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1. Position the cable tension monitor as shown

The cable tension monitor should be located
as close to the drum as possible.

NOTE:

There must be no obstructions in the installation area that

prevent the cable tension monitor or the cable itself from closing
completely when slack is detected.

2. Make sure cable tension monitor is located over a wood support

member.

NOTE: 

If the cable tension monitor can not be mounted into wood with

the lag screws provided, it can be mounted into 25mm (1”) or greater
pasterboard using the wall anchors (2) and the #8 hex head 
screws (2) provided in the hardware bag.

3. Mark and drill 5mm (3/16”) pilot holes for screws (pilot holes are not

required for anchors).

4. Attach the cable tension monitor to the wall using the hardware

provided. Make sure that the roller is on top of the cable.

5. Run bell wire to motor unit. Use insulated staples to secure wire in

several places.

6. Connect bell wire to the green quick-connect terminals (polarity

is not important).

NOTE: 

Cable must have tension through entire travel. Make sure there is

no slack in cable on opposite side of the door during normal operation. If
this condition exists, adjust cables as required.

18

16

19

INSTALLATION STEP 4

Attach the Cable Tension Monitor 

This operator comes standard with the cable tension monitor. It is

supplied as a device to monitor the cables for ANY slack that may

occur and will reverse the door when excessive slack is detected,

eliminating service calls.The cable tension monitor 

MUST

be

connected and properly installed before the door operator will move

in the down direction. 

NOTE: 

The cable tension monitor contains a 1kOhms resistor to check it

is connected. Jumper the terminals with an equivalent resistor if the
cable tension monitor is not used. Attention: Danger to life if the gate is
not otherwise protected against cable breakage.

NOTE: 

The cable tension monitor is shipped for left side installation. It is

preferred that the cable tension monitor be installed on the same side of
the door as the operator.  If required, it can be mounted on the opposite
side of door. Remove the snap-ring holding the roller in place and
reassemble it on the opposite side of the cable tension monitor.

16

17

18

19

If permanent wiring is required by your local code, refer to the
following procedure.

To make a permanent connection through the 22mm hole in the back of
the motor unit (according to local code):

• Remove the opener from the torsion bar, remove cover screws and

set the cover aside.

• Remove the attached green ground terminal.

• Cut black and white wires and strip away 1.3 cm of insulation, 7.6 cm

before spade terminals.

• Remove the power cord from unit.

• Install a 90

o

conduit or flex cable adapter to the 22mm hole. Reinstall

opener to torsion bar.

• Run wires through conduit, cut to proper length and strip insulation.

• Attach with wire nuts (not provided).

• Properly secure wire under plastic ties so that wire does not come in

contact with moving parts.

• Reinstall the cover.

To avoid installation difficulties, do not run the opener at this time.

To prevent possible SERIOUS INJURY or DEATH from a falling door:

• If possible, use emergency release handle to disengage door ONLY

when door is CLOSED. Weak or broken springs or unbalanced door
could result in an open door falling rapidly and/or unexpectedly.

• NEVER use emergency release handle unless the doorway is clear

of persons and obstructions.

INSTALLATION STEP 6 (Optional)

Installing the Wireless Wall control (128LM)

Control must be mounted out of the reach of children at a height of
1.5m with an unobstructed view of the door.

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16

17

INSTALLATION STEP 5

Electrical Requirements

To avoid installation difficulties, do not run the opener at this time.

To reduce the risk of electric shock, your garage door opener has a
grounding type plug with a third grounding pin. This plug will only fit into
a grounding type outlet. If the plug doesn't fit into the outlet you have,
contact a qualified electrician to install the proper outlet.

(3) provided. Drill 4mm (5/32") holes and use anchors (6) if installing into
drywall. A convenient place is beside the service door and out of reach of
children.

Run the bell wire up the wall and across the ceiling to the garage door
opener. Use insulated staples (5) to secure wire. The receiver quick
connect terminals are located behind the light lens of the opener.
Connect the bell wire to the terminals as follows: white/red to red (1) and
white to white (2).

Operation of the Door Control

Press to open or close the door. Press again to stop the door while
moving.

• Ensure your 3800 operator is switched off whilst

installing your wireless door control to prevent accidental

activation

• Remove the cover from the 128LM.

• Mount 128LM as shown using the screws provided if

mounting into a wall box (not provided).

• If mounting directly on the wall use wall anchors

(provided) to fix unit to the plasterboard wall.

• Replace the cover plate and 

affix the warning label

adjacent the wall controller.

Installing Door Control  21

a

Locate door control where the garage door is visible, away from

 

door and door hardware and out of the reach of children. Mount at

 

least 1,5 m (5 feet) above the floor

Serious personal injury from a moving garage door may result from

 

misuse of opener. Do not allow children to operate the door control

 

or remote control transmitter.

Permanently fasten the caution label permanently to the wall near

 

the door control as a reminder of safe operating procedures.

 

There 

are 2 terminals (1) on the back of the door control (2). Strip about

 

6mm 

(1/4") of insulation from bell wire (4). Separate wires enough to

 

connect 

the white/red wire to RED terminal screw 1 and the white wire to

 

WHT

 

terminal screw 2.

Fasten the door control to an inside garage wall with sheet metal screws 

Summary of Contents for LM3800TXSA

Page 1: ...Garage Door Operator Model LM3800TXSA Chamberlain GmbH Alfred Nobel Strasse 4 D66793 Saarwellingen www liftmaster eu info liftmaster eu Optional Accessory Available en ar LM3800TXSA...

Page 2: ...oor balanced Do not let the garage door opener compensate for a binding or sticking garage door Sticking or binding doors must be repaired Garage doors door springs cables pulleys brackets and their h...

Page 3: ...uded in the carton This operator is compatible with Doors that use a torsion bar springs and a door no more than 4 2m high 80mm 178mm drums NOT TO BE USED on tapered drums over 152mm High lift and sta...

Page 4: ...w 8x1 2x Self Tapping Screw 10 32 4x Wall Anchor 6x Handle 1x Rope 1x Insulated Staples 20x Bracket 2x Bit 1x Bell Wire 093B0867 5 6 ASSEMBLY STEP 1 Attach the Collar to the Motor Unit To avoid instal...

Page 5: ...erator by sliding the collar over the torsion bar until pilot holes align with bracket Securely tighten collar screws that attach to the torsion bar to 16Nm 19Nm of torque Securely tighten both set sc...

Page 6: ...h conduit cut to proper length and strip insulation Attach with wire nuts not provided Properly secure wire under plastic ties so that wire does not come in contact with moving parts Reinstall the cov...

Page 7: ...parate refer to FLA230 manual Connection of Door in Door Switch 16200LM optional accessory Prevents operator from starting if door in door is open See drawing for wiring Additional material is require...

Page 8: ...ld be protruding through the track Operate the door in the open direction The power door lock should retract before the door begins to move Operate the door in the down direction When the door reaches...

Page 9: ...d aligned 1 If open the door will close If closed it will open 2 If closing the door will stop 3 If opening the door will stop 4 If the door has been stopped in a partially open position it will close...

Page 10: ...ensor Short travel 150 200mm Unplug unit to reset Try to operate motor unit check diagnostic code If it is still flashing 5 times and motor unit moves 150 200mm 6 8 The unit s APE Absolute Positioning...

Page 11: ...f not move the position of the mounting bracket 15 Power lock makes noise when operating Call Chamberlain Liftmaster dealer for replacement power lock TROUBLESHOOTING 1 The operator doesn t operate fr...

Page 12: ...oise level 57dB Travel Rate 24rpm down 36rpm up Safety Personal Push button and automatic stop in down direction Push button and automatic stop in up direction Electronic Automatic force adjustment El...

Page 13: ...ar E1702 2 3 50 TheProtector System 40 400 1 5...

Page 14: ...2 ar EverCharge Protector System Protector System 4 2 80 178 152 4 2 5 5 16 2 25 1 64 76 205 25 100 1 CM475 EverChargeTM SPU 5 2 2 1...

Page 15: ...3 ar 1 2 3 2 1 1 16 19 8 1 480LM LM3800A 14 10 x1 7 8 6 x 1 2 8 x1 2 10 32 4 6 1 1 20 2 1 3 4 6 5 9 9a 6 093B0867...

Page 16: ...4 ar 1 2 3 4 5 1 8 6 7 8 1 5 9 10 11 50 1 2 1 2 3 1 5 2 1 2 3 4 25 1 8 4 16 19 3 5 1 2 3 8 4 5 6 3 11 10 12 13 14 15...

Page 17: ...5 ar 22 1 3 7 6 o 4 90 22 1 1 6 128 LM 1 5 3800 128 LM 128 LM 2 25 1 2 8 2 1 5 5 3 5 16 3 4 5 6 5 1 2 6 1 4 4 1 2 3 4 5 32 6 5 1 2 16 17 18 19 20 21...

Page 18: ...LA230 16200 LM 7 Evercharge SPU CM475 1 SPU 80 2 SPU SPU SPU SPU 2 SPU SPU 3 CM475 SPU 4 5 6 16 1 7 1 7 2 50 8 Protector System 400 40 Protector System 400 The Protector System The Protector System ar...

Page 19: ...7 ar 2 1 2 LED 3 LED 3 3 9 5 50 1 2 1 4 x 2 4 1 2 50 1 2 1 4 x 2 3 4 4 32 30 31...

Page 20: ...6 100 64 128 LM 1 2 3 4 5 6 7 Chamberlain Protector System IR Chamberlain Protector System IR 5 78 LM LED 1 10 45 3 4 3 5 1 2 5 ar 8 33 34 35...

Page 21: ...LED 3 4 LED 5 RPM 9 30 60 LED RPM 150 200 5 150 200 6 8 APE Chamberlain 1 LED 30 2 LED 30 3 30 LED 4 LED 5 LED ar 9 36 37 38...

Page 22: ...LED 6 9 1 2 LED LED LED LED 3 4 5 6 7 4 9 2 8 LED 4 2 9 LED 5 10 11 12 EverCharge 20 13 1 2 1 14 15 Chamberlain Liftmaster www liftmaster eu ar 10...

Page 23: ...9747 E 4 78 LM 5 770 EV The Protector System 6 FLA1 LED 7 16200 LM 230 240 50 40 145 5 10 57 24 36 4 2 14 5 5 16 11 64 433 92 Chamberlain Protector System ar 11 39 40 41 220 240 Volt 50 60Hz E53349 1...

Page 24: ...114A4864B...

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