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Occupancy Indicators

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New Corbin and Schlage Occupancy Indicators

In 2018 we have seen a sharp increase in choices available for occupancy indicators for mortise locks. Goodness knows the world can always use more occupancy indicators. One might say that us hardware geniuses now have a dizzying array of indicators available to meet your occupancy indication application needs. Following are some examples of the new choices.

The Schlage lock company advanced with new “180 degree visibility” indicator offerings for their L Series mortise locks, including the new N escutcheon with indicator. Four signage options are available, and indicators are available for use on both the insides and outsides of doors. For example, on a classroom intruder application, LOCKED/UNLOCKED indicators can be installed on both sides of the door, or on a nursing mother’s room, a LOCKED/UNLOCKED indicator inside to reassure the mom, and a DO NOT DISTURB or OCCUPIED indicator outside to stop folks from barging in.

“180 degree visibility” is accomplished by additional indicator windows on the edge of the indicator unit that are visible from the side.
There are many models in this offering of indicators: one for each combination of interior or exterior multiplied by four possible signage choices and for use with either cylinder, emergency screwdriver slot or turn piece.

These indicators are usable with many, but not all L Series functions. Schlage still offers their original model 09-611 indicator that is included with some mortise lock functions. Consult your Schlage commercial price book or favorite door hardware genius for more information.

Sargent and Corbin have also increased their indicator offerings for their mortise locks, expanding them to more functions with more signage options, and now including escutcheon trims as well.

One option offered by Assa Abloy and not by Allegion at this time is escutcheons engraved with the word, “LOCK,” and an arrow indicating the direction one needs to turn the key to lock the door. This option would perhaps be most notably used for classroom intruder functions, wherein the outside trim is locked from inside the classroom with a key during a security emergency. The inside trim remains unlocked for safe egress.

Like the new Allegion indicators, the new Assa Abloy indicator offerings work with select functions and have variable part numbers that reflect the different signage, placement and function of the indicator.

Usually occupancy indicators can be added to existing locks, as long as the indicator is compatible with the function of the lock. Replacing a plain escutcheon with an indicator escutcheon is a bit pricier and installation is more complex, but it can be done, once again, if the chosen indicator trim is compatible with the existing hardware.

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Field Reversing the Adams Rite 4510 Latch

July 18, 2015 Lock Repair / locksmith

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Adams Rite 4510 Latch

Although Adams Rite tech support might not want to talk about it*, depending on who you talk to there, the 4510 series latch lock, like its predecessor the 4710, is, in fact, field reversible. Following are the steps to do so.

First, try to choose a clean work surface in an enclosed space, just in case the springs go flying.

1. Remove the retaining plate screws using a #1 Philips screwdriver. Place the screws on the work surface where you can find them later.

2. Carefully remove the plate from the back of the lock body that holds the bolt, auxiliary dead latch and latch springs in place. The latch springs exert tension against this plate, so remove it with care.

3. Using the tip of the screwdriver, move the locking lever pin so it lines up with the slot in the lock body and gently push the front of the bolt with your thumb. The bolt, auxiliary dead latch and deadlock arm assembly will slide out of the back of the lock body together.

4. Remove the pin that attaches the deadlock arm to the bolt assembly.

See the exploded view of the old 4710 latch below for more detail. The newer 4510 is similar if not identical to the 4710.

Caution: There is a spring inside the bolt assembly that actuates the deadlock arm.

5. Remove the deadlock arm and spring.

6. Turn the latch over and install the deadlock arm and spring on the other side. You will need to hold the deadlock arm and spring in position. When the spring and all are in position, install the pin.

7. Slide the bolt assembly into the lock body.

9. Place the smaller spring into the auxiliary deadlatch and the larger spring in the bolt.

8. Slide the auxiliary deadlatch into the lock body.

9. Install the retaining plate and screws.

Detail from discontinued Adams Rite 4710 Latch parts breakdown, from Adams Rite parts book

* I recently related this procedure to a locksmith who said she had called Adams Rite tech support who told her the unit is not field reversible. This is understandable because the installation instructions do not discuss reversing the handing.

The Obsolete Mortise Lock

January 26, 2015 builders hardware / door hardware / Door Repair / Keys and Keying / Lock Repair / locksmith

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Nothing lasts forever. Like manufacturers of other mechanical devices, lock companies periodically update their products to be consistent with current technology. They do this to make better, safer, more reliable products, and also to remain competitive in the market place.

Sometimes these new, updated products are backwards-compatible with older models of the same brand, sometimes not. In the case of mortise locks I can say with some confidence, mostly not. One cannot replace a Schlage K series mortise lock body with an L series and expect the trim to work. The same is true of the newer Sargent 8200 vs. the older 8100 and the Yale 8800 series vs. the previous 8700 series. As these older locks age and must be replaced these differences can become a problem, since the existing trims and cylinders on site may not be usable with the new lock bodies. And there are still plenty of these older lock bodies out there. Case in point, although the Yale 8700 series was discontinued in 2006, one facility I know is filled to the brim with these mortise locks.

Although I foresaw that they would not be able to use the existing trims with their new locks I failed to anticipate that the existing cylinders would also be incompatible. But they were and here is why. On the left the cam that works with the Yale 8700 is in the process of being removed from a Medeco small format interchangeable core (SFIC) housing. In the first picture below, the correct cam has been installed.

In the second picture you can see that the new cam is not only thinner than the old cam, it’s also slightly longer. There is no way that old cam is going to work. Luckily, on a Medeco SFIC housing the cams are interchangeable, unlike most others on which the cams are permanently attached.

Please visit my friends’ site:

http://www.americanlocksets.com/mortise-locks-c-38_159.html

Now I’m waiting to hear about the other SFIC housings on the job that have their cams staked on. But one cluster at time, eh?

Schlage CO and AD Series Mortise Lock Parts

May 24, 2014 builders hardware / door hardware / Door Repair / electric locking / hardware sales wars / Lock Repair / security hardware

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Schlage AD Series

This just goes to show that there is no substitute for field experience. In the quest to provide the best service to his customer, this locksmith went past my advice and the advice of factory tech support to find the best solution.

The locksmith inquired about a replacement latch for a Schlage CO200MS mortise lock. I called Schlage Tech Support and they said that there were no replacement parts available for that CO-200 Series mortise lock chassis; that the entire mortise chassis had to be replaced for a hefty sum and I relayed this info to the locksmith. The locksmith, however, knew that Schlage advertised that the CO series locksets incorporated the Schlage standard L-series lock chassis “for durability and dependability.” Based on this, the locsksmith took a chance, went to the parts list for the L-Series mortise lock with the same function and ordered the replacement latch. He reports that is identical and works fine.

Good to know! One can assume that many parts from the L Series mortise lock with the same function will work in all AD and CO series mortise lock bodies. Like I said, you learn something new every day.

Thanks for stopping by.

Occupancy Indicators

Field Reversing the Adams Rite 4510 Latch

The Obsolete Mortise Lock

Schlage CO and AD Series Mortise Lock Parts

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