Merlin MT3850EVO User Manual

®

®

gomerlin.com.au
gomerlin.co.nz

MT3850EVO

with Security+2.0

Sectional Garage Door Opener

INSTALLATION AND OPERATING INSTRUCTIONS

Owner’s Copy: Keep these Instructions for Future Reference.

Please read this manual and the enclosed safety materials carefully!

Periodic checks of the opener are required to ensure safe operation.

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START BY READING THESE IMPORTANT SAFETY INSTRUCTIONS

ARNING

W

• 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.

KEEP THESE INSTRUCTIONS

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
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, safety goggles 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.
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.

Automatic Drive - Keep away from the area of

the door since it may operate unexpectedly.

This appliance is not intended for use by persons
(including children) with reduced physical,
sensory or mental capabilities, or lack of
experience or knowledge, unless they have been
given supervision or instruction concerning use of
the appliance by a person responsible for their
safety.

This opener should not be installed in a damp
or wet space exposed to weather.

The opener must not be used on a wicket door
(door within a door)

The Protector System
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.

Wall controls must be installed in a location
where the garage door is visible, at a height of
at least 1.5 m, out of the reach of children and
away from moving parts. 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 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. Keep remote controls away

from children.

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.

TM

must be used for all

Warning: 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 the event of power failure.

CONTENTS PAGE

SAFETY INSTRUCTIONS . . . . . . . . . . .1

PREPARING THE DOOR . . . . . . . . . . .2

TOOLS REQUIRED . . . . . . . . . . . . . . . .2

PLANNING . . . . . . . . . . . . . . . . . . . . . . .3

HARDWARE PROVIDED . . . . . . . . . . . .4

ASSEMBLY SECTION . . . . . . . . . . . .5-7

INSTALLATION SECTION . . . . . . . .8-16

INSTALL THE BATTERY AND

CONNECT ELECTRIC POWER . . . . .16

ADJUSTMENT SECTION . . . . . . . .17-18

INSTALL WIRELESS WALL

CONTROL (E128M). . . . . . . . . . . . . . .18

CONTENTS PAGE

INSTALL THE PROTECTOR

SYSTEM (IR BEAMS) . . . . . . . . . . . 19

TIMER-TO-CLOSE . . . . . . . . . . . . . . . .20

WIRELESS PROGRAMMING . . . .21-22

TROUBLESHOOTING . . . . . . . . . . . . 23

DIAGNOSTICS . . . . . . . . . . . . . . . 24-25

USING YOUR GARAGE OPENER . .26

CARE OF YOUR OPENER . . . . . . . . .26

SPECIFICATIONS . . . . . . . . . . . . . . . .26

ACCESSORIES . . . . . . . . . . . . . . . . . .27

REPLACEMENT PARTS . . . . . . . .27-28

WARRANTY . . . . . . . . . . . . . . . . . . . . .29

1

Preparing your garage door

Pliers

Wire Cutters

Claw Hammer

Hack Saw

Screwdriver

Adjustable End Spanner

Sockets and Wrench

Drill

Tape Measure

2

1

Stepladder

Pencil

Drill Bits

Carpenter's
Level (optional)

efore you begin:

B

• Disable locks.

• Remove any ropes connected to garage door.

• Complete the following test to make sure your
arage door is balanced and is not sticking or binding:

g

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 (20 Kgf is the absolute maximum
allowable to raise or lower the door in any position).

If your door binds, sticks, or is out of balance, call a
qualified door technician.

Max. door mass
130 kg
(spring balanced).

Max. door curtain

16.5 m

2

To prevent possible SERIOUS INJURY or DEATH:

• ALWAYS call a qualified door 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 the garage door opener to
avoid entanglement.

To prevent damage to the garage door and opener:

• ALWAYS disable locks BEFORE installing and operating the
opener.

• ONLY operate the garage door opener at 230 - 240 V, 50 Hz or
battery power to avoid malfunction and damage.

Sectional Door

Tools needed

During assembly, installation and adjustment of the opener, instructions will call for hand tools as illustrated
below.

2

Safety
Reversing Sensor

S

upport bracket &
fastening hardware
i

s required.

R

efer page 12.

— — — — — — — —

Header Wall

F

INISHED CEILING

T

orsion

Spring

Safety
Reversing Sensor

Gap between floor and bottom
of door must not exceed 6 mm

Access
Door

Wall­mounted
Door
Control

Opener

V

ertical
Centreline
of Door

Planning

dentify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to

I
your installation. Additional materials may be required. You may find it helpful to refer back to this page and the
accompanying illustration as you proceed with the installation of your opener.

SECTIONAL DOOR INSTALLATION

3

Carton Inventory

Straight Door
Arm Section

Curved Door
Arm Section

Safety Labels
and
Literature

Header Bracket

Belt Pulley Cover

Door Brackets

MT3850EVO Opener
with Twin Light Lenses

Internal Battery

Trolley

N

O

T

I

C

E

Rope &

Handle

Hanging Bracket

Grease

Sectional Rails

Spring

Merlin
E945M 3-Button
Mini-Remote Control

Hardware Bag

E840M Wireless Keypad

x 2

+

Merlin
E128M 2-Button Wireless
Wall Control

+

Opener Carton

Belt Pack &
Inner Trolley

Rail Braces

One Piece Rail

Header Sleeve
Assembly

Rail Cartons

Max. 40Watt
E27 Light Bulb x2

Instruction
Manual

Your garage door opener and rail are packed in two separate cartons. The Whisper Drive MT3850EVO Opener Carton
contains the opener, it’s fitting hardware and accessories. The Rail Carton contains the rail and it’s hardware as illustrated
below. If anything is missing, carefully check the packing material. Parts may be stuck in the foam.

4

ASSEMBLY STEP 1

Direction Arrow

Header End

Rail Assembly

Pulley Bracket

Inner Trolley

DOOR

Rail Assembly

Wood

Rail Section

Brace

Rail Section

Connector Slot

Trolley Connector

Inner Trolley Assembly

Assemble the Sectional Rail (if used)

If using 1-Piece Rail Proceed to Step 5

o avoid installation difficulties, do not run the

T
garage door opener until instructed to do so.

• Place rail pieces on flat surface for assembly (all four
ections are interchangeable).

s

• Slide rail brace onto rail section.

• Connect rail by sliding rail brace onto next rail section.

• Tap rail assembly on piece of wood until rail sections

are flush (repeat with remaining rail sections until rail
assembly is complete).

ASSEMBLY STEP 2

Install the Belt

• Remove belt from carton and lay it out on the floor, (be

careful not to allow the belt to twist).

• Hook the trolley connector into the connector slot on

the inner trolley assembly.

ASSEMBLY STEP 3

Insert the Belt into the Rail

• Slide pulley bracket and inner trolley into back (opener

end) of rail assembly, ensuring the pulley bracket is

inserted as shown with arrow pointing toward front
(header end) of the rail assembly.

• Push Pulley Bracket through to the Header End of the

rail.

5

ASSEMBLY STEP 4

Flat Washer

Spring

Header Sleeve
Assembly

Carriage Bolt

Carriage Bolt

Header End

Pulley Bracket

Slot

Trolley

Release Arm

Rail Assembly

D

O

O

R

Sh

i

m Brac

k

e

t

Bel

t

Pul

l

ey

Rail Assembly

Belt

Assemble the Header Sleeve

• Insert carriage bolt head into the Pulley Bracket slot

and retain by pushing the pulley bracket back into the
rail.

• Install the carriage bolt thread through the header

leeve assembly.

s

• Install the flat washer and spring assembly onto the

carriage bolt, do not completely tighten onto thread.

• Slide header sleeve assembly onto front (header end)

of rail.

ASSEMBLY STEP 5

Attach the Trolley to the Rail
Assembly

• Slide outer trolley into the back (opener end) of the

rail assembly. Be sure the end with the trolley release
arm is heading in direction of opener. Slide outer
trolley down rail until it engages with inner trolley.

• Move the engaged trolley assembly to the midpoint of

the rail, then turn the rail assembly or one-piece rail
over ready to fasten to opener.

ASSEMBLY STEP 6

Attach the Rail to the Opener

• Holding belt out of the way.

• Slide the rail assembly onto shim bracket until rail

assembly is securely fastened to the opener.

• Wrap the belt around the belt pulley ensuring the belt

engages the teeth of the belt pulley.

6

S

c

r

e

wd

r

i

v

e

r

Nu

t Ri

n

g

S

p

a

n

n

e

r

S

p

r

i

n

g

Nu

t

He

a

d

e

r

S

l

e

e

v

e

Nut Ring Trolley

Nut Ring

Trolley

25 mm 32 mm

BEFORE AFTER RELEASE

ASSEMBLY STEP 7

Hex Screws

Belt Pulley Cover

Mounting Plate

Opener Belt Pulley

Hex Screw

Set Belt Tension

• Thread spring nut onto the carriage bolt until finger

tight. Insert a screwdriver tip into one of the slots of the
nut ring and brace it firmly against the header sleeve.

• Place a spanner on the square end of the spring nut,

slightly rotate nut about 1/4 turn clockwise until nut ring
is released against header sleeve.

This sets spring for optimum belt tension. Belt may slip off
pulley if belt is too loose. If belt does slip, re-tighten spring
nut by turning nut clockwise a half turn.

Do NOT over-tighten belt.

ASSEMBLY STEP 8

Attach the Belt Pulley Cover

• Grease the Belt and Pulley liberally with the grease

provided in the hardware bag.

• Position the belt pulley cover over the opener belt

pulley so the three holes in the cover align with the
three holes in the mounting plate. Attach with hex
screws provided.

HARDWARE

To avoid possible SERIOUS INJURY to fingers from moving
garage door opener:

• ALWAYS keep hands clear of belt pulley while operating opener.

• Securely attach belt pulley cover BEFORE operating.

7

H

eader Wall

Vertical Centreline
o

f Garage Door

L

evel

(optional)

Timber Brace

T

imber brace

S

tructural

S

upports

O

PTIONAL
CEILING
M

OUNT
FOR
HEADER
B

RACKET

Unfinished
C

eiling

INSTALLATION STEP 1

Header Wall

Sectional door with curved track

Highest Point
of Travel

Door

50 mm

Track

Determine the Header Bracket
Location

To prevent possible SERIOUS INJURY or DEATH:

• Header bracket MUST be RIGIDLY fastened to structural
support on header wall or ceiling, otherwise garage door might
not reverse when required. DO NOT install header bracket over
plasterboard wall.

• Concrete anchors MUST be used if mounting header bracket to
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 qualified door technician if garage door binds,
sticks, or is out of balance. An unbalanced garage door might
not reverse when required.

1. Close the door and mark the inside vertical centreline
of the garage door.

2. Extend the line onto the header wall above the door.

3. Open your door to the highest point of travel as shown.
Draw an intersecting horizontal line on the header wall
above the high point 50 mm to 75 mm above the high

point.

This height will provide travel clearance for the top
edge of the door.

NOTE: If the available height above the highest
point of your door is less than recommended, use
the maximum height possible (as long as the door
does not contact the rail), or refer to page 9 for
ceiling installation.

8