Merlin Overdrive Supplement

MRC950EVO
ight Commercial Rolling Door Opener
Installation and Operating Instructions
Owners Copy: Please keep these instructions for future reference
This manual contains IMPORTANT SAFETY information
DO NOT PROCEED WITH THE INSTA ATION BEFORE READING THOROUGH Y
gomerlin.com.au
gomerlin.co.nz

IMPORTANT
* Chain reduction assemblies that may interfere with the safe and
proper operation of the OVERDRIVETM (MRC950EVO) must be removed.
* All hand chains must be removed prior to fitting the OVERDRIVETM
(MRC950EVO).
* DO NOT use Extension Poles with the OVERDRIVETM (MRC950EVO).
* The OVERDRIVETM (MRC950EVO) can be used on windlocked doors
based on the following conditions:
- door is professionally installed, correctly sprung and maintained to
manufacturerʼs instruction
- door size up to 18 m2
- product is only operated in normal conditions, not during adverse wind
conditions.
NOTE:
When installed on light commercial doors, the warranty covers the
replacement of the opener only. Merlin holds no responsibility for the
door or costs associated with the door in order to access the opener.
For warranty to be claimed in a light commercial application, proof
must be provided that the door has been serviced according the door
manufacturers requirements and that the door is spring balanced, is
operable by hand and opens and closes with no more than a maximum of
20 kgs of lifting weight.

1
CONTENTS PAGE
SA ETY INSTRUCTIONS . . . . . . . .1
CARTON INVENTORY . . . . . . . . . .2
TOOLS REQUIRED . . . . . . . . . . . .2
DOOR REQUIREMENTS . . . . . . . .2
PREPARE & TEST THE DOOR . .3-4
INSTALLATION . . . . . . . . . . . . . .4-5
CONNECT ELECTRIC POWER . . .5
ADJUSTMENT . . . . . . . . . . . . . . .6-7
INSTALL THE PROTECTOR
SYSTEM .....................8
WIRELESS PROGRAMMING . .9-10
BATTERY BACK UP . . . . . . . . .11-12
SPECIAL EATURES & WIRING .13
SPARE PARTS . . . . . . . . . . . . . . .14
ACCESSORIES . . . . . . . . . . . . . .14
DIAGNOSTIC CHART . . . . . . .15-16
TROUBLESHOOTING . . . . . . . . .17
MAINTAINING YOUR OPENER . .19
CARE O YOUR OPENER . . . . . 19
OPERATION O YOUR OPENER 19
SPECI ICATION . . . . . . . . . . . . . .19
WARRANTY . . . . . . . . . . . . . .20-22
The opener must not be used on a wicket
door (door within a door).
The rotector SystemTM must be used for all
installations where the closing force as
measured on the bottom of the door is over
400 N (40 kgf). 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
footpaths or roads.
Install the wireless wall control (or any
additional wall control) in a location where
the garage door is visible, at a height of at
least 1.5 m 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.
ermanently 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
opener 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 with door controls.
If the supply cord is damaged, it must be replaced
by the manufacturer, its service agent or similarly
qualified persons in order to avoid hazard.
Disconnect electric power and battery to
the garage door opener before making
repairs or removing covers.
KEE THESE INSTRUCTIONS
WARNING
•Failureto comply with the following instructions may resultinserious 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.
NOTE: If your garage has no service entrance door, a CM1702 outside quick release must be installed.
This accessory allows manual operation of the garage door from outside in case of power failure.
Keep garage door balanced.Do not let the
garage door opener compensate for a binding or
sticking garage door. Sticking, binding or
unbalanced doors must be repaired before
installing this opener.
Do not wear rings, watches or loose clothing
while installing or servicing a garage door
opener.Wear gloves and suitable protective
clothing where appropriate.
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
hardware are under extreme tension and a fault
can cause serious personal injury.
To avoid serious personal injury from
entanglement, remove all ropes, chains and
locks connected 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
important. Your garage door MUST reverse on
contact with a 40 mm obstacle placed on the floor.
ailure 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 appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capablities, or lack of experience and
knowledge, unless they have been given
supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Automatic Drive - Keep away from the area of
the door as it may operate unexpectedly.
This opener should not be installed in a damp
or wet space exposed to weather.
START BY READING THESE IM ORTANT SAFETY INSTRUCTIONS

1. Instruction manual (this document)
2. Stop collar
3. Clamp bracket
4. Release handle, cord and risk of entrapment card
5. Transmitters (2)
6. Wireless wall button
7. Hardware bag
8. Clamp plate
9. Warning label and risk of entrapment label
10. Battery back up
CARTON INVENTORY
1
10
(or work platform,not shown)
TOOLS REQUIRED
2
1. Ladder or work platform (not shown)
2. Adjustable wrench for U-bolts already installed
on the door
3. 8mm socket, 10mm socket and 13mm extended
socket and socket wrench
4. 300mm socket extension (for minimum side-room
installations)
5. Drill and 5.5mm drill bit
6. Philips-head screwdriver
7. Marker pen
8. Hoist or similar device to safely lift & support door
(not shown)
DOOR REQUIREMENTS
3
Ensure that there is at least 45 mm from the edge of the curtain to the edge of the bracket. If the roller door
drum is on the edge of the curtain or is a smaller diameter, additional clearance may be required. ( Ensure
there is a power point near the opener.)
95mm
95mm
Minimum distance from
edge of curtain to edge of
door bracket 45mm
Alternate
clamping method
(Onto Axle only)
Preferred clamping
method
(Direct to Wall
Bracket)
The maximum allowable door height is 5.5m (light commercial door) with a maximum curtain area of 25m² (door
height in metres multiplied by the width in metres). The door must be of continuous corrugated sheet construction,
spring balanced & of a mass not exceeding 250kg. Door axle diameter must not exceed 35mm.
2

TESTING THE DOOR
4
Complete the following test to ensure your door is well
balanced, and not sticking or binding:
• Disable all locks and remove any ropes connected to the
door.
• Lift the door to about halfway and then release it. The
door should remain spring balanced.
• Raise and lower the door to determine if there are any
sticking or binding points (20 kgf is the absolute maximum
allowable to raise or lower the door in any position).
• If your door does not hold in place or the door binds, sticks
or requires excessive force to move, call a qualified door
technician before installing the opener.
Non opener side Opener side
• Install the stop collar on the opposite end to where
the opener is to be installed.
• it the stop collar hard against the boss of the door
drum. Ensure the U-bolt holding the door shaft to the door
bracket is tightly secured.
INSTALLING THE STO COLLAR
5
3
SAFETY CHECK!
Is the stop collar
installed?
YES: proceed to the next
step
NO: install the stop collar
before proceeding
INNING THE DOOR
Note: A ballooning door may delay the safety reversal
response and can compromise door security.
• To remedy any ballooning place self tapping metal screws
or rivets where the curtain leaves the roll. Secure these
through the curtain into the drum wheel at each end of the
roll.
• After determining the correct fastener location as shown, lift
the door approximately half a turn from the closed position
to allow access for drilling.
ree curtain Ballooning Add fasteners here
Door closed Door can be
lifted Door secure
6
Note: When installed on light commercial doors, the warranty covers the replacement of the opener
only. Merlin holds no responsibility for the door or costs associated with the door in order to access
the opener. or warranty to be claimed in a light commercial application, proof must be provided that
the door has been serviced according the door manufacturers requirements and that the door is
spring balanced, is operable by hand and opens and closes with no more than a maximum of 20 kgs
of lifting weight.

4
To disengage the opener
Pull the release cord down firmly,
(opener will make a clicking noise).
To re-engage the opener
Pull the release cord down firmly,
(opener will make a clicking noise).
Disable all locks and remove any ropes connected to the door.
Take care when operating the manual release as an open door may fall rapidly due to weak or
broken springs, or being out of balance.
O ERATING THE MANUAL RELEASE
8
Pull down
FIRMLY
click
Release cable
Rope
Manual release
warning label
Release handle
Overhand knot
DOWN Arrow
button
UPArrow
button
Learn
button
Learn Limits
button
• Thread one end of the rope through the hole in the top
of the red release handle so that “NOTICE” reads
right side up as shown.
• Secure with an overhand knot at least 25mm from the
end of the rope to prevent slipping.
• Thread the other end of the rope through the loop of
the manual release cable.
• Adjust rope length so the handle (when installed) will
be no higher than 1.8 m above the floor. Secure with
an overhand knot.
NOTE: Final adjustment of handle height should be
completed after the opener is installed. If it is
necessary to cut the rope, heat seal the cut end to
prevent unravelling (refer section 13).
THE RELEASE HANDLE & CORD
7
LEFT / RIGHT HAND INSTALLATION
9
LE T
(handing must be
changed during limit
setting, section 11)
RIGHT
(factory
default
setting)
Inside looking out

5
INSTALLATION ROCEDURE
NOTE: The opener can be installed on either side
of the door. The following instructions are for
RIGHT HAND INSTA ATIONS (as illustrated i.e.
inside the garage looking out). For left hand
installations, reverse the instruction terminology
(eg EFT for RIGHT etc).
Preparation:
• Place the opener in manual release mode (refer
section 8).
• Open the roller door fully. or safety, tie a rope
around the door.
• Ensure the door axle U-BOLT and door mounting
bracket on the left hand side (non opener side) are
securely fastened.
• Support the door with a door stand or similar device
to safely support the door.
• Mark the position of the door shaft on the right hand
door bracket (for reassembly purposes).
• While the door is supported, remove the right hand
axle U-Bolt and door mounting bracket from the wall.
Install the opener:
• Slide the opener over the door axle and engage the
drive legs into the door drum wheel, either side of a
spoke.
• Refit the door mounting bracket to the wall. If the
door bracket needs to be relocated due to opener
width, refer section 3.
• Clamp the opener on the door axle and door bracket
in the marked position using the clamp assembly
supplied (tighten to 25 – 28 Nm).
• If side room exceeds 95mm clamp independently to
the door axle as illustrated in section 3.
• Remove all ropes and the support stand.
• Check the operation of the door in manual mode by
raising and lowering by hand. It should operate
smoothly without sticking or binding. The disengage
handle should already be attached less than 1.8 m
above the floor (refer section 7).
Connect the power:
• Position the power cable away from the door curtain
and any moving parts.
• Plug the opener into a nearby power point and turn
ON.
• The opener courtesy LEDs should turn ON.
• The opener must now be programmed for:-
• DOOR TRAVEL LIMITS (Section 11)
• RIGHT OR LE T HAND OPERATION (Section 11)
• ORCE SETTING (Section 11)
Door stand
Rope
Tighten to
25-28 Nm
Do not allow people to walk under or
around the door during the installation
process as serious injury can occur.
10
Door stand
Rope

6
SETTING THE LIMITS FOR RIGHT OR LEFT HAND O ERATION AND FORCE
Travel limits set how far your door goes up and down. Your opener must be configured correctly for right or left
hand installation to operate correctly, if not the door will rotate in the reverse direction.
NOTE: The OVERDRIVETM (MRC950EVO) opener is factory configured for right hand installation.
Press and hold
until
FLASHING
LED
Press & release to accept
selected hand.
If required: Use DOWN button to adjust
Press and hold to drive
door up to open
Press and hold to drive
door down to closed
If required: Use UP button to adjust
Activate door to open
Close the door to test limits
Orange
LED ON &
Courtesy LEDS
on Dim
Motor will make a click &
FULL BRIGHT courtesy
LEDs will turn on
Right bank
will light up
(IF REQUIRED)
To change
press and hold
until correct
bank lights up
Left bank
will light up
for Left hand
installation
Click
Press & release to set the
UP limit
Press & release to set the
DOWN limit
The opener will operate during this procedure. Make sure the door is clear of obstruction.
Ensure your hands are away from any moving parts before activating the door.
Setting right or left hand operation:
• Ensure the door is positioned halfway and the opener
is engaged.
• Turn the power ON. After 2 seconds the Courtesy
LEDs will turn on.
• Press and hold the black (Limit) button until the
orange indicator LED starts flashing, and then
release. Either right or left courtesy LEDs will light
up.
• or right hand installations, the right side bank of
LEDs must light up, and for left hand installations,
the left hand bank must light up.
• If the incorrect bank of LEDs is illuminated, simply
press the Yellow learn button until the opposite bank
lights up.
• Press and release the Black limit set button to
accept hand. UP button will flash.
Setting the open (UP) limit:
• Press and hold the “UP” button, until the door
reaches the desired open position, and then release.
You can adjust the door by using the DOWN button
and UP button to adjust as necessary. Make sure
there is enough room for your vehicle to pass under.
• Press and release the Black limit set button to
acknowledge the Up position.
• Courtesy light flashes twice and DOWN button will
flash.
Setting the bottom (DOWN) limit:
• Press and hold the “DOWN” button until the door
reaches the desired closed position. If the door
closes too hard against the floor, use the UP and
DOWN button to adjust.
• Press and release the Black limit set button to
acknowledge the down position.
• Courtesy light flashes twice and UP button will flash.
Setting the FORCE:
• Press and release the UP button. The door will travel
to the UP limit and the DOWN button will flash.
• Press and release the DOWN button. The door will
travel to the DOWN limit.
• The indicator LED will stop flashing indicating the
force has been learned.
NOTE: The courtesy EDs will go out after 2.5
min.
• The door must travel through a complete cycle, UP
and DOWN, in order for the force to be set properly.
If the opener cannot open and close your door fully,
inspect your door to ensure that it is balanced
properly and is not sticking or binding.
11

7
Once you have completed your installation and
successfully carried out the safety reverse system test
(outlined above), install the warning labels provided
with your opener as shown.
The risk of entrapment label must be installed
adjacent to the release handle at a height of less than
1.8 m from the floor.
If required, use an eye bolt or hook (not included) to
guide the release handle rope.
The WARNING label must be installed in a prominent
place near any fixed control.
Any fixed wall control or wireless door control must be
mounted at a height of no less than 1.5 m out of the
reach of children.
Ensure the manual release instruction card is attached
to the rope as detailed in section 7.
Read the safety instructions (page 1) for further details
concerning safety.
FIXING WARNING LABELS
Operate the door in the down direction. The door must
reverse upon contact with the obstacle. If the door
stops on the obstacle, remove obstacle and repeat
limit and force setting (refer section 11).
Repeat test of the safety reverse system.
12
40mm Test obstacle
40mm
13
TESTING THE SAFETY REVERSE SYSTEM
The safety reverse system test is important.
The door must reverse on contact with a
40 mm obstacle laid flat on the floor. Failure
to properly adjust the opener may result in serious
personal injury from a closing door.
STANDARD INSTA ATION COMP ETE

8
NOTE: This accessory must be used for all
installations where the closing force as measured
on the bottom of the door is over 400 N (40 kgf).
After the 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 or animal
being trapped under a garage door. It uses an infra-
red 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
homeowners with young children.
Red LED
MUST BE ON Red LED
MUST BE ON
IR Beam IR Beam
IR Beams must be installed
to detect a 100 mm high
obstacle at any point along
the floor.
14
SAFETY FIRST!
Whilst Chamberlain have engineered safety features into your garage door opener, we urge you
to consider fitting IR Beams to your new garage door opener. In many countries these devices are
compulsory to assist in preventing serious injury or property damage. For your own peace of mind
and the safety of others please install this inexpensive safety device.
Door may operate unexpectedly, therefore do not allow anything to stay in the path of the door.
INSTALL THE ROTECTOR SYSTEM™ (IR BEAMS) O TIONAL ACCESSORY
Timer to close feature (TTC)
The Timer-to-close feature allows the door to automatically close after a specified time period. Prior to the door
closing, the garage door opener lights flash for 8 seconds before the door begins to close.
If the door encounters an obstruction while closing, the opener will make a second attempt to close the door. If
an obstruction occurs on the second attempt, the garage door opener will open, stop and WI NOT close until
the obstruction has been cleared and the opener has been operated again.
NOTE: The Protector SystemTM MUST be installed and operating for 5 minutes to enable this feature.
Installing and adjusting:
• Turn the opener off
• Install the Protector SystemTM using the brackets, wires and instructions provided with the product. Twist the
two white (only) wires together and terminate 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
With the door at the down limit, press and hold DOWN
arrow until orange LED starts blinking.
Yellow LEARN button is used to cycle through the
TTC settings:
1 x long blink = TTC O
1 x short blink = TTC 1 min
2 x short blink = TTC 5 min
3 x short blink = TTC 10 min
Press black rectangle button to set and exit.
Auto close is NOT recommended for households with young children.
12V DC
Up
Down
Yellow
Learn
Button
Black
Learn
Button
ENAB ING THE PROTECTOR SYSTEM: ( actory default – IR beams are not enabled.)
With the Protector System installed, enabled the IR Beams using the following process.
• TURN O the mains power and ensure any battery backup is also disconnected.
• PRESS and HOLD both the UP and DOWN arrow buttons.
• TURN ON the mains power to the operator.
• HOLD both arrows until the courtesy lamp flashes TWICE and remains ON.
The Protector System is now activated. Checks IRs operate correctly.

9
WIRELESS ROGRAMING (O TIONAL ACCESSORIES)
NOTE: Transmitter(s) and wall button supplied with your opener are factory programmed.
INSTALLING YOUR E128M WIRELESS WALL BUTTON
To install:
• Carefully pry open the E128M 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.
NOTE: Do not overtighten screws.
+
15
16
Disconnect power to the opener whilst installing
this accessory to prevent accidental activation.
Locate minimum 1.5 m above the floor.
Activate the opener only when the door is in full view, free of obstruction and properly adjusted.
No one should enter or leave garage whilst the 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 1.5 m and within sight of the door but away from any
moving parts.
NOTE: The wall control supplied with your opener should be pre-programmed by the factory.
If adding a new wall control, program into the opener before mounting the unit as detailed in
section 16.
Press LEARN
or
LED will FLASH
TO ADD Transmitters / Wireless wall button
Press and hold down the desired
Button.
Press LEARN for 9 seconds
TO DELETE ALL REMOTES
LED on WILL TURN ON
After 9 seconds all remotes
are deleted and LED will go
out.
Release LRN button when
Courtesy LEDs
flashes once
NOTE: If adding an installed wall control (E128M)
you will need a second person to press and hold
the desired button. If not installed, program the
wall button into the opener before mounting.
ADDING transmitters using the RN “ EARN”
button
• Press and hold down the button you wish to program
to the opener.
• The orange LED on the opener will flash to indicate
it is receiving signal from the transmitter.
• Press and release the “LRN” button.
• The courtesy LEDs will flash once.
• Ensure the door is clear of obstruction, then test the
transmitter.
Deleting A transmitter codes
NOTE: This deletes all transmitters and codes
•Press and hold the LRN learn button until the orange
indicator light goes out (approximately 9 sec).

10
17
2
3
4
3
Press and release
the yellow
learn button
Enter a 4-digit
PIN of your
choice
? ? ? ?
____
Press and hold
the enter button
Opener light bulbs
blink
After the lights
blink release the
ENTER button
1Locate
the yellow
learn button
Activate the opener only when the door is in
full view, free of obstruction and properly
adjusted. No one should enter or leave
garage whilst the 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.
Wireless Keypad E840M
To set the keyless entry PIN:
1.Locate the Yellow Learn button on the garage door
opener.
2.Press and release the Yellow Learn button on the
garage door opener. The LED will light.
3.Enter a 4-digit personal identification number (PIN) of
your choice on the keypad.
4.Press and hold the ENTER button. Check to see if
the opener light blinks. Release the ENTER button
after the light bulb blinks.
To change an existing keyless entry PIN:
1.Enter the existing programmed PIN that you want to
change.
2.Press and hold the # button until the light bulb blinks
twice.
3.Enter the new 4-digit PIN of your choice, then press
the ENTER button. The light bulb will blink once.
4.To test, enter the new PIN, then press the ENTER
button. The garage door opener will activate.
KEYLESS DEVICE ROGRAMMING (O TIONAL ACCESSORIES )

11
18
To prevent possible SERIOUS INJURY
or DEATH from electrocution,
disconnect ALL electric and battery
power BEFORE performing ANY service or
maintenance.
1. Installation instructions for mounting the BBU.
After the opener has been installed, position the BBU
next to the opener on a structural support (joist) within
BBUʼs cord length.
Attach the BBU to the support by using the wall or
ceiling mount holes on either side of the BBU and the
1” (25mm) screws (provided).
2. Connect the BBU to the Opener.
Disconnect the opener from the electrical outlet.
Connect the BBU cord into the connector on the
bottom of the opener (see picture below). Connect the
opener into the electrical outlet.
Turn the power ON. After 2 seconds the Courtesy
LEDs will flash 5 times.
After 20 seconds, the green diagnostic LED (see
picture next page) will begin to flash indicating the
BBU is charging.
IMPORTANT NOTE: Installation of the BBU when
permanent electrical power is not available (such as a
new construction and the electricity is not installed)
may damage the battery.
Unplug the BBU after testing to prevent damage.
BATTERY BACKU UNIT E475M12V
OPERATING INSTRUCTIONS
1. Test the installed BBU with the opener.
To test the BBU, disconnect the opener power cord
from the electrical power outlet.
A solid orange LED indicates the BBU is operating
on battery power.
A flashing orange LED indicates the BBU is
operating on battery power and that the battery
charge is low.
To test the BBU is functioning properly, open and
close the garage door.
Re-connect the opener power cord back into the
electrical outlet.
Verify that the green LED is flashing on the opener
(indicates that the BBU is now charging).
Test completed.
2. Charge the battery.
Allow the battery 24 to 48 hours to fully charge
before using the BBU system.
A fully charged BBU supplies 12V DC to the opener
for one to two days of normal operation during an
electrical power outage. If the battery voltage drops
too low, the battery will disconnect and the opener
will no longer operate under battery power.
After the electrical power has been restored, the
battery will recharge within 48 hours. Under normal
usage the battery will last 3 to 5 years.
To obtain maximum battery life and prevent damage,
disconnect the battery backup when the opener is
not in use for an extended period of time.
NOTE: Door operation may be limited until the
battery is fully charged.
Battery Backup
Unit (BBU)

12
Diagnostic LED
"-" NEGATIVE LABEL
"+" POSITIVE LABEL
15AMP FUSE
"+" POSITIVE TERMINAL
"-" NEGATIVE TERMINAL
BATTERY TO BE PLACED INTO
THE HOUSING WITH THE
TERMINALS AS SHOWN
RETAINING BRACKET
19
Battery Backup Unit (BBU) Diagnostics
GREEN ED:
All systems are normal.
• A solid LED light indicates the battery is fully
charged.
• A solid LED light indicates the battery is fully
charged.
NOTE: Battery does not have to be fully charged to
operate the motor unit.
ORANGE ED:
The motor unit has lost power and is operating off the
BBU.
• A solid LED indicates the opener is activating the
door and is operating off the BBU.
• A flashing LED indicates the battery is low.
• Once the power is restored the BBU will recharge. is
indicated by a flashing green LED.
RED ED:
An error has been detected and the BBU will
automatically shut off. The BBU will attempt to restart
by reconnecting to the battery. If the error is still
present it will shut itself off again. This process will
repeat every 5 minutes or until the error has been
resolved. This is used to prevent further draining of the
battery.
• If a red LED remains on when the power is restored
please call for service.
Replace Battery
• Unplug the BBU from the opener and remove the
screws holding the BBU to the wall.
• Remove the battery retaining bracket.
• Withdraw the battery from the housing and
disconnect the terminals.
• Reinstall the new battery in the reverse process,
taking care to connect the positive and negative
terminals correctly.
• Reconnect the BBU to the opener as in step 2 of the
previous page.
BATTERY BACKU UNIT E475M12V - CONTINUED

13
S ECIAL FEATURES (O TIONAL ACCESSORIES)
1. 12 VDC power output for external devices
2. The Protector SystemTM IR Beams - C77
3. Standby Power Unit (battery backup E475M-12V, included accessory)
20
rx
white/black
white
white/black
white
12 vdc
gnd
External
Device
Keyswitch or
push button
com
no
12V DC
TY ICAL WIRING DIAGRAM OVERDRIVETM (MRC950EVO) -
Information for Service ersonnel
21
1
3
2
12V DC
MOUNTING THE EVERCHARGE
STANDBY POWER UNIT (SPU)
• The SPU can be mounted to either the ceiling
or a wall within 0.9 m (3') of the opener.
• Position the SPU as desired to a structural
support (ceiling joist or wall stud).
• Attach the SPU to the support using the
mounting holes on either side of the SPU.
• Secure the SPU using the 1-1/2" lag screws
(2) provided with the SPU unit.
• Connect the SPU cord into the connector on
the bottom of the opener.
• ollow all instructions included with the
E475M-12V unit to test for proper operation
and testing of the SPU.

14
If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent or similarly qualified persons
in order to avoid hazard.
001A6621
041A6811-3
041B0603
001A6528
041B0640
001B6451-3S
041A7460
041D7403
041B0029
041B0641-2
026B0166
204D0250
22 S ARE ARTS
041A6811-3 Mount plate sub assembly (including motor)
041B0029 Sungear kit - Aluminium
041B0603 Front upper housing
041B0640 Base housing
041D7403 Service logic board
041A7460 Removable cover sub assembly
041B0641-2 Hinged access cove
204D0250 230V 105VA transformer
026B0166 Power Cord
001A6621 Clamp & bolt assembly
001B6451-3S Handle & pull rope assembly
001A6528 Absolute Position Encoder (APE)
13
12
8
7
9
16
E840M
E128M
760E
E1702M
774ANZ
E940M E943M E945M
10 11
45
E950M
E138M
23
E960M
E475M-12V
DMK1
23
NOTE: Only genuine Merlin accessories are approved for use with this opener. Generic compatible accessories are NOT approved for
use with this opener.
ACCESSORIES
(1) Model E128M Wireless wall button
(2) Model E138M Wireless wall button
(3) Model E960M 4 Channel remote control
(4) Model E950M 4 Channel remote control
(5) Model E940M 1 Channel visor remote control
(6) Model E943M 3 Channel visor remote control
(7) Model E945M 3 Channel mini remote control
(8) Model E840M Keyless entry system
(9) Model 774ANZ The rotector SystemTM
(10) Model E1702M Quick release lock
(11) Model 760E Outside keyswitch
(12) Model DMK1 Outside quick release (brick fix)
(13) Model E475M-12 V Standby ower Unit (battery back up)

DIAGNOSTIC UP DOWN SYMPTOM POSSIBLE CAUSE POSSIBLE RESOLUTON
CODE ARROW ARROW
1-1 1 FLASH 1 FLASH The garage door opener will The Protector System is not Check the Protector System is
not close and the lights will flash installed, connected, or installed and aligned correctly,
wires may be cut both LEDs are ON with no
obstruction between the beams.
1-2 1 FLASH 2 FLASHES The garage door opener will The Protector System wire Check the Protector System is
not close and the lights will shorted or reversed installed and aligned correctly, flash both LEDs are ON with no
obstruction between the beams.
1-3 1 FLASH 3 FLASHES Wall mounted door control The wires for the door control Check the door control wiring is
will not function are shorted or the door correct
control is faulty
1-4 1 FLASH 4 FLASHES The garage door opener will Misaligned or obstructed Check the Protector System is
not close the door and the Protector System installed and aligned correctly, lights flash both LEDs are ON with no
obstruction between the beams.
1-5 1 FLASH 5 FLASHES The garage door opener clicks Internal fault Contact service centre
but no movement The opener runs approximately Communication error to Contact service centre 150-200 mm and stops and/or reverses travel module
Your garage door opener is programmed for self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash the diagnostic codes.
DIAGNOSTIC CHART
TM
TM TM
TM
TM
TM
2-1 2 FLASHES 1 FLASH The garage door opener will not PCB memory corrupt Reset opener by turning the mains
OFF for 20 seconds Retest Opener
operate
2-2 2 FLASHES 2 FLASHES The garage door opener will not Reset opener by turning the mains
OFF for 20 seconds Retest Opener
operate
2-3 2 FLASHES 3 FLASHES The garage door opener will not
operate in battery mode Recharge battery
Reset opener by turning the mains OFF for 20 seconds Contact customer service
PCB Voltage test failure Battery failure - if fitted
15

16
DIAGNOSTIC UP DOWN SYMPTOM POSSIBLE CAUSE POSSIBLE RESOLUTON
CODE ARROW ARROW
3-3 3 FLASHES 3 FLASHES The garage door opener fails to Battery LED flashing green, Recharge Battery, contact
operate and the battery LED is charging circuit stops and starts service centre. constantly flashing green to drain causing battery charging
status
4-1 4 FLASHES 1 FLASH Door is closing, stops and Obstruction, binding or sticking Remove obstruction, service door.
reverses door
4-2 4 FLASHES 2 FLASHES The door stops while opening Obstruction, binding or sticking Remove obstruction, service door.
for no apparent reason door
4-3 4 FLASHES 3 FLASHES The door reverses for no Obstruction, binding or sticking Reset limits & force, service door.
apparent reason or after touching door the floor
4-4 4 FLASHES 4 FLASHES The door reverses for no apparent Obstruction, binding or sticking Reset limits & force, service door.
reason or after touching the floor door
4-5 4 FLASHES 5 FLASHES The opener runs approximately Communication error to travel
150-200 mm and stops and/or reverses module Reset limits & force contact
service centre
4-6 4 FLASHES 6 FLASHES The door reverses for no apparent Safety sensors were temporarily Remove obstruction, or realign
reason while travelling down obstructed or misaligned sensors
My garage door opener light(s) will not turn off when the door is open: The garage door opener is equipped with a feature that turns the light on when the safety reversing sensors have been obstructed. If staying on continually - Contact Customer Service Centre.
* Reprogram the remote control. * If the remote control will still not activate the door check the diagnostic
codes to ensure the garage door opener is working properly. My neighbour's remote control opens my garage door:
* Ensure the antenna wire is hanging down from the garage door opener. Erase the memory from your garage door opener and reprogram the
remote control(s).
These are additional troubleshooting issues that will not show up in the diagnostic codes:
My remote control will not activate the door:
2-4 2 FLASHES 4 FLASHES The garage door opener will not
operate by remote controls PCB radio receiver failure Reset opener by turning mains OFF
for 20 seconds, recode transmitters
2-5 2 FLASHES 5 FLASHES The garage door opener will not
operate PCB possible internal failure Reset opener by turning mains OFF
for 20 seconds, retest opener.

17
8. The door opens but will not close or reverses
while closing:
• Is something obstructing the door? Pull the manual
release handle. Operate the door manually. If it is
unbalanced or binding, call a trained door systems
technician.
• Clear any ice or snow from the garage floor area where
the door closes.
• Repeat the limit and force setting in section 11.
Repeat safety reverse test after adjustments.
9. The opener strains to operate door:
• The door may be out of balance or the springs may
be broken. Close the door and use the manual
release to disconnect the door. Open and close the
door manually. A properly balanced door will stay in
any point of travel while being supported entirely by
its springs. If it does not, disconnect the opener and
call a trained door systems technician.
10. The opener motor hums briefly, then will not
work:
• Check that the door is not in manual release mode
(refer section 8).
• The garage door springs may be broken. See above.
• If the problem occurs on the first operation of the
opener, door may be locked. Disable any door locks.
11. The opener will not operate due to power
failure:
• Use the manual release handle to disconnect the
door. The door can be opened and closed manually.
When power is restored, re-engage the opener (refer
section 8).
• If a Battery Back up Unit is connected, the opener
should be able to operate up to 20 times without
power.
12. The UP and DOWN arrows on the control panel
are flashing in sequence:
Check the diagnostic code on previous page
TROUBLESHOOTING
1. The opener will not operate from either the
ACTIVATION arrows or the transmitters :
• Does the opener have electric power? Plug a lamp into
the outlet. If it does not work, check the fuse box.
• Have you disabled all door locks? Review installation
instruction warnings on page 1.
• Is there a build-up of ice or snow under the door? The
door may be frozen to the ground. Remove any
restriction.
• The garage door spring may be broken. Have it
replaced.
2. Opener operates from the transmitter, but not
from the wired wall control terminals:
• Are the wiring connections correct?
3.The door operates from the ACTIVATION arrows
but not from the wireless wall control or
transmitter:
• Program the opener to match the transmitter code
(Refer to section 16). Repeat with all transmitters.
4. The transmitter has short range:
• Change the location of the transmitter in your car.
• Check to be sure the antenna on the bottom of the
opener extends fully downward.
• Some installations may have shorter range due to a
metal door, foil backed insulation, or metal garage
siding.
5. The garage door opens and closes by itself:
• Be sure that all transmitter push buttons are off.
• If the wired wall control terminals are installed, remove
the bell wire from the wired wall control terminals and
operate from theACTIVATION button or transmitter . If
this solves the problem, the wired wall control is faulty
(replace), or there is an intermittent short on the wire
between the wired wall control and the opener.
• Clear memory and re-program all wireless wall
controls and transmitters.
6. The door reverses and stops before opening
completely:
• Is something obstructing the door? Is it out of balance,
or are the springs broken? Remove the obstruction or
repair the door.
7. The door reverses for no apparent reason and
opener lights blink 10 times after reversing:
• Check the Protector SystemTM (IR Beams), if
installed. If the red light on the beam is flashing, the
alignment is incorrect.
DISAB ING THE PROTECTOR SYSTEM:
If the Protector System is no longer required, it is
necessary to deactivate the opener so that normal
operation can occur.
With the IR beams REMOVED.
• TURN O the mains power and ensure any battery
backup is also disconnected.
• PRESS and HOLD both the UP and DOWN arrow
buttons.
• TURN ON the mains power to the operator.
• HOLD both arrows until the courtesy lamp flashes 3
times and remains ON.
The Protector System is now deactivated. The door
should operate normally.

18
Battery of the remote control:
The batteries in the remote have an extremely long life.
If the transmission range decreases, the batteries must be replaced. Batteries are not covered by the warranty.
Replacing battery (CR2032):
RE LACE BATTERIES IN REMOTES
12VDC
Pb Cd Hg
To prevent SERIOUS INJURY OR DEATH: observe the fo owing instructions for the battery
- NEVER a ow sma chi dren near batteries.
- If battery is swa owed, immediate y notify doctor.
- Danger of exp osion if battery is rep aced improper y.
- Rep acement on y by identica or equiva ent type.
- Dispose of o d battery proper y. Batteries shou d not be treated as househo d waste. A consumers
are required by aw to dispose of batteries proper y at the designated co ection points.
- Never recharge batteries that are not meant to be recharged.
- Do not short-circuit batteries or take them apart.
- If necessary, c ean contacts on batteries and contacts
before oading.
- Never expose batteries to excessive heat such as sunshine, fire or the ike!
To replace battery for E945M & optional remote control transmitters - E943M & E940M, use a
screwdriver blade to pry open the case as shown. Insert battery positive side up.
To replace battery for optional remote control transmitter E950M, turn remote control around and open
the case with a screwdriver. Lift cover and lift control board below. Slide battery to one side and
remove. Observe polarity of battery!
Assemble again with a new battery in reverse process.
or
Carefully
RemoveBattery
(CR2032 x 1)