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15

ADJUSTMENT STEP 2

Setting the Force

The force setting button is located on the front panel.

The force setting measures the amount of force

required to open and close the door.

1. Locate the orange button on the unit (Figure 1).
2. Push the orange button twice to enter unit into

Force Adjustment Mode (Figure 2). The LED

(Indicator Light) will flash quickly.

3. Push the transmitter, wireless wall button or

multi-function door control (Figure 3). The door

will travel to the DOWN (close) position. Push

the transmitter, wireless wall button or multi-

function door control again, the door will travel

to the UP (open) position. Push the transmitter,

wireless wall button or multi-function door

control a third time to send the door to the

DOWN (close) position.

The LED (Indicator Light) will stop flashing when

the force has been learnt.
The unit has learnt the forces required to open and

close your door.
The door must travel through a complete cycle, UP

and DOWN, in order for the force to be set

properly. If the unit cannot open and close your

door fully, inspect your door to ensure that it is

balanced properly and is not sticking or binding.

See page 4, “Preparing your door.”

Orange
Button

Indicator
Light

Black
Button

BLACK

ORANGE

Push Orange button
twice to enter
unit into Force
Adjustment Mode

Figure 3

Figure 2

Figure 1

or

Without a properly installed safety reversal

system, persons (particularly children) could be

SERIOUSLY INJURED or KILLED by a closing the

door.

• NEVER learn forces or limits when door is

binding or sticking. Repair door first

•Too much force on door will interfere with

proper operation of safety reversal system.

•After ANY adjustments are made, the safety

reversal system MUST be tested. Door MUST

reverse on contact with 40mm (1 1/2”) high

obstacle on floor.

ADJUSTMENT STEP 3

Test Cable Tension Monitor

If your cable tension monitor has been activated

the unit will not open (the LED will flash 9 times).

See (Figure 1) page 9.

ADJUSTMENT STEP 4

Test Powered Door Lock

TEST

• With the door fully closed, the powered door lock

bolt should be protruding through the track.

• Operate the door in the open direction. The

powered door lock should retract before the door

begins to move.

• Operate the door in the down direction. When

the door reaches the fully closed position, the

powered door lock should automatically activate

to secure the door.

NOTE: If the powered door lock does not function, the

lock can be manually released by sliding the manual

release handle to the open position.

Summary of Contents for Merlin MJ3800

Page 1: ...rating Instructions Optional Accessory Available See Page 10 for the New www chamberlainanz com Owners Copy Please keep these instructions for future reference This manual contains IMPORTANT SAFETY in...

Page 2: ...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 i...

Page 3: ...n one carton which contains the opener and the parts illustrated below Note that accessories will depend on the model purchased If anything is missing carefully check the packing material 5 3 1 10 11...

Page 4: ...just 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 the door BEFORE installing and operating the...

Page 5: ...side that meets the requirements listed below Must have minimum of 64mm 2 1 2 between the wall and the center of the torsion bar Must have minimum of 76mm 3 between the ceiling and the center of tors...

Page 6: ...ted 6 Collar Screw Collar Screw Set Screw Collar Screw Collar Screw Set Screw ASSEMBLY STEP 2 Attach Mounting Bracket to Opener Loosely attach slotted side of mounting bracket to the same side of the...

Page 7: ...all a trained door systems technician if the door binds sticks or is out of balance An unbalanced door might not reverse when required Opener MUST be mounted at a right angle to the torsion bar to avo...

Page 8: ...6 Plug connector into the opener Figure 2 NOTE Lock must be mounted within 3m 10 of the power head Overhand Knot Emergency Release Handle Overhand Knot Rope Opener Emergency Release Cable 016 Warning...

Page 9: ...osite side of the cable tension monitor 1 Position the cable tension monitor as shown Figures 1 and 2 The cable tension monitor should be located as close to the drum as possible NOTE There must be no...

Page 10: ...adjacent the wall controller Fix the emergency door release label adjacent to the opener INSTALLATION STEP 7 Mounting the Evercharge Standby Power Unit SPU not provided If the optional CM475 Standby p...

Page 11: ...ing nut Run wires from both sensors to the opener as shown in Figure 5 Use insulated staples to secure the wire to the wall and ceiling Connect both sets of wires to the opener terminals as shown page...

Page 12: ...ner quick connect terminals white to white and white black to grey Figure 6 page 11 TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1 If the sending eye indicator LEDs are both flashing after installatio...

Page 13: ...AUTOMATIC CLOSE TIMER FUNCTION Note Requires the Chamberlain Protector SystemTM IR sensors to be installed If Protector SystemTM IR sensors is installed only to enable the timer to close function firs...

Page 14: ...button until the door reaches the desired UP open position Figure 2 NOTE Check to be sure the door opens high enough for your vehicle to pass under 3 Push the transmitter wireless wall button or multi...

Page 15: ...reparing your door Orange Button Indicator Light Black Button BLACK ORANGE Push Orange button twice to enter unit into Force Adjustment Mode Figure 3 Figure 2 Figure 1 or Without a properly installed...

Page 16: ...ustment Steps 1 and 2 Programming the Limits and Forces Repeat the test When the door reverses on the 40mm 1 1 2 obstacle remove the obstruction and run the opener through 3 or 4 complete travel cycle...

Page 17: ...emblies and other hardware ALL of which are under EXTREME tension MUST be made by a trained door systems technician 12 ALWAYS disconnect electric power to the door opener BEFORE making ANY repairs or...

Page 18: ...ilable with this accessory Once you have enrolled your users into the C379 you can program the unit into your opener Using the orange LEARN button 1 Press and release the orange learn button 1 on open...

Page 19: ...this temporary PIN will work press the number of hours up to 255 then press star button OR 3 To set the number of times this temporary PIN will open door press the number of times up to 255 then pres...

Page 20: ...n 3 C77 Protector systemTM IR Beams 4 041A6388 Collar with set screws 5 C945 3ch rolling code transmitter 6 041A4582 Emergency release rope handle assembly 041B4494 1 2 Conductor bell wire white white...

Page 21: ...pener does not activate disconnect multi function door control wires from opener Momentarily short across red and white terminals with jumper wire If opener activates replace multi function door contr...

Page 22: ...sensor See Installation Step 8 If the opener LED is not flashing and it is a new installation See Adjustment Step 2 For an existing installation see below Repeat the safety reverse test after the adju...

Page 23: ...ve The wireless wall button CM128 press and hold the large round button down until the door starts to move The Keyless Entry See Accessories Must be programmed before use See Programming Multi Functio...

Page 24: ...eglect abuse wear and tear accident electrical storm excessive use or conditions other than normal domestic use This warranty does not cover any problems with or relating to the garage door or garage...

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