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Assa Abloy Door Lock - page 1
Copyright, 2001, all rights reserved • Securitron Magnalock Corp., 550 Vista Blvd., Sparks NV 89434, USA Tel: (775) 355-5625 • (800) MAGLOCK • Fax: (775) 355-5636 • Website: www.securitron.com An ASSA ABLOY Group company PN# 500-18800 Page 1 Rev. A.1, 8/01 SECURITRON MODEL MUNL-12, MUNL-24 MORTISE UNLATCH INSTALLATION AND OPERATING INST ...
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Assa Abloy Door Lock - page 2
Rev. A.1, 8/01 Page- 2 2.2 HOLLOW METAL (STEEL) FRAME MOUNTING Remove the existing ANSI 4 7/8” strike plate (it will be discarded) and experimentally try to fit the Mortise UnLatch in the resulting cavity. In some cases the cavity will be large enough to accommodate the Mortise UnLatch and you will have nothing to do but pull the wires up the hol ...
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Assa Abloy Door Lock - page 3
Rev. A.1, 8/01 Page- 3 lines and knowledge of the gap between the sp ringlatch and deadlatch pin are used to determine the vertical position of the springlatch plunger. When this gap is greater than ¼”, best reliability is obtained when the springlatch pl unger position is centered on the springlatch. When the gap is smaller than ¼”, however, ...
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Assa Abloy Door Lock - page 4
Rev. A.1, 8/01 Page- 4 FIG. 3: ADJUSTING SPRINGLATCH POSITION 2.5 FINAL ADJUSTMENT WITH SPACERS For reliable operation, the door needs to close so that the latch eas ily enters and is retained by the Mortise UnLatch. The door should not hav e to be pushed to engage as can be the case with a poorly fitting or poorly closing door. To check this point ...
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Assa Abloy Door Lock - page 5
Rev. A.1, 8/01 Page- 5 If the amount of slack or ratt ling is less than 1/16-1/8”, you have a “tight” door and the ability of the door to close and latch reli ably is in question. To adjust for this, first check to see if the stop has “ silencers ” on it. These are cylindrical rubber bumpers which quiet the noise of a closing door but als ...
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Assa Abloy Door Lock - page 6
Rev. A.1, 8/01 Page- 6 FIG 5: MORTISE UNLATCH SIDE VI EW IN REST (SECURE) POSITION DEADLATCH PIN SPRINGLATCH DEADLATCH FINGE RS SPRINGLATCH PLUNG ER IN THE REST (SECURE) P OSITION, THE SPRINGLA TCH IS A LLOWED TO COME OUT BY T HE SPRINGLATCH PLUNGER THEREBY SE CURING THE DOOR. THE DEADLATCH FINGERS, HOWEVER, PUSH IN THE DEADLATCH PIN WHICH "FR ...
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Assa Abloy Door Lock - page 7
Rev. A.1, 8/01 Page- 7 Note that if the door is heavily pre-loaded (by someone trying to pull it open before the Mortise UnLatch has released it for example), the Mo rtise UnLatch may not possess enough power to release the door. This is termed a stall condition for the motor. When a motor is stalled for a period of time, it can be damaged by heat ...
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Assa Abloy Door Lock - page 8
Rev. A.1, 8/01 Page- 8 UnLatches, the extra current capability will always be there as each unit will operate at different times so each can draw extra current from the power supply when needed. If you are using a sma ller capacity power source, you may be satisfied with the operation of the Mortise UnLatch since the reduction in to rque is only no ...
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Assa Abloy Door Lock - page 9
Rev. A.1, 8/01 Page- 9 MAGNACARE LIMITED LIFETIME WARRANTY SECURITRON MAGNALOCK CORPORATION wa rrants that it will replace at cu stomer’s request, at any time for any reason, products manufac tured and branded by SECURITRON. SECURITRON will use its best efforts to ship a replacem ent product by next day air fr eight at no cost to the customer wit ...
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Assa Abloy Door Lock - page 10
Rev. A.1, 8/01 Page- i APPENDIX A: TROUBLESHOOTING PROBLEM -- Unit w ill not operate w hen trigger wire is connected to +V. On a new installation, make sure that DC power (12 or 24 volts depending on the model) is connected to the red and black wires with correct polarity. When this is c onfirmed, note that the Mort ise UnLatch will never operate u ...
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Assa Abloy Door Lock - page 11
Rev. A.1, 8/01 Page- ii TEMPLATE FOR CHISELING OUT A WOOD FRAME DOTTED LINE SHOW S AREA TO CHISEL OUT 1 7/8" DEEP FO R INSTALLA TION IN WOOD FRAME 4 7/8" 1 1/4" 4 1/8" CENTER LINE ...
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