Linear MDR-U User Manual

MDR-U

Universal MegaCode Receiver

For Garage Door Operator Remote Control

Installation Instructions

PRODUCT DESCRIPTION

The Model MDR-U Universal MegaCode™ Receiver is designed for use as a replacement radio control receiver in garage door operator installations. The receiver is self-contained, not requiring an external transformer or power from the garage door operator. The receiver plugs directly into a 120 VAC outlet. A retaining 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 .5-seconds closure across the terminals when the receiver activates. A ﬂ exible wire antenna extends from the receiver’s case to provide maximum radio reception. MegaCode™ receivers and transmitters do not contain a typical “coding switch”. Each transmitter is pre-set at the factory to a unique code. The receiver is programmed by sending a signal from the transmitter, storing the transmitter’s code into the receiver’s memory. The receiver will retain its memory, even without power. The receiver will activate only from these “memorized” transmitters. Each MDR-U receiver can be programmed to activate from up to ten MegaCode™ transmitters. The learn button and learn indicator are used for entering and erasing the transmitters in the receiver’s memory. The learn indicator also displays signals being received and can be used for troubleshooting.

™

(760) 438-7000 • FAX (760) 438-7043

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

Toll Free FAX (800) 468-1340

www.linearcorp.com

CAUTION

RISK OF ELECTRICAL SHOCK

DO NOT OPEN

EXPLANATION OF GRAPHIC WARNING SYMBOLS

This symbol is intended to alert the user to the presence of un-insulated “dangerous voltage” within the product’s enclosure that may be of sufﬁ cient magnitude to constitute a risk of electric shock.

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

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

This symbol is intended to alert the user to the presence of important operating and maintenance (Servicing) instructions in the literature accompanying the device.

IMPORTANT SAFETY INSTRUCTIONS

WARNING

TO REDUCE THE RISK OF SEVERE

INJURY OR DEATH

1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS

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

3. 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.

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

CAUTION

TO REDUCE THE RISK OF ELECTRIC SHOCK, DISCONNECT POWER TO THE RECEPTACLE BEFORE INSTALLING OR REMOVING THE UNIT. WHEN REMOVING RECEPTACLE COVER SCREW, COVER MAY FALL ACROSS PLUG PINS OR RECEPTACLE MAY BECOME DISPLACED. USE ONLY WITH DUPLEX RECEPTACLE HAVING CENTER SCREW. SECURE UNIT IN PLACE BY RECEPTACLE COVER SCREW.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

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

apparatus (including ampliﬁ ers) that produce heat.

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

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

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

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

replacement of the obsolete outlet.

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

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

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

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

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

COMPONENT LOCATIONS DETERMINE THE BEST RECEIVER LOCATION CHECK FOR INTERFERENCE FROM OTHER RECEIVERS

RETAINING

SCREW

ANTENNA

AC POWER TERMINALS

RELAY OUTPUT

TERMINALS

1 AMP @ 32 VDC

MAXIMUM

LEARN & SIGNAL

INDICATOR

LEARN

BUTTON

POOR

RECEPTION

A PLUG ON THE CEILING WILL GIVE THE BEST RADIO RECEPTION (UNLESS THE OPERATOR'S RECEIVER CAUSES SOME INTERFERENCE)

A PLUG CLOSE TO GROUND LEVEL WILL CAUSE POOR RADIO RECEPTION

BEST

RECEPTION

GOOD

RECEPTION

A PLUG ABOVE THE GROUND LEVEL WILL PROVIDE GOOD RADIO RECEPTION

WATCH THE MDR-U RECEIVER'S LEARN INDICATOR

OPERATOR'S

ANTENNA

NOTE: IT IS RECOMMENDED TO DISABLE THE OPERATOR'S RECEIVER TO PREVENT THE OLD REMOTES FROM ACTIVATING IT

IF THE LEARN INDICATOR IS FLASHING WITHOUT ACTIVATING ANY TRANSMITTERS, INTERFERENCE MAY BE COMING FROM A NEARBY OPERATOR'S RECEIVER

TEST IF THE OPERATOR IS THE SOURCE OF THE INTERFERENCE BY UN-PLUGGING THE OPERATOR FROM POWER

IF THE LEARN INDICATOR STOPS FLASHING, THE OPERATOR IS THE SOURCE OF INTERFERENCE

1. IF THE OPERATOR HAS AN EXTERNAL RADIO RECEIVER, DISCONNECT POWER TO IT

2. IF THE OPERATOR HAS A BUILT-IN RADIO RECEIVER, CUT THE COMPONENT THAT FEEDS POWER TO THE RECEIVER OR CUT OFF THE OPERATOR'S ANTENNA AND REMOVE THE RECEIVER'S TUNING SLUG

CONNECT THE RECEIVER TO THE OPERATOR INSTALL THE RECEIVER PROGRAM AND TEST THE RECEIVER LINEAR LIMITED WARRANTY

CONNECT 2-CONDUCTOR WIRE TO THE MDR-U RECEIVER RELAY OUTPUT TERMINALS

ROUTE THE WIRE AND CONNECT IT TO EITHER THE WALL PUSHBUTTON OR DIRECTLY TO THE DOOR OPERATOR (POLARITY NOT IMPORTANT)

DIRECT OPERATOR

CONNECTION

OPERATOR TERMINALS 1 & 2 (OR THE SAME TERMINALS THE WALL PUSHBUTTON USES)

DISCONNECT POWER TO THE GARAGE

DOOR OPERATOR BEFORE PROCEEDING

UL NOTE: ALL LOW VOLTAGE CLASS 2 CABLE USED WITH THE OPERATOR MUST BE UL LISTED TYPE CL2, CL2P, CL2R, OR CL2X OR OTHER CABLE WITH EQUIVALENT OR BETTER ELECTRICAL, MECHANICAL, AND FLAMMABILITY RATINGS

WALL PUSHBUTTON

SECURE THE WIRE WITH INSULATED STAPLES

CONNECTION

FROM

OPERATOR

PUSHBUTTON

ANTENNA

MDR-U

REMOVE THE OUTLET'S COVER PLATE SCREW AND PLUG THE RECEIVER INTO THE 110 VAC OUTLET

SECURE THE RECEIVER TO THE OUTLET WITH THE RETAINING SCREW

NOTE: BE SURE THAT THE OUTLET IS NOT CONTROLLED BY A WALL SWITCH

ADDING TRANSMITTERS

1. PRESS AND RELEASE THE LEARN BUTTON

2. THE LEARN INDICATOR WILL LIGHT IF THERE'S ROOM IN MEMORY (UP TO 10 TRANSMITTERS WILL FIT)

3. ACTIVATE THE TRANSMITTER WHILE THE INDICATOR IS LIT (WITHIN 15 SECONDS)

4. INDICATOR FLASHES

5. REPEAT STEPS FOR ADDITIONAL TRANSMITTERS

TEST RECEIVER

ACTIVATE EACH TRANSMITTER AND VERIFY THAT THE RECEIVER AND DOOR OPERATOR ACTIVATES

ERASING TRANSMITTERS

1. PRESS AND HOLD DOWN THE LEARN BUTTON

2. THE LEARN INDICATOR WILL FLASH COUNTING THE NUMBER OF TRANSMITTERS IN MEMORY

3. CONTINUE HOLDING DOWN THE LEARN BUTTON

4. 5 SECONDS AFTER THE COUNT THE INDICATOR WILL FLASH ONCE SHOWING THE MEMORY ERASURE

5. RELEASE THE BUTTON, THE UNIT ENTERS LEARN MODE FOR 15 SECONDS

This Linear product is warranted against defects in material and workmanship for twelve (12) months. The Warranty Expiration Date is labeled on the product. This warranty extends only to wholesale customers who buy direct from Linear or through Linear’s normal distribution channels. Linear does not warrant this product to consumers. Consumers should inquire from their selling dealer as to the nature of the dealer’s warranty, if any. There are no

obligations or liabilities on the part of Linear Corporation for consequential damages arising out of or in connection with use or performance of this product or other indirect damages with respect to loss of property, revenue, or proﬁ t, or cost of removal, installation, or reinstallation. All implied warranties, including implied

warranties for merchantability and implied warranties for ﬁ tness, are valid only until Warranty Expiration Date as labeled on the product. This Linear Corporation Warranty is in lieu of all other warranties express or implied. 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.

Linear radio controls provide a reliable communications link and ﬁ ll an important need in portable wireless signaling. However, there are some limitations which must be observed.

• For U.S. installations only: The radios are required to comply with FCC Rules and Regulations as Part 15 devices. As such, they have limited transmitter power and therefore limited range.

• A receiver cannot respond to more than one transmitted signal at a time and may be blocked by radio signals that occur on or near their operating frequencies, regardless of code settings.

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

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

• 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.

• This device complies with FCC Part 15 and Industry Canada Rules and Regulations. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT !!!