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MORTISE UNLATCH
INSTALLATION AND OPERATING INSTRUCTIONS
MODELS MUNL-12 and MUNL-24
Securitron Magnalock Corp.
Tel 800.624.5625
© Copyright, 2011, all rights reserved
®
ELECTRONIC STRIKE
techsupport@securitron.com
ASSA ABLOY, the global leader
In door opening solutions
www.securitron.com
PN# 500-18800
Rev. E, 11/11
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Summary of Contents for Assa Abloy SECURITRON MORTISE UNLATCH MUNL-12
- Page 1 ASSA ABLOY, the global leader In door opening solutions ® MORTISE UNLATCH ELECTRONIC STRIKE INSTALLATION AND OPERATING INSTRUCTIONS MODELS MUNL-12 and MUNL-24 Securitron Magnalock Corp. www.securitron.com Tel 800.624.5625 techsupport@securitron.com © Copyright, 2011, all rights reserved PN# 500-18800 Rev. E, 11/11...
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Page 2: Recommended Tools
Securitron Magnalock Corp. www.securitron.com ASSA ABLOY, the global leader Tel 800.624.5625 techsupport@securitron.com in door opening solutions SECURITRON MODEL MUNL-12, MUNL-24 MORTISE UNLATCH INSTALLATION AND OPERATING INSTRUCTIONS 1. DESCRIPTION Securitron’s Mortise UnLatch is a revolutionary new type of electric strike which eliminates the necessity to perform a routing operation on the door frame for installation. - Page 3 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 hollow door frame and screw the Mortise UnLatch into place.
- Page 4 2.4.1 EXCEPTIONS: When working with Corbin Russwin ML2000 and BEST Series 2 Mortise Locks the dead latch needs to be removed. With both of these locks the dead latch is not retracted by the lever set when you are exiting the secure area this means that depending on the door gap the dead latch may hang up on the stainless steel case of the MUNL.
- Page 5 FIG. 3: ADJUSTING SPRINGLATCH POSITION Perform these adjustments with the unit on a flat surface and be careful not to lose SMALL COVER (A) the small screws Remove Small Cover (Small Phillips Driver) SMALL COVER SCREWS (B) Remove "U" Shield (5/64"...
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Page 6: Operation
silencers, add one or two door stop spacers as is shown in Figure 4 to cause the door to close earlier. If the amount of slack or rattling is less than 1/16-1/8”, you have a “tight” door and the ability of the door to close and latch reliably is in question. To adjust for this, first check to see if the stop has “silencers”... - Page 7 FIG 5: MORTISE UNLATCH SIDE VIEW IN REST (SECURE) POSITION DEADLATCH FINGERS DEADLATCH PIN SPRINGLATCH SPRINGLATCH PLUNGER IN THE REST (SECURE) POSITION, THE SPRINGLATCH IS ALLOWED TO COME OUT BY THE SPRINGLATCH PLUNGER THEREBY SECURING THE DOOR. THE DEADLATCH FINGERS, HOWEVER, PUSH IN THE DEADLATCH PIN WHICH "FREEZES"...
- Page 8 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 Mortise 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 build up as motors draw heavy current when they’re not permitted to move.
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Page 9: Wire Gauge Sizing
FIG. 8: ZENER DIODE PLACEMENT ( MUNL-24 , TRANSFORMER, BRIDGE RECTIFIER) TP-24-2 PLUG IN TRANSFORMER BR-7 PB2E MUNL-24 1N5333B Zener diodes TRIG Note diode orientation: CROSS BAR DENOTES CATHODE BANDED SIDE DENOTES CATHODE Note: The addition of the zener diodes is only required when using the MUNL-24 with 24VAC transformer and bridge rectifier. - Page 10 Distance (one way) 50 ft. (15 M) 100 ft. (30 M) 200 ft. (60 M) Wire Gauge for MUNL-12 Wire Gauge for MUNL-24 4.3 LATCH STATUS SENSING The Mortise UnLatch includes a latch status sensing feature. When the GREEN door is closed and the door latch has engaged the Mortise UnLatch BLUE (specifically the springlatch plunger has been pushed in by the door latch), the Mortise UnLatch will report this secure condition by...
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Page 11: Appendix A: Troubleshooting
APPENDIX A: TROUBLESHOOTING PROBLEM-- Unit will not operate when 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 confirmed, note that the Mortise UnLatch will never operate unless the springlatch plunger is pushed in by the springlatch (see Section 3.3). - Page 12 TEMPLATE FOR CHISELING OUT A WOOD FRAME 1 1/4" PN# 500-18800 Page 11 Rev. E, 11/11...
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