Figure 4).
• Make sure the garage door is fully closed. Connect
the straight door arm section to the door bracket with
the clevis pin.
• Secure with an R-clip.
• Pull the emergency release handle, disengage the
trolley by pulling straight down on the emergency
release cord. Slide the trolley toward opener.
• Connect the curved arm section to the trolley using
the clevis pin and R-clip provided.
OTE: When setting the up limit the door should
OT have a backward slant when fully open as
illustrated (Figure 5). A slight backward slant will
cause unnecessary bucking and/or jerking opera-
tion as the door is being opened or closed from the
fully open position (figure 5).
16
Sectional and One-Piece Door Installation Procedure:
1. Centre door bracket (with or without door bracket plate, as required) at the top inside face of door as shown. Mark
holes.
A. One-piece doors: locate bracket at
inside face of the door 0-100mm down.
B. Sectional door: 150 - 250mm below
the top of the door.
2. A. Wooden doors
Drill 8mm holes (5/16") and fasten the
door bracket with nut, lock washer, and
carriage bolt (3).
B. Sheet metal doors
Fasten with wood screws (2).
C. One-piece door optional
Fasten with wood screws (2).
3
2
BC
A
1
2
A. 0-100mm
B. 150-250mm
3
3
1
1
2
1
15
CONNECT THE DOOR AR (ONE PIECE DOORS)
FASTEN DOOR BRACKET

10
R-clip
Fastener
Door
Bracket
Straight
Door Arm
Curved Door Arm
Trolley
4
5
Door Bracket
3
Cut this end
Emergency
Release
Handle
4
5
3
Clevis Pin
1
Pulley
200mm (8”) min.
Figure 1
Figure 2
Figure 3
HARDWARE PROVIDED
2
5 4 2
3
1
Trolley
Pulley
200mm (8”) min.
Trolley
Pulley
200mm (8”) min.
Makes sure garage door is fully closed. Pull the
emergency release handle to disengage the trolley.
Slide the trolley assembly back 200mm from the
idler pulley.
Figure 1.
• Fasten straight door arm section to trolley
assembly using the hardware provided with
your opener.
Figure 2.
• Bring arm section 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.
• If holes in curved arm are above holes in
the straight arm, disconnect straight arm
and cut approximately 150mm from
solid end. Re-connect to trolley with cut
end down as illustrated.
• Bring arm sections together.
• Find two pairs of holes that line up and join
with bolts, washers and nuts.
CO ECT ELECTRIC POWER
TO AVOID INSTALLATION DIFFICULTIES, DO NOT RUN THE GARAGE DOOR OPENER UNTIL
INSTRUCTED TO DO SO.
Connect the opener to a properly EARTHED power outlet, installed in compliance with local building
and electrical standards.
17 CONNECT DOOR AR (SECTIONAL DOORS)

11
OTE: Repeated operation of the opener in a short
period of time during setup may trigger the thermal-
cutout of the motor. In this case you will have to wait
for approximately five minutes for the motor to cool
sufficiently to continue the installation process. If the
unit has overheated you will hear the relays clicking
in response to the transmitter or pushbutton but the
motor will not operate. After cooling down, normal
operation will resume.
The limit adjustment screws are inside the lamp cover
and are marked as up limit and down limit. One full turn
of either screw results in approximately 150mm of trolley
travel.
• Plug the opener into an earthed three-pin 220-240V out-
let and switch on the power. The opener’s courtesy lamp
may turn on, or may flash for five seconds.
• Remove the lamp cover by turning the catch on its under-
side. Remove the green control panel cover to expose
the setup controls. Observe the red and orange indicator
LEDs. The red LED will stay on continuously at the fully
closed position. The orange LED will stay on continuous-
ly at the fully open position. Identify the green operate
button. Ensure the door is engaged on the trolley.
• Press and release the green operate button to move the
door up or down. Press again to stop in the required fully
open or fully closed positions. Each time the operate but-
ton is pressed the door will stop or move in the opposite
direction.
• When the door is at the fully closed position turn the down-limit screw (located adjacent to the courtesy lamp) until the
red down-LED stays on continuously.
• When the door is at the fully open position, turn the up-limit screw (located adjacent to the courtesy lamp) until the
orange up-LED stays on continuously.
• If the door can not be moved sufficiently far enough then look at the red and orange LEDs. If one of these is on con-
tinuously then the door has stopped at a limit point. Adjust that limit to allow more travel. One turn of a limit adjustment
screw = approximately 250mm of door travel.
ADJUSTMENT SECTION
18
arrow = more travel
DOWN
LIMIT
UP LIMIT
Without a properly installed safety 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 rever-
sal system UST be tested. Door UST reverse on
contact with 40mm high object on floor.
To prevent serious damage to vehicles, be
sure fully open door provides adequate clear-
ance
ADJUST THE TRAVEL LI ITS

12
19
The Protector SystemT must be used for all
installations where the closing force as
measured on the bottom of the door is over
400N (40kgf).
SETTING THE FORCE SENSITIVITY
The force, as measured on the closing edge of the door,
should not exceed 400N (40kgf). If the closing force is
measured to more than 400N, The Protector SystemTM must
be installed (refer section 21). The force setting regulates
the amount of power required to open and close the door.
This procedure requires the door to be engaged (see
section 14) and run through one full cycle of operation.
Step 1: Start with the door in the fully open position and the
green control panel cover should be removed (see fig 1
section 22). Press the red “learn” button twice on the con-
trol panel to enter into the force learn mode. The amber
LED marked open on the control panel will flash quickly.
Step 2: Press the green operate button on the control
panel. The door will travel to the DOWN limit. Press the
operate button again, the door will travel to the UP limit. The
amber LED marked open on the control panel will stop
flashing when the force has been learnt.
close
operate
learn
Press learn
button twice
open
open
LED will start flashing
x2
operate
learn
Press OPERATE
button (door will close)
Press OPERATE
button to open the
door
LED will turn off
Procedure: Place a 40mm obstacle (1) laid flat on the floor under the garage door. Operate the door in the down direc-
tion. The door must reverse on the obstacle. If the door stops on the obstacle, it is not travelling far enough in the down
direction. Remove the lamp cover to locate the travel limit adjustment screws. Increase the down limit by turning down
limit adjustment screw clockwise (1 turn = approximatly 250mm travel). Repeat test.
When the door reverses on the 40mm obstacle, remove the obstacle and run the opener through a complete travel
cycle. Door must not reverse in closed position. If it does, adjust Limits and Force and repeat safety reverse test.
Repeat test once a month and adjust as needed.
1
40mm 1
40mm
20
The safety reverse system test is important. The garage door must reverse on contact with a 40mm
obstacle laid flat on the floor. Failure to properly adjust opener may result in serious personal injury
from a closing garage door.
TEST THE SAFETY REVERSE SYSTE

13
12Vdc
+31
2
com IR P/B
manual control
close
timer
to
close
operate
learn
open
roller:R
L
132A2663
roller:R
L
12Vdc
+31
2
com IR P/B
manual control
771ANZ
P/B
(See accessories)
Install this accessory for all installations on tilt doors, doors over 2.5m and when the closing force as meas-
ured on the bottom of the door is over 400N (40kg).
After opener has been installed and adjusted, The Protector System™ accessory can be installed. Instructions are
included with this accessory.
The Protector System™ provides an additional measure of safety against a small child being trapped under a
garage door.
It uses an invisible beam which, when broken by an obstruction, causes a closing door to open and prevents an open
door from closing and is strongly recommended for homeo ners ith young children.
Connection details:
Connect the two white wires from the C77 IR safety beams to the white 2 terminal located on the back of the opener
under the cover plate.
Connect the two white/black wires from the C77 IR safety beams to the grey 3 terminal located on the back of the open-
er under the cover plate.
OTE: The opener will automatically detect The Protector SystemTM when it is installed. The opener will not
close unless the sensors are aligned.
manual control
12Vdc
+
31
2
red
white
rx
white
white/ black
white
white/ black
12vdc
gnd
External
Device
100ma (max)
Keyswitch or
push button
com
no
com IR P/B
INSTALL THE PROTECTOR SYSTE T (OPTIONAL ACCESSORY)
21

14
arrow = more travel
DOWN
LIMIT
UP LIMIT
12Vdc
+31
2
com IR P/B
manual control
remove
for setup
manual
control
close
operate
learn
132A2663
open
roller:L
R
roller:L
R
0s/off
60s
180s
timer to
close
close
operate
learn
132A2663
open
roller:L
R
roller:L
R
0s/off
60s
180s
timer to
close
22 SETTING AUTO CLOSE (OPTIONAL)
OTE: The Protector SystemTM MUST be installed
to enable this feature.
The auto close feature will automatically close the
garage door after the preset time. The time can be
adjusted up to 180 seconds using the trim pot located
on the control board. Auto close can be disabled by
adjusting the trim pot to the 0s/off setting.
Installing and adjusting:
•Close the garage door.
• Turn the opener off.
• Remove the lamp cover.
• Ensure the trim pot on the opener is set to the 0s/off.
• Install The Protector SystemTM using the brackets,
wires and instructions provided with the product.
Twist the two white (only) wires together and termi-
nate them into the white (2) terminal. Twist the two
white/black wires together and terminate them into
the grey (3) terminal.
• Turn the opener on.
• Allow 5 minutes for the beams to self-learn to the unit
(do not walk through the beam during this time).
• Ensure the door is in the closed position, then adjust
the trim pot to the desired closing time by turning the
“timer to close” trim pot anti-clockwise (label indi-
cates approximate Timer To Close values).
Test the timer to close feature:
• Once the timer is set open the door and allow it to
close via the “timer to close” feature.
OTE: If more or less time is desired, adjust the
trim pot whilst the door is closed then repeat test
outlined above.
Auto close is NOT recommended for
households with young children.
Do not adjust the trim pot whilst the door is
in the open position.
Door will activate when the trim pot is adjust-
ed in the open position
Fig. 1

OTE: The transmitters supplied with your opener are pre-pro-
grammed to your opener in the factory. If you purchase additional
transmitters, you will need to program them into your opener using
the steps below.
24
15
WIRELESS PROGRA ING
Activate the opener only when door is in full view, free of
obstruction and properly adjusted. No one should enter
or leave garage whilst door is in motion. Do not allow
children to operate push button(s) or transmitter(s). Do
not allow children to play near the door.
Fix any wall control at a height of at least 1.5m and with-
in sight of the door but away from any moving parts.
close
operate
learn
Press and release
the red learn button
or
TO ADD Transmitters / Wall Control
Press and hold down the desired
button.
open
LED will flash continuously
Courtesy light will
flash once
close
operate
learn
Press and
hold the red
learn button
TO DELETE ALL TRANSMITTERS
open
LED will light up
open
LED will go out
after (approx) 9
seconds. Release
learn button
•Fix the warning against entrapment label near the
wall control.
ADDI G transmitters using the “learn” button
• Press and hold down the transmitter button you wish to program
to the opener.
• The orange LED will flash continuously to indicate it is receiving
signal from the transmitter.
• Press and release the “learn” button on the opener.
• The courtesy light will flash once.
• Ensure the door is clear of obstruction, then test the transmitter.
Deleting ALL transmitters and codes
OTE: This deletes all transmitters and codes.
• Press and hold the “learn” button until the orange indicator light
goes out (approximately 9 sec).
To install:
• Carefully pry open the CM128 and locate the two screws for
mounting.
• Attach to the wall using the two screws and wall anchors provided
if mounting to a plaster wall. If using a recessed wall box do not
use anchors.
OTE: Do not overtighten screws. The wall button supplied with your opener is pre-programmed to your
opener in the factory. If adding a new wall button, follow the steps below.
+
+
+
23
Disconnect power to the opener whilst
installing this accessory to prevent acci-
dental activation. Locate minimum 1.5m
above the floor.
INSTALLING YOUR C 128 WIRELESS WALL BUTTON

16
Programming C840 using the “learn” button:
1. Press and release the “learn” button (1) on opener. The learn
indicator LED will light up.
2. Within 30 seconds, enter a four digit personal identification num-
ber (PIN) of your choice on the keypad (2), then press and hold
the ENTER button.
3. Release the button when the opener courtesy light flashes once
(3). It has learnt the code.
Alternate programming method using the motion detecting
control panel (optional accessory):
OTE: This method requires two people if the keyless entry is
already mounted outside the garage.
1. Enter a four digit personal identification number (PIN) of your
choice on the keypad, then press and hold ENTER.
2. While holding the ENTER button, press and hold the LI HT but-
ton on the motion detecting control panel.
3. Continue holding the ENTER and LI HT buttons while you
press the push bar on the motion detecting control panel (all
three buttons are held).
4. Release buttons when the opener courtesy light flashes once.
25
Programming C379 wireless fingerprint access
system (optional accessory)
Full instructions are available with this accessory.
Once you have enrolled your user into the C379 you can pro-
gram the unit into your opener.
Using the “learn” button:
1. Press and release the “learn” button on the opener. The learn
indicator LED on the opener will light up.
2. Within 30 seconds, slide the cover of the C379 up as illustrated
(A). Swipe your finger on the reader head at a steady speed (B)
until the yellow led turns on (C).
3. When the opener’s courtesy light flashes it has learnt the code.
Ensure there are no obstructions in the path of the door, then
press the send button (D) to test the door.
LIGHT
LOCK
LIGHT
LOCK
1
2
3
1
2
3
4
close
operate
learn
Press and release
the red learn button
open
LED will light up
Courtesy light will
flash once
Release buttons
when light flashes
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
A
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
C
B
D
Slide the cover plate
up (A)
Swipe finger at a
steady speed (B)
Yellow LED will indicate
successful swipe (C)
Test reader by pressing
the send button (D)
close
operate
learn
Press and release
the red learn button
open
LED will light up
Courtesy light will
flash once
Enter 4 digit PIN at
keypad (within 30s)
With the LIGHT button
pressed, press and
hold the PUSH BAR on
the motion detecting
control panel
Press and hold down
LIGHT button on the
motion detecting
control panel
Enter 4 digit PIN at
keypad (within 30s)
Activate the opener only when door is in full view,
free of obstruction and properly adjusted. No one
should enter or leave garage while the door is in
motion. Do not allow children to operate push but-
ton(s) or transmitter(s). Do not allow children to play
near the door.
KEYLESS DEVICE PROGRAMMING (OPTIONAL ACCESSORY)

17
26
• Remove power from the opener before adding or
replacing the light bulb. Use only E27 45mm
Round 40W max light bulbs.
• Remove lamp cover (if installed). Push in slightly
and turn to release the screw with a large screw-
driver or coin. Carefully remove the cover and put
in a safe place.
• Add or replace the lamp as illustrated.
• Replace the cover and fasten in place by turning
the release screw to the closed position.
INSTALL OR REPLACE THE LA P
(1) Model CM844 4 Channel transmitter
(2) Model CM128 Wireless wall button
(3) Model C940 Single channel transmitter
(4) Model C943 3 Channel transmitter
(5) Model C945 3 Channel mini transmitter
(6) Model 75LM Illuminated door bell push button
(7) Model C98 Motion detecting control panel
(8) Model C840 Keyless entry system
(9) Model C77 The Protector SystemTM (IR Beams)
(10) Model CM1702 Quick release lock
(11) Model 760E Outside keyswitch
(12) Model C379 Wireless fingerprint access system
(13) Model ANT4X-1 433Hz Antenna, cable and adaptor
56
37
1
11
12
2
LOCK LIGHT
4
C840
CM128 75LM C98
760E
C1702
C77
C940 C943 C945
89
10
CM844
13
ENROLL
FAIL
RETRY
SEND
PASS
READY
ENROLL
C379
ACCESSORIES
27

18
NOTICE
091B0019 178B0086B
012B0906
178B0034B
012B0905
001A6829 012A0932
002A0958
001A6698
28 REPLACE ENT PARTS

19
PDR40082
Insulated varistor
203D1720
Motor capacitor
CDR11520
Dual sprocket
PDR59003
Service logic board
PDR50098
Motor & worm gear
assembly
041A2828
Handle & pull
rope assembly
PDR50070
Light cover
CDR10693
Side cover
CDR10693
Side cover
PDR59001
Chasis complete assembly
217H 0375
Lampholder
PDR30018
Speed sensor
BDR21043
ADR12392
Main cover V2
29 REPLACE ENT PARTS (CONTINUED)

20
DIAGNOSTIC CHART
Possible limit switch
error on start up.
Possible RPM sensor
failure. Unplu to reset.
Safety reversin sensors
sli htly misali ned
(dim or flashin LED).
Door control or
wire shorted.
Safety reversin sensors
wire shorted or black/white
wire reversed.
Safety reversin sensors
wire open (broken or dis-
connected).
1 FLASH
2 FLASHES
3 FLASHES
4 FLASHES
5 FLASHES
6 FLASHES
OR
System failure
10 to 15 FLASHES
Symptom: One or bot of t e indicator lig ts on t e IR Beams are not on
steadily.
• Inspect sensor wires for an electrical short (eg. staple in wire), correct wiring polar-
ity (black/white wires reversed), broken or disconnected wires, replace/attach as
needed.
• Disconnect all wires from the opener.
• Remove beams from brackets and shorten sensor wires to 30-60mm (1-2”) from
back of each sensor.
• Re-attach sending eye to opener using shortened wires. If sending eye indicator
light glows steadily, attach the receiving eye.
• Align beams. If the indicator lights glow, replace the wires for the beams. If the sen-
sor indicator lights do not light up, replace the IR Beams.
Symptom: LED is not lit on door control.
• Check polarity of the wire connection to the opener.
• Inspect door control/wires for an electrical short (eg. staple in wire), replace as need-
ed.
• Disconnect wires at door control, touch wires together. If opener activates, replace
door control.
• If opener does not activate, disconnect door control wires from opener. Momentarily
short across red and white terminals with jumper wire. If opener activates, replace
door control wires.
Symptom: Sending indicator light glows steadily, receiving indicator light is
dim or flashing.
• Realign receiving eye sensor, clean lens and secure brackets.
Symptom: The RP Sensor = Short travel 150-200mm (6-8").
• Unplug unit to reset. Try to operate opener. Check diagnostic code.
• If it is still flashing 5 times and opener moves 150-200mm (6-8"), the RPM sensor
may need to be replaced, for details contact your Chamberlain Merlin Professional
Dealer.
Symptom: Door will not open or close
• Turn the power off. Wait 10 seconds.
• Turn power back on. If opener fails to operate correctly after resetting, contact
your Chamberlain Merlin Professional Dealer.
Symptom: Opener will not open or close the door
• Turn the power off. Wait 10 seconds.
• Turn power back on. If opener fails to operate correctly after resetting, contact your
Chamberlain Merlin Professional Dealer.
(report the number of flashes as the fault reference).