5
6. There may be no pulse. To check for pulses, prop the door open and connect a voltmeter across
the red and black leads coming from the exit device (red lead is positive). Next, connect a jumper
wire across terminals 1 and 2 of TB3 to keep DEVICE ONE in a continuous pulled back state. If
the voltmeter measures between 30 and 40 VDC at the moment the jumper wire was installed,
but the latch did not budge, then no initial pulse was generated. Check for a series of timed
pulses that will occur approximately every six seconds. (Make sure that the control rod is not
positioned over the reflective sensor on the pulse module when making this next check.) Wait for
about 20 seconds to see if the latch pulls back. If it still does not respond, then it indicates the
pulse module is inoperative and the entire solenoid/module assembly must be replaced.
Symptom:
When 120 volts is applied to TB1, the exit devices immediately pull back, even though the control
switch had not been activated.
Possible Causes:
1. Field wiring between the power supply and control switch are shorted together against the
conduit or switch mounting box.
2. A maintain switch is being used and is in the closed position.
3. A defective control switch.
Symptom:
A noticeable buzzing sound at equal intervals is coming from inside the exit device while in its
pulled back state.
Possible Causes:
1. The latch is binding against its corresponding strike and preventing it from pulling back fully, due
to misalignment between the latch and strike opening.
2. A defective pulse module.
NOTE 1:
THIS UNIT IS LISTED AS AN EXIT DEVICE CONTROL UNIT TO UL294
REQUIREMENTS.
NOTE 2:
THE POWER OUTPUT OF THE CONTROLLER IS OF A FAIL SECURE DESIGN. THE
EXIT DEVICE REMAINS LATCHED DURING A COMPLETE POWER FAILURE, BUT
ALWAYS ALLOWS FREE MECHANICAL EGRESS. LISTED PANIC HARDWARE MAY BE
REQUIRED TO ALLOW EMERGENCY EXIT. CONSULT LOCAL AUTHORITY HAVING
JURISDICTION.
Product Support Tel 800-810-WIRE (9473) • www.yalelocks.com
Yale® is a registered trademark of Yale Security Inc., an ASSA ABLOY Group company. Other products' brand names may be trademarks or registered trademarks of their
respective owners and are mentioned for reference purposes only. These materials are protected under U.S. copyright laws. All contents current at time of publication.
Yale Security Inc. reserves the right to change availability of any item in this catalog, its design, construction, and/or its materials.
Copyright © 1998, 2013, Yale Security Inc., an ASSA ABLOY Group company.
All rights reserved. Reproduction in whole or in part without the express written permission of Yale Security Inc. is prohibited.
Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening, and Yale Locks & Hardware makes no representations or warranties
concerning what such impact may be in any specific situation. When retrofitting any portion of an existing fire rated opening, or specifying and installing a new fire-rated opening,
please consult with a code specialist or local code official (Authority Having Jurisdiction) to ensure compliance with all applicable codes and ratings.
Yale Locks & Hardware is a division of Yale Security Inc., an ASSA ABLOY Group company.
An ASSA ABLOY Group brand
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