Linear LDCO800 Aligning the Infrared Safety Beam, Adjusting the Open and Close Limits

11 Aligning the Infrared Safety Beam

The safety beam has two components, a sender and a receiver. The sender produces a narrow infrared beam that travels across the bottom of the door opening to the infrared receiver. If an object blocks the infrared beam while the door is closing, the door will stop, then reverse and fully open (the operator’s light will flash three times).

13 Adjusting the Open and Close Limits

The limit settings control how far the door will open and close. Set the limits so the door opens just short of any door stops, and closes at the floor level. Out of the box, the operator is preset on its close limit and the open limit is preset for a 7-foot high door.

17 Using the Garage Door Operator

IMPORTANT USER SAFETY INSTRUCTIONS

  WARNING 

18 Garage Door Operator Maintenance

Weather conditions may affect the door operation which could require some re-setting of the operator’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.

As a safety feature, the operator will ignore signals from all remote controls if the door is open and the infrared safety beam is blocked or out of alignment. In this case, the door can be forced closed by pressing and holding the wall station’s up/down arrow pushbutton (be sure the door area is in clear view).

Use the wall station or a transmitter to test operate the door. If required, use the following steps to adjust the limits.

  CAUTION 

Set the open and close limits carefully. Setting

A MOVING GARAGE DOOR CAN CAUSE INJURY OR DEATH!

Every Month

1 With the door closed, pull the red release handle to

disconnect the operator from the door.

  WARNING 

Garage door hardware (springs, cables,

  WARNING 

With the door closed, disengage the trolley from the chain or belt during these alignment tests by pulling the red release handle.

Safety Beam Test

1Check that the operator has power.The green lights on the sender and receiver should be lit.

2If the receiver’s green light is on, but the red light is off, the receiver has power but is not detecting the infrared beam from the sender. The red light might flash when the beam is partially detected. This can be caused by mis-alignment or something blocking the beam. Adjust the safety beam sender and receiver while watching the receiver’s red light (stay out of the beam while aligning it). When the red light stays on, rotate the sender towards the ceiling and stop when the red light on the receiver begins to flicker. Rotate the sender back towards a horizontal position with the floor and stop as soon as the red light on the receiver lights solid. The beam is now properly aligned.

  WARNING 

Serious injury or death from a closing garage door may result because of failure to test and adjust safety reverse system. Repeat this test monthly and adjust as needed.

SAFETY BEAM INDICATORS

GREEN LIGHT
ON = POWER ON
OFF = POWER OFF	RED LIGHT

RED LIGHT

ON = BEAM ALIGNED, NO OBSTRUCTION

OFF = BEAM NOT ALIGNED, OR OBSTRUCTION

BLINKING = BEAM NEEDS BETTER ALIGNMENT

GREEN LIGHT

Adjusting the Open Limit

1Use the wall station or a transmitter to move the door to the open limit position.

2Press both the UP and LEARN buttons for three seconds. The green indicator and operator’s light will flash twice then stay on.

3If necessary, use the UP and DOWN buttons to jog the door at slow speed to fine-tune the open limit position.

4When the door is at the proper open limit position, press the LEARN button to store the setting and exit setup. The green indicator and the operator’s light will flash two times.

Adjusting the Close Limit

1	Use the wall station or a transmitter to move the door
	to the close limit position.
2	Press both the DOWN and LEARN buttons for three
	seconds. The red indicator and operator’s light will
	flash twice then stay on.
3	If necessary, use the UP and DOWN buttons to jog the
	door at slow speed to fine-tune the close limit position.

the limits beyond the distance that the door can travel could cause damage to the door, the door hardware, or operator.

ADJUSTING THE OPEN LIMIT

DOWNUP

EXAMINE THE SPOT WHERE

THE DOOR OPENS

ADJUSTING THE CLOSE LIMIT

TO REDUCE THE RISK OF DEATH OR SEVERE INJURY:

1READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.

2NEVER LET CHILDREN OPERATE, OR PLAY WITH DOOR CONTROLS! KEEP REMOTE CONTROL AWAY FROM CHILDREN!

3Always 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.

4NEVER GO UNDER A STOPPED, PARTIALLY OPEN DOOR.

5Test door operator 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 operator. Failure to adjust the operator properly may cause severe injury or death.

6If 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.

7KEEP GARAGE DOORS PROPERLY BALANCED. (See Garage Door Operator 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.

8SAVE THESE INSTRUCTIONS.

2	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.
3	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.

4To reconnect the operator, flip the release lever up and run the operator.

5Perform the Safety Beam Test (Section 11).

6Perform the Safety Reversal System Test as described in Section 15.

After Servicing the Operator

1	Perform the Safety Beam Test (Section 11).
2	Perform the Open and Close Limit Adjustments
	(Section 13).
3	Perform the Safety Reversal System Test (Section 15).

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 

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

TO DISCONNECT OPERATOR TO RECONNECT OPERATOR

PULL THE RED
RELEASE HANDLE	FLIP THE LEVER UP

SAFETY BEAM INDICATOR TABLE

GREEN ON	POWER ON
GREEN OFF	POWER OFF

ADJUSTING THE BEAM

1. ADJUST THE SENDER AND RECEIVER UNTIL THE RED INDICATOR LIGHTS SOLID

4 When the door is at the proper close limit position,

press the LEARN button to store the setting and exit

setup. The red indicator and the operator’s light will

flash two times.

UP	EXAMINE THE SPOT WHERE
	DOOR CLOSES
DOWN

Opening the Door

1 With the door in view, press the wall station’s UP/

DOWN ARROW button or the button assigned to the

operator on the remote control, or enter a valid access

code and press START/STOP on a remote keypad.

OPENING OR CLOSING THE DOOR
WALL STATION	REMOTE CONTROL
	REMOTE
	KEYPAD

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.

TO DISCONNECT		AND RAISE OR
THE OPERATOR			NOTICE
			IF DOOR BECOMES OBSTRUCTED,
		LOWER THE DOOR	PULL DOWN ON HANDLE
FROM THE
	NOTICE	TO RECONNECT
DOOR	IF DOOR BECOMES OBSTRUCTED,
	PULL DOWN ON HANDLE
		THE OPERATOR

RED ON	BEAM OK - NO BLOCKAGE
RED OFF	BEAM BLOCKED OR MIS-ALIGNED
RED FLASHING	BEAM ALIGNED POORLY

2. ADJUST SENDER UP UNTIL RECEIVER'S RED INDICATOR FLASHES

3. ADJUST SENDER DOWN

14 Automatic Door Force Setup

The operator automatically measures the door force throughout the entire travel of the door each time the operator cycles. The following steps are all that’s required to setup the safety reversal system.

2	When the operator is activated, the operator’s light will
	turn on and the door will begin to open.
3	The door will open until the open limit is reached. If an

ENTER AN

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

  WARNING 

Always perform the Safety Reversal System Test (see Section 15) after making any

�NOTE: If the receiver’s red light remains off, check

JUST UNTIL RECEIVER'S

RED INDICATOR LIGHTS SOLID

Automatic Door Force Setup

1 Be sure that the trolley latch is up and the door is

obstacle is encountered (operator’s light flashes four

times) while the door is opening, the door will stop.

PRESS THE	PRESS A REMOTE	ACCESS CODE
WALL STATION'S - OR -		- OR - AND PRESS
	CONTROL BUTTON

�NOTE: Too much or too little chain tension will cause

excessive sprocket noise.

adjustments to the operator.

for: 1) Dirt on the receiver’s lens, 2) Sunlight shining

into the receiver’s lens, 3) A short in the safety beam

wiring (from staples or at the operator terminals).

CHECKING FOR REVERSAL

connected to the operator.

2 Operate the door through four complete open and

close cycles.

DOOR FORCE SETUP

4 The operator’s light will stay on for about five minutes

after the door stops.

UP/DOWN ARROW START/STOP

Chain Adjustment

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

1 Hold the turnbuckle with a flat blade screwdriver and

ADJUSTING A CHAIN-DRIVE	TWIST
	TURNBUCKLE
	CHAIN

3	With the door closed and the operator disengaged
	from the door, press the wall station’s UP/DOWN
	ARROW button to move the traveler (the part on the
	belt or chain that the trolley engages with) to the up
	position (away from the door).
4	Push the wall station’s UP/DOWN ARROW button again.
	While the traveler is moving to the down position (toward
	the door), block the safety beam. THETRAVELER MUST

	THE TRAVELER MUST REVERSE
	WHEN THE BEAM IS INTERRUPTED
	DOWN
BLOCK THE BEAM	UP
WHILE THE TRAVELER
IS MOVING DOWN	TOWARD

  CAUTION 

Do not cycle the operator full travel without the door connected. The automatic door force setting will adjust to the unloaded condition and may trip the safety system when the door is reconnected.

4

4

OPERATE THE DOOR THROUGH

FOUR FULL OPEN AND CLOSE CYCLES

Closing the Door

1	With the door in view, press the wall station’s UP/
	DOWN ARROW button or the button assigned to the
	operator on the remote control, or enter a valid access
	code and press START/STOP on a remote keypad.
2	When the operator is activated, the operator’s light will
	turn on and the door will begin to close.

SAFETY LIGHTING

	loosen the two locknuts with a 7/16” end wrench.
2	Twist the turnbuckle to adjust the chain tension. Adjust
	the chain until the turnbuckle is sightly above the rail.
3	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

TURNBUCKLE	TIGHTEN CHAIN
LOCKNUTS
	LOOSEN
LOCKNUTS
LOOSEN
	HOLD TURNBUCKLE
TO HEAD LOCKNUTS	WITH FLAT BLADE
TIGHTEN	SCREWDRIVER TO
	BACKUP LOCKNUTS

STOP, THEN REVERSE TO THE UP POSITION. The

operator’s light and red light should flash three times.

5 Place an object in the path of the safety beam. Check

that constant pressure is required on the wall station’s

UP/DOWN ARROW button to cause the traveler

TOWARD	OPERATOR
	TRAVELER
DOOR

CHECKING FORCED CLOSURE FEATURE VERIFY THAT CONSTANT

15 Safety Reversal System Test

The operator determines that there is an obstruction if a higher than expected amount of force is detected during a door cycle. If an obstruction is encountered during a closing cycle, the operator and door will stop then fully open. If an obstruction is encountered during an opening cycle, the operator and door will stop.

3 The door will close until the close limit is reached. If an

obstacle is encountered (operator’s light flashes four

times), or the safety beam is interrupted (operator’s

light flashes three times) during closing, the door will

stop, then re-open.

WHENEVER OPERATING THE LIGHT WILL TURN ON FOR ABOUT 5 MINUTES

NOTE: A FLASHING LIGHT INDICATES TROUBLE

factory setting for the tension spring length is .9” long. If the tension spring is longer than 1”, adjust the belt.

1	Hold the traveler so the adjustment wheel is visible
	through the large slot.
2	Use a flat blade screwdriver to turn the adjustment

ADJUSTING A BELT-DRIVE		MEASURE THE TENSION
	ADJUSTMENT WHEEL	SPRING LENGTH
TRAVELER

to move toward the down position. Release the

pushbutton before the operator stops; check that the

traveler returns to the up position.

�NOTE: The garage door operator will not respond

to a CLOSE command from a radio transmitter if the

safety beam is blocked.

PRESSURE IS REQUIRED

ON THE WALL STATION'S

PUSHBUTTON TO MAKE

THE TRAVELER GO DOWN

PLACE AN OBJECT
IN THE BEAM'S PATH	RELEASE PUSHBUTTON

Safety Reversal System Test

1Lay a 2 x 4 board flat on the floor where it will be struck by the center of the door as it closes.

2Verify that the door reverses when it strikes the board. The door must reverse within two seconds after striking the board.

  WARNING 

TESTING THE SAFETY REVERSAL SYSTEM

TEST WITH SMALL OBSTACLE

THE DOOR MUST REVERSE

WITHIN 2-SECONDS AFTER

IMPACT WITH A 2 x 4 BOARD

4 The operator’s light will stay on for about five minutes

after the door stops.

STOPPING THE DOOR	WALL
	STATION
	REMOTE

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.

LOOSEN TIGHTEN

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

6 To reconnect the operator, flip the release lever up.

Raise the door manually until the operator reconnects.

BEFORE THE OPERATOR STOPS,

THE TRAVELER SHOULD

RETURN TO THE UP POSITION

Always perform the Safety Reversal System Test after making any adjustments to the operator.

2 x 4 BOARD LAID FLAT

Stopping the Door Mid-travel	KEYPAD
1 The door can be stopped immediately at any time
by pressing the wall station’s UP/DOWN ARROW

19 Field Reset

In installations where the door spring, door, or hardware 2 Release the buttons. The operator will reset force

12 Remote Controls

The operator is supplied with a three-button remote control (the second and third buttons can be used to control an

PERFORM THE SAFETY REVERSAL SYSTEM TEST MONTHLY!

UNDER CENTER OF DOOR

button, the remote control’s pushbutton, or press	REMOTE
the START/STOP button on a remote keypad (if the
	CONTROL
remote keypad was used to start the door).	THE DOOR CAN BE STOPPED

is being replaced, and the operator was already	settings and erase all set limits, but will still retain
programmed for the old door, reset the operator’s	all programmed transmitters in memory.
settings using the following steps.	3 AFTER PERFORMING A FIELD RESET, BOTH THE

additional operator 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 operator serves as an antenna for the remote controls. Do not cut off the wire or the remote controls will not operate well.

16 Adjusting the Force Factor (Installation Option, Normally Not Used)

The operator uses the peak force measured during each of the last four complete cycles plus a “force factor” to

2 The next time the operator is activated, the door will	AT ANY POSITION USING THE
	WALL STATION, REMOTE CONTROL,
move in the opposite direction.
	OR A REMOTE KEYPAD

1 Press and hold down the UP, DOWN, and LEARN	OPEN AND CLOSE LIMITS MUST BE ADJUSTED
buttons at the same time for ten seconds. The red	AND THE AUTOMATIC DOOR FORCE SETUP
and green indicators and the operator’s light will flash

  WARNING 

Children operating or playing with a garage door operator 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 operator only when the door is clearly visible, free of obstructions and adjusted properly.

To Add or Remove a Remote Control

1	Press the operator’s LEARN button. The operator’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.
2	Send a signal from a remote. The operator’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

PREPARING TO ADD OR REMOVE A REMOTE		1
		PRESS THE
		LEARN BUTTON
2 THE RED LIGHT WILL	REMOTE MUST BE ENTERED
GLOW FOR 15 SECONDS	WHILE RED LIGHT IS ON

ADDING OR REMOVING A REMOTE
1
SEND A SIGNAL
FROM A REMOTE
2	THE OPERATOR'S LIGHT AND

calculate the maximum allowed force setting for the current door cycle. If the calculated maximum force setting is exceeded during the current door cycle, the operator reacts to the obstruction. As door hardware conditions change over time with weather and wear, the calculation of the maximum door force setting using the four cycle running average will compensate for the current conditions of the installation.

The door force is preset for the lowest amount of pressure on an obstacle to detect an obstruction. THE FACTORY SETTING IS OPTIMIZED FOR MOST INSTALLATIONS.

Changing the Force Factor Setting

As an installation option, the operator’s “force factor” can be adjusted to change the amount of pressure exerted on an obstacle before the operator reacts to the obstruction. 1 Press both the UP and DOWN buttons for three seconds. The red and green indicators and operator’s

light will flash twice.

2Use the UP or DOWN buttons to set the force factor. Pressing the UP button increases the force factor, pressing the DOWN button decreases the force factor.

FORCE FACTOR INDICATOR TABLE

Vacation Lock for Additional Security

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

2Slide the wall station’s LOCK switch to the unlocked position to return the operator to normal operation.

PREVENTING REMOTES

FROM OPENING THE DOOR

LOCK UNLOCK

SLIDE THE VACATION SWITCH

DOWN TO LOCK (REMOTES DISABLED)

OR UP TO UNLOCK (REMOTES NORMAL)

twice.	COMPLETED BEFORE THE OPENER WILL
	FUNCTION.

20 Troubleshooting

LAMP FLASHES	PROBLEM	CAUSE	REMEDY
TROUBLE CODE
1 FLASH	No problem	Remote control entered into	Add any additional remote controls
		memory	(MegaCode™ type only)
			Check wall station wires. Be sure both are
2 FLASHES	Door won’t close	Shorted wall station wires	connected to the terminal screws. Check for
			a staple in the wall station wires. Remove
			any staples compressing the wire.
3 FLASHES	Door won’t close	Safety beam obstacle	Check for obstacles. Align the safety beam
			(Section 11)
	Door reverses		Check for obstruction or binding of garage
4 FLASHES	or won’t open or	Open or Close force exceeded	door. Perform field reset (Section 19) if
	close		necessary.
5 FLASHES	Door won’t open	Remote was activated while	Unlock vacation switch on wall station

if a remote was removed.

3 Repeat Steps 1 & 2 for any additional remote controls.

To Remove All Remote Controls

1Press and hold the operator’s LEARN button for ten

PRESS A	RED LIGHT WILL FLASH ONCE IF A
	REMOTE IS ADDED, THE OPERATOR'S
BUTTON - OR -
	LIGHT AND THE RED LIGHT
ENTER A CODE
	WILL FLASH FOUR TIMES
AND PRESS START/STOP	IF A REMOTE IS REMOVED

GREEN ON	LOW FORCE FACTOR
RED & GREEN ON	MEDIUM FORCE FACTOR
RED ON	HIGH FORCE FACTOR

3 After selecting the force factor, press the LEARN

	CONTROLLING THE
Controlling the Operator’s Light	OPERATOR'S LIGHT

1The operator’s light can be lit by pushing the wall

	from transmitter	vacation switch was locked
6 FLASHES	Motor ran longer	Mechanical or electronic failure	Call Technical Services Group for assistance
	than 30 seconds
7 FLASHES	Limit error	Encoder has detected error or	Re-set the open and close limits. If error
		down limit set above up limit.	occurs again, call Technical Services Group.

seconds or more.

2 Release the LEARN button. The red light and operator’s light will blink three times signaling that all of the remotes in the operator’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 the steps above.

Testing

1Before testing the remote control, straighten out the operator’s antenna wire so it points up.

2Stand clear of the door, press the remote control’s button and verify that the operator starts. PRESS THE

REMOTE CONTROL’S BUTTON AGAIN TO STOP THE DOOR MID-TRAVEL.

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.

1Open the remote’s case and remove the circuit board.

2Replace old batteries with two Type 2032 batteries.

3Re-assemble the remote.

REMOVING ALL REMOTES	2 THE RED LIGHT
	AND OPERATOR’S LIGHT
	WILL BLINK 3 TIMES
	SIGNALING THAT
	ALL REMOTES
	WERE REMOVED
1
PRESS THE LEARN BUTTON
FOR 10 SECONDS OR MORE
REPLACING A REMOTE'S BATTERY
1	2
TWIST DIME IN	LIFT OFF
SLOT TO OPEN
	THE TOP OF
CASE
	THE CASE
3
CAREFULLY	NOTE: THE CIRCUIT BOARD WILL FIT ONLY ONE
REMOVE THE
	WAY INTO THE CASE. ALIGN THE PLASTIC POST
CIRCUIT BOARD
	IN THE CASE WITH THE HOLE IN THE CIRCUIT BOARD
4	5
	INSERT TWO NEW
REMOVE OLD
	TYPE 2032 BATTERIES
BATTERIES AND	PLUS SIDE UP THEN
DISPOSE OF THEM PROPERLY	REASSEMBLE UNIT

button to store the setting and exit setup. The red and green indicators and the operator’s light will flash two times. (If the force factor is not set within one minute, the operator will return to normal operation at its previous force factor setting.)

4After changing the force factor setting, perform the Safety System Reversal Test.

station’s LIGHT button. The light will remain on until the LIGHT button is pressed again or the operator is cycled.

2If the operator’s light is on, pushing the wall station’s

LIGHT button will turn the operator’s light off.	PRESS THE LIGHT	THE LIGHT WILL STAY ON UNTIL
	BUTTON TO TURN THE	THE LIGHT BUTTON IS PRESSED
	LIGHT ON OR OFF	OR THE OPERATOR IS CYCLED

Disconnecting the Door from the Operator	IN CASE OF POWER FAILURE
	OR IF DOOR BECOMES OBSTRUCTED
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.
2 The disconnected door can be opened or closed	PULL THE RED
manually.	RELEASE HANDLE			FLIP THE LEVER UP
3 To re-connect the operator, flip the release lever up.	TO DISCONNECT
				AND RAISE OR
	THE OPERATOR				IF DOOR BECOMES OBSTRUCTED,
					PULL DOWN ON HANDLE
					NOTICE
Raise or lower the door manually until the operator	FROM THE		NOTICE	LOWER THE DOOR
		PULL DOWN ON HANDLE		TO RECONNECT
reconnects.	DOOR	IF DOOR BECOMES OBSTRUCTED,
				THE OPERATOR

FCC NOTICE

Changes or modifications not expressly described in this manual or approved by the manufacturer could void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Industry Canada and Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

LIMITED WARRANTY

This Linear product is warranted to the original consumer against defects in material and workmanship for:

MODEL	ELECTRONICS	MECHANICAL	MOTOR	BELT	CHAIN
LDCO800	1 year	5 years	Lifetime	Lifetime	5 years

This product is warranted to the original consumer against defects in material and workmanship for the periods mentioned above. Linear will repair, or at its option, replace, any device that it finds requires service under this warranty, and will return the repaired or replaced device to the consumer at Linear’s cost. Devices must be sent to Linear for service at owner’s expense. This warranty does not apply to damage to the product from negligence, abuse, abnormal usage, misuse, accidents, normal wear or tear or due to failure to follow Seller’s instructions, or arising from improper installation, storage or maintenance. In no event will Linear be responsible for incidental, compensatory, punitive, consequential, indirect, special or other damages. The remedies provided by this warranty are exclusive. Some states do not allow the exclusion or limitation of incidental and consequential damages, so the above limitation or exclusion may not apply to you. Any warranties implied by law are limited to the time periods set forth above. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

For warranty service and shipping instructions contact Linear at the phone number shown below. In order to be protected by this warranty, save your proof of purchase and send a copy with equipment should repair be required. All products returned for warranty service require a Return Product Authorization Number (RPA#). Contact Linear Technical Services at 1-800-421-1587 for an RPA# and other important details.

Copyright © 2010 Linear LLC 228355 C