T A B L E O F C O N T E N T S

INTRODUCTION

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Agency Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

INSTALLATION

Important Installation Warnings . . . . . . . . . . . . . . . . . . . . . . . . . .4 Mount the Release Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

WIRING

Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Connections of Initiating Devices and Accessories . . . . . . . . . .7-8

Optional Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

TESTING

Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

TROUBLESHOOTING

Operational Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

MAINTENANCE

Maintenance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Enclosure Mounted LEDs Status Indicators . . . . . . . . . . . . . . . .12

ACCESSORIES AND REPLACEMENT PARTS . . . . . . . .13 APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 OPERATOR NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

WARNING

Mechanical

WARNING

Electrical

CAUTION

When you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibility of serious injury or death if you do not comply with the warnings that accompany them. The hazard may come from something mechanical or from electric shock. Read the warnings carefully.

When you see this Signal Word on the following pages, it will alert you to the possibility of damage to your door and/or the door operator if you do not comply with the cautionary statements that accompany it. Read them carefully.

IMPORTANT NOTES:

•BEFORE attempting to install, operate or maintain the release device, you must read and fully understand this manual and follow all safety instructions.

•DO NOT attempt repair or service of your release device unless you are an Authorized Service Technician.

I N T R O D U C T I O N

GENERAL DESCRIPTION

The LiftMaster® LM21XP Release Device is UL/ULC listed normally energized fail-safe device designed for use on rolling doors, single-slide and center-parting level and inclined track doors. All models are normally energized fail-safe releasing devices incorporating state-of-the-art electronic control circuitry. The release devices respond to emergency conditions generated from an automatic initiating device and are used in conjunction with a temperature fuse link system.

This device is designated to be used with manual doors, but can be used on motorized doors incorporating a fusible link assembly and drop-out mechanism.

The release device must be powered from 24Vdc received from an approved UL 1481 regulated power supply with battery backup. The devices can be activated via a smoke detector or an alarm relay from the panel’s Form C dry contact relay. The release device features include a 10-, 20-, 30- or 60-second delay on alarm, closed door detection capabilities, Form C relay outputs for the transmission of alarm and trouble signals transmitted to the fire alarm control panel, an audible trouble sounder, and diagnostic feedback LEDs.

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