Linear MDR-U manual

MDR-U

CAUTION

IMPORTANT SAFETY INSTRUCTIONS

RISK OF ELECTRICAL SHOCK

WARNING

Read these instructions.

Keep these instructions.

DO NOT OPEN

TO REDUCE THE RISK OF SEVERE

Heed all warnings.

Universal

5. Do not use this apparatus near water.

MegaCode™

INJURY OR DEATH

Follow all instructions

6. Clean only with dry cloth.

Receiver

EXPLANATION OF GRAPHIC WARNING SYMBOLS

1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS

Do not install near any heat sources such as radiators, heat registers, stoves, or other

This

symbol is intended to alert the user

to the presence

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

apparatus (including ampliﬁ ers) that produce heat.

Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized

un-insulated “dangerous voltage” within the product’s enclosure that

3. ALWAYS KEEP MOVING DOOR IN SIGHT AND AWAY FROM PEOPLE AND OBJECTS UNTIL IT IS COMPLETELY CLOSED.

plug has two blades with one wider than the other. A grounding type plug has two

For Garage Door Operator

may be of sufﬁ cient magnitude to constitute a risk of electric shock.

NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.

blades and a third grounding prong. The wide blade or the third prong are provided for

Remote Control

✶ WARNING! To reduce the risk of ﬁre or electric shock, do not

4. NEVER GO UNDER A STOPPED, PARTIALLY OPEN DOOR.

your safety. If the provided plug does not ﬁ t into your outlet, consult an electrician for

expose this device to rain, water, or wet locations.

CAUTION

Installation Instructions

Unplug this apparatus during lightning storms or when unused for long periods of time.

This

symbol is intended to alert the user

to the presence

replacement of the obsolete outlet.

important operating and maintenance (Servicing) instructions in the

TO REDUCE THE RISK OF ELECTRIC SHOCK, DISCONNECT POWER TO THE RECEPTACLE BEFORE INSTALLING OR

10. Refer all servicing to qualiﬁ ed service personnel. Servicing is required when the

literature accompanying the device.

REMOVING THE UNIT. WHEN REMOVING RECEPTACLE COVER SCREW, COVER MAY FALL ACROSS PLUG PINS OR

apparatus has been damaged in any way, such as power-supply cord or plug is

(760) 438-7000 • FAX (760) 438-7043

RECEPTACLE MAY BECOME DISPLACED. USE ONLY WITH DUPLEX RECEPTACLE HAVING CENTER SCREW. SECURE UNIT

damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus

USA & Canada (800) 421-1587 & (800) 392-0123

IN PLACE BY RECEPTACLE COVER SCREW.

has been exposed to rain or moisture, does not operate normally, or has been dropped.

Toll Free FAX (800) 468-1340

www.linearcorp.com

PRODUCT DESCRIPTION

COMPONENT LOCATIONS

DETERMINE THE BEST RECEIVER LOCATION

CHECK FOR INTERFERENCE FROM OTHER RECEIVERS

The Model MDR-U Universal MegaCode™ Receiver is designed for use as a

AC POWER

BEST

WATCH THE

replacement radio control receiver in

garage door

operator installations. The

RETAINING

TERMINALS

IF THE LEARN INDICATOR IS FLASHING

LEARN & SIGNAL

RECEPTION

MDR-U RECEIVER'S

receiver is self-contained, not requiring an external transformer or power from the

SCREW

INDICATOR

A PLUG ON THE CEILING WILL GIVE THE BEST RADIO

LEARN INDICATOR

WITHOUT ACTIVATING ANY TRANSMITTERS,

INTERFERENCE MAY BE COMING FROM

garage door operator. The receiver plugs directly into a 120 VAC outlet. A retaining

RECEPTION (UNLESS THE OPERATOR'S RECEIVER

A NEARBY OPERATOR'S RECEIVER

CAUSES SOME INTERFERENCE)

screw is provided to secure the receiver to the outlet.

Two screw terminals on the receiver are for connection to the garage operator’s

pushbutton input. A dry contact, Form “A”, relay in the receiver will provide a

TEST IF THE OPERATOR IS THE SOURCE OF THE

.5-seconds closure across the terminals when the receiver activates. A ﬂ exible wire

GOOD

INTERFERENCE BY UN-PLUGGING THE OPERATOR FROM

antenna extends from the receiver’s case to provide maximum radio reception.

POWER

RECEPTION

MegaCode™ receivers and transmitters do not contain a typical “coding switch”.

IF THE LEARN INDICATOR STOPS FLASHING, THE OPERATOR

Each transmitter is pre-set at the factory to a unique code. The receiver is

IS THE SOURCE OF INTERFERENCE

programmed by sending a signal from the transmitter, storing the transmitter’s code

A PLUG ABOVE

1. IF THE OPERATOR HAS AN EXTERNAL RADIO RECEIVER,

into the receiver’s memory. The receiver will retain its memory, even without power.

DISCONNECT POWER TO IT

A PLUG CLOSE

THE GROUND LEVEL

The receiver will activate only from these “memorized” transmitters. Each MDR-U

2. IF THE OPERATOR HAS A BUILT-IN RADIO RECEIVER, CUT

WILL PROVIDE

TO GROUND LEVEL

OPERATOR'S

THE COMPONENT THAT FEEDS POWER TO THE RECEIVER

receiver can be programmed to activate from up to ten MegaCode™ transmitters.

POOR

GOOD RADIO

ANTENNA

WILL CAUSE

OR CUT OFF THE OPERATOR'S ANTENNA AND REMOVE THE

The learn button and

learn indicator

are used for

entering and erasing the

RELAY OUTPUT

LEARN

RECEPTION

POOR RADIO

RECEPTION

ANTENNA

RECEIVER'S TUNING SLUG

RECEPTION

transmitters in the receiver’s memory. The learn indicator also displays signals

TERMINALS

BUTTON

NOTE: IT IS RECOMMENDED TO DISABLE THE OPERATOR'S

1 AMP @ 32 VDC

being received and can be used for troubleshooting.

MAXIMUM

RECEIVER TO PREVENT THE OLD REMOTES FROM ACTIVATING IT

CONNECT THE RECEIVER TO THE OPERATOR

INSTALL THE RECEIVER

PROGRAM AND TEST THE RECEIVER

LINEAR LIMITED WARRANTY

CONNECT 2-CONDUCTOR WIRE TO THE

ADDING TRANSMITTERS

ERASING TRANSMITTERS

This Linear product is warranted against defects in material and workmanship for twelve (12) months. The Warranty

DISCONNECT POWER TO THE GARAGE

REMOVE THE OUTLET'S COVER

Expiration Date is labeled on the product. This warranty extends only to wholesale customers who buy direct

1. PRESS AND RELEASE THE

1. PRESS AND HOLD DOWN THE LEARN BUTTON

MDR-U RECEIVER RELAY OUTPUT TERMINALS

DOOR OPERATOR BEFORE PROCEEDING

from Linear or through Linear’s normal distribution channels. Linear does not warrant this product to consumers.

PLATE SCREW AND PLUG THE

LEARN BUTTON

2. THE LEARN INDICATOR WILL

Consumers should inquire from their selling dealer as to the nature of the dealer’s warranty, if any. There are no

UL NOTE: ALL LOW VOLTAGE CLASS 2 CABLE

RECEIVER INTO THE 110 VAC OUTLET

2. THE LEARN INDICATOR WILL LIGHT

obligations or liabilities on the part of Linear Corporation for consequential damages arising out of or in

USED WITH THE OPERATOR MUST BE UL LISTED

FLASH COUNTING THE NUMBER

connection with use or performance of this product or other indirect damages with respect to loss of property,

TYPE CL2, CL2P, CL2R, OR CL2X OR OTHER CABLE

IF THERE'S ROOM IN MEMORY

OF TRANSMITTERS IN MEMORY

revenue, or proﬁt, or cost of removal, installation, or reinstallation. All implied warranties, including implied

(UP TO 10 TRANSMITTERS WILL FIT)

WITH EQUIVALENT OR BETTER ELECTRICAL,

NOTE: BE SURE THAT THE OUTLET

3. CONTINUE HOLDING DOWN

warranties for merchantability and implied warranties for ﬁ tness, are valid only until Warranty Expiration Date as labeled

MECHANICAL, AND FLAMMABILITY RATINGS

IS NOT CONTROLLED BY A WALL SWITCH

3. ACTIVATE THE TRANSMITTER

THE LEARN BUTTON

on the product. This Linear Corporation Warranty is in lieu of all other warranties express or implied.

WHILE THE INDICATOR IS LIT

All products returned for warranty service require a Return Product Authorization Number (RPA#). Contact Linear

WALL PUSHBUTTON

(WITHIN 15 SECONDS)

4. 5 SECONDS AFTER THE COUNT

Technical Services at 1-800-421-1587 for an RPA# and other important details.

ROUTE THE WIRE AND CONNECT IT

CONNECTION

4. INDICATOR FLASHES

THE INDICATOR WILL FLASH ONCE

IMPORTANT !!!

SHOWING THE MEMORY ERASURE

TO EITHER THE WALL PUSHBUTTON OR

FROM

Linear radio controls provide a reliable communications link and ﬁ ll an important need in portable wireless signaling.

DIRECTLY TO THE DOOR OPERATOR

OPERATOR

5. REPEAT STEPS FOR ADDITIONAL

5. RELEASE THE BUTTON, THE UNIT

However, there are some limitations which must be observed.

(POLARITY NOT IMPORTANT)

TRANSMITTERS

ENTERS LEARN MODE FOR 15 SECONDS

• For U.S. installations only: The radios are required to comply with FCC Rules and Regulations as Part 15 devices. As

DIRECT OPERATOR

SECURE THE

PUSHBUTTON

such, they have limited transmitter power and therefore limited range.

WIRE WITH

MDR-U

• A receiver cannot respond to more than one transmitted signal at a time and may be blocked by radio signals that

CONNECTION

INSULATED

occur on or near their operating frequencies, regardless of code settings.

SECURE THE RECEIVER

STAPLES

• Changes or modiﬁ cations to the device may void FCC compliance.

TO THE OUTLET WITH

• Infrequently used radio links should be tested regularly to protect against undetected interference or fault.

THE RETAINING SCREW

TEST RECEIVER

• A general knowledge of radio and its vagaries should be gained prior to acting as a wholesale distributor or dealer,

and these facts should be communicated to the ultimate users.

ACTIVATE EACH TRANSMITTER

ANTENNA

• This device complies with FCC Part 15 and Industry Canada Rules and Regulations. Operation is subject to the following two

3 2 1

OPERATOR TERMINALS 1 & 2

AND VERIFY THAT THE RECEIVER

conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received,

(OR THE SAME TERMINALS

AND DOOR OPERATOR ACTIVATES

including interference that may cause undesired operation.

THE WALL PUSHBUTTON USES)

220675 A