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2  Remote Controls

This opener is supplied with a three-button remote control (the second and third buttons can be used to control an 
additional opener or gate if it contains a Linear MegaCode™ receiver). Additional single and multi-button remote 
controls can be purchased. The short wire on the back of the opener serves as an antenna for the remote controls. 
Do not cut off the wire or the remote controls will not 
operate well.

To Add or Remove a Remote Control 

Press the opener’s LEARN button. The opener’s light 
and red light will flash once and turn on for about 
15 seconds. 

A remote must be added or removed 

while the red light is still on.

Send a signal from a remote. The opener’s light and 
the red light will flash once if a remote was added, or 
the opener’s light and the red light will flash four times 
if a remote was removed.

Repeat Steps 1 & 2 for any additional remote controls.

To Remove all Remote Controls

Press and hold the opener’s LEARN button for ten 
seconds or more.

Release the LEARN button. 

The red light and 

opener’s light will blink three times signaling that 
all of the remotes in the opener’s memory were 
erased.

 The red light will turn off, then turn on for 15 

seconds. A remote control can be entered during this 
time using Step 2 above.

Testing

Before testing the remote control, straighten out the 
opener’s antenna wire so it points up.

2  Stand clear of the door,

 press the remote control’s 

button and verify that the opener starts.

Replacing a Remote Control’s Batteries

When the red light on the remote glows dimly, or fails 
to light at all when the remote is activated, the batteries 
need replacing.

Open the remote’s case and remove the circuit board.

Replace old batteries with two Type 2032 batteries.

Re-assemble the remote.

3  Garage Door Opener Maintenance

Weather conditions may affect the door operation which 
could require some re-setting of the opener’s adjustments. 
Doors may swell and become heavier during wet periods, 
door hinges and rollers might bind during cold periods. To 
insure safe operation of the door, perform the following 
tests, including any additional test steps described.

Every Month

With the door closed, pull the red release handle to 
disconnect the opener from the door.

From outside the garage, slowly open the door 
manually all the way, and then close it all the way. 
Notice if there is any binding, sticking or rubbing. The 
door should move smoothly in both directions.

Raise the garage door about halfway up. Carefully 
release the door and see if the door balances. It 
should stay in place. Close the door.

� 

NOTE:

 If the garage door is unbalanced or the 

door travel isn’t smooth, have a qualified garage door 
professional adjust or repair the door.

To reconnect the opener, flip the release lever up and 
run the opener.

Perform the Safety Beam Test (Section 4).

Perform the Safety Reversal System Test as described 
in Section 8.

After Servicing the Opener

Perform the Safety Beam Test (Section 4).

Perform the Open and Close Limit Adjustments 
(Section 5).

Perform the Safety Reversal System Test (Section 8).

Every 6 Months

Check the belt or chain tension.

• 

For belt-drive rails, examine the length of the tension 
spring in the traveler. It should be about 1” long.

• 

For chain-drive rails, examine the spacing between 
the turnbuckle and the rail. The turnbuckle should be 
slightly above the rail.

� 

NOTE:

 Too much or too little chain tension will cause 

excessive sprocket noise.

Chain Adjustment

If necessary, use the following steps to adjust the chain.

Hold the turnbuckle with a flat blade screwdriver and 
loosen the two locknuts with a 7/16” end wrench.

Twist the turnbuckle to adjust the chain tension. Adjust 
the chain until the turnbuckle is sightly above the rail.

Hold the turnbuckle with a flat blade screwdriver and 
tighten the two locknuts with a 7/16” end wrench.

Belt Adjustment

The tension spring in the traveler keeps the belt taut. The 
factory setting for the tension spring length is .9” long. If 
the tension spring is longer than 1”, adjust the belt.

Hold the traveler so the adjustment wheel is visible 
through the large slot.

Use a flat blade screwdriver to turn the adjustment 
wheel to compress the tension spring until its length 
is between .9” and 1” long.

Every Year

Check the door hardware for lubrication needs. Lubricate 
door hinges, rollers and bearings according to door 
manufacturer’s recommended procedures.

MODEL LDCO801 
BELT-DRIVE OR CHAIN-DRIVE 
DC MOTOR GARAGE DOOR OPENER

HOMEOWNER’S INSTRUCTIONS 

For Sectional Type Doors

IMPORTANT SAFETY NOTES

Please read the instructions carefully! This garage door opener is designed to provide safe and reliable service if installed 
and tested as described in these instructions. A garage door is the largest mechanical appliance in a residence. Care 
must be taken to prevent injury or death during installation and operation of the garage door and garage door opener.

THE FOLLOWING FORMATS ARE USED FOR SAFETY NOTES IN THESE INSTRUCTIONS.

1  Using the Garage Door Opener

Opening the Door

With the door in view, press the wall station’s UP/
DOWN ARROW button, the button assigned to the 
opener on the remote control, or enter a valid access 
code and press START/STOP on a remote keypad.

When the opener is activated, the opener’s light will 
turn on and the door will begin to open.

The door will open until the open limit is reached. If 
an obstacle is encountered (opener’s light flashes four 
times) while the door is opening, the door will stop.

The opener’s light will stay on for about five minutes 
after the door stops.

Closing the Door

With the door in view, press the wall station’s UP/
DOWN ARROW button or the button assigned to the 
opener on the remote control, or enter a valid access 
code and press START/STOP on a remote keypad.

When the opener is activated, the opener’s light will 
turn on and the door will begin to close.

The door will close until the close limit is reached. If 
an obstacle is encountered (opener’s light flashes four 
times), or the safety beam is interrupted (opener’s light 
flashes three times) during closing, the door will stop, 
then re-open.

The opener’s light will stay on for about five minutes 
after the door stops.

Stopping the Door Mid-travel

1  The door can be stopped immediately at any time 

by pressing the wall station’s UP/DOWN ARROW 
button, the remote control’s pushbutton, or press 
the START/STOP button on a remote keypad (if the 
remote keypad was used to start the door).

2  

The next time the opener is activated, the door will 
move in the opposite direction.

Vacation Lock for Additional Security

Slide the wall station’s LOCK switch to the locked 
position to prevent remote controls from opening the 
door after the door is completely closed. The remotes 
can close the door, but not open it. The door can still 
be opened or closed by using the wall station’s UP/
DOWN ARROW pushbutton.

� 

NOTE:

 To signal that the vacation switch is locked, 

the opener’s light and red light will flash five times if a 
remote is activated in an attempt to open the door.

Slide the wall station’s LOCK switch to the unlocked 
position to return the opener to normal operation.

Controlling the Opener’s Light

The opener’s light can be lit by pushing the wall 
station’s LIGHT button. The light will remain on until 
the LIGHT button is pressed again or the opener is 
cycled.

If the opener’s light is on, pushing the wall station’s 
LIGHT button will turn the opener’s light off.

Disconnecting the Door from the Opener

1  

With the door in any position (preferably closed), 
carefully pull the red release handle. 

USE CAUTION 

IF THE DOOR IS OPEN, THE DOOR MAY DROP.

The disconnected door can be opened or closed 
manually.

3  

To reconnect the opener, flip the release lever up. 
Raise or lower the door manually until the opener 
reconnects.

IMPORTANT USER SAFETY INSTRUCTIONS

  WARNING 

A MOVING GARAGE DOOR CAN CAUSE INJURY OR DEATH! 

TO REDUCE THE RISK OF DEATH OR SEVERE INJURY:

1  READ AND FOLLOW ALL INSTRUCTIONS.
2  Use this operator only with sectional overhead doors no more than 10 ft. tall.
3  NEVER LET CHILDREN OPERATE, OR PLAY WITH DOOR CONTROLS! KEEP REMOTE CONTROL 

AWAY FROM CHILDREN!

4  Always keep moving door in sight and away from people and objects until it is completely closed. NO 

ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.

5  NEVER GO UNDER A STOPPED, PARTIALLY OPEN DOOR.
6  Test door opener monthly. The garage door MUST reverse on contact with a 1-1/2 inch object (or a 2x4 

board laid flat at the center of the door) on the floor. If adjusting either the force or the limit of travel, 
re-test the door opener. Failure to adjust the opener properly may cause severe injury or death.

7  If possible, use the red emergency release handle only when the door is closed. Use caution when 

using this release with the door open. Weak or broken springs may cause the door to fall rapidly, 
causing injury or death.

8  KEEP GARAGE DOORS PROPERLY BALANCED. (See Garage Door Opener Maintenance) An 

improperly balanced door could cause severe injury or death. Have a qualified service person make 
repairs to cables, spring assembly and other hardware.

9

 

SAVE THESE INSTRUCTIONS.

THE DOOR SHOULD
BALANCE WITHOUT
GOING UP OR DOWN

CHECKING THE DOOR BALANCE

TEST WITH SMALL OBSTACLE

THE DOOR MUST REVERSE
WITHIN 2-SECONDS AFTER
IMPACT WITH A 2 x 4 BOARD

2 x 4 BOARD LAID FLAT
UNDER CENTER OF DOOR

TESTING THE SAFETY REVERSAL SYSTEM

 WARNING 

This type of warning note is used to indicate 
possible mechanical hazards that may cause 
serious injuries or death.

  CAUTION 

This type of warning note is used to indicate 
the possibility of damage to the garage door or 
garage door opener.

 WARNING 

The garage door opener must not be installed 
and used on an unbalanced door. The opener’s 
internal door force sensor will not function 
properly on an unbalanced door. Risk of serious 
injury or death may result.

 WARNING 

Garage door hardware (springs, cables, 
brackets, pulleys, etc.) are under extreme 
pressure and tension. DO NOT ATTEMPT TO 
LOOSEN, TIGHTEN OR ADJUST ANY DOOR 
HARDWARE. CALL A QUALIFIED GARAGE DOOR 
INSTALLATION PROFESSIONAL!

 WARNING 

Always perform the entire Safety Reversal 
System Test (see Section 8) after making any 
adjustments to the opener.

IF DOOR BECOMES OBSTRUCTED,

PULL DOWN ON HANDLE

NOTICE

IF DOOR BECOMES OBSTRUCTED,

PULL DOWN ON HANDLE

NOTICE

TO DISCONNECT OPENER

PULL THE RED
RELEASE HANDLE
TO DISCONNECT
THE OPENER FROM
THE DOOR

FLIP THE LEVER UP
AND RAISE OR
LOWER THE DOOR
TO RECONNECT
THE OPENER

TO RECONNECT OPENER

 WARNING 

Children operating or playing with a garage 
door opener can injure themselves or others. 
The garage door could cause serious injury 
or death. Do not allow children to operate the 
remote control(s) or the wall station. A moving 
garage door could injure or kill someone under 
it. Activate the opener only when the door is 
clearly visible, free of obstructions and adjusted 
properly.

SEND A SIGNAL

FROM A REMOTE

THE OPERATOR'S LIGHT AND

RED LIGHT WILL FLASH ONCE IF A

REMOTE IS ADDED, THE OPERATOR'S

LIGHT AND THE RED LIGHT

WILL FLASH FOUR TIMES

IF A REMOTE IS REMOVED

1

2

ADDING OR REMOVING A REMOTE

PRESS A

BUTTON

- OR -

ENTER A CODE

AND PRESS START/STOP

PRESS THE LEARN BUTTON

FOR 10 SECONDS OR MORE

1

2

REMOVING ALL REMOTES

THE RED LIGH

AND OPERATOR’S LIGHT

T

WILL BLINK 3 TIMES

SIGNALING THAT

ALL REMOTES

WERE REMOVED

PRESS THE
LEARN BUTTON

REMOTE MUST BE ENTERED
WHILE RED LIGHT IS ON

2

PREPARING TO ADD OR REMOVE A REMOTE

1

THE RED LIGHT WILL
GLOW FOR 15 SECONDS

TURNBUCKLE
LOCKNUTS

TO OPENER LOCKNUTS

TIGHTEN

LOCKNUTS

LOOSEN

HOLD TURNBUCKLE
WITH FLAT BLADE
SCREWDRIVER TO
BACKUP LOCKNUTS

TWIST

TURNBUCKLE

CHAIN

TIGHTEN

CHAIN

LOOSEN

ADJUSTING A CHAIN-DRIVE

PRESS THE

WALL STATION'S

UP/DOWN ARROW

PRESS A REMOTE

CONTROL BUTTON

OPENING OR CLOSING THE DOOR

- OR -

- OR -

ENTER AN

ACCESS CODE

AND PRESS

START/STOP

WALL STATION

REMOTE CONTROL

REMOT

E

KEYPAD

WALL
STATION

REMOTE
KEYPAD

THE DOOR CAN BE STOPPED

AT ANY POSITION USING THE

WALL STATION, REMOTE CONTROL,

OR A REMOTE KEYPAD

STOPPING THE DOOR

REMOTE
CONTROL

LOCK

UNLOCK

PREVENTING REMOTES

FROM OPENING THE DOOR

SLIDE THE VACATION SWITCH

DOWN TO LOCK (REMOTES DISABLED)

OR UP TO UNLOCK (REMOTES NORMAL)

CONTROLLING THE

OPENER'S LIGHT

PRESS THE LIGHT
BUTTON TO TURN THE
LIGHT ON OR OFF

THE LIGHT WILL STAY ON UNTIL
THE LIGHT BUTTON IS PRESSED
OR THE OPENER IS CYCLED

IF DOOR BECOMES OBSTRUCTED,

PULL DOWN ON HANDLE

NOTICE

IF DOOR BECOMES OBSTRUCTED,

PULL DOWN ON HANDLE

NOTICE

IN CASE OF POWER FAILURE

OR IF DOOR BECOMES OBSTRUCTED

PULL THE RED
RELEASE HANDLE
TO DISCONNECT
THE OPENER FROM
THE DOOR

FLIP THE LEVER UP
AND RAISE OR
LOWER THE DOOR
TO RECONNECT
THE OPENER

PROFESSIONAL INSTALLATION BY:

4

5

6

1

2

3

USE COIN OR VISOR 
CLIP IN SLOT TO 
OPEN CASE

REPLACING THE REMOTE CONTROL BATTERY

CARFULLY REMOVE
THE BOARD

LIFT OFF TOP 
OF CASE

REMOVE OLD 
BATTERY AND
DISPOSE OF
PROPERLY

INSERT NEW
CR2032 
BATTERY
PLUS SIDE UP

RE-ASSEMBLE 
REMOTE CONTROL

ADJUSTING A BELT-DRIVE

TIGHTEN

LOOSEN

TURN THE ADJUSTMENT
WHEEL UNTIL THE TENSION
SPRING IS ABOUT 1" LONG

ADJUSTMENT WHEEL

MEASURE THE TENSION
SPRING LENGTH

TRAVELER

WHENEVER OPERATING
THE LIGHT WILL TURN ON
FOR ABOUT 5 MINUTES

NOTE: A FLASHING

LIGHT INDICATES

TROUBLE

SAFETY LIGHTING

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