Operation | Assa Door Lock manual

Rev. A.1, 8/01

Page- 5

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” on it. These are cylindrical rubber bumpers which quiet the noise of a closing door but also have the effect of making the door close earlier. Remove the silencers (they pull out) and this will add slack to the closed position of the door. Be sure to check the entire length of the door for the silencers. If the door has no silencers and is still tight in latching, a locksmith should be engaged to readjust the door so that it closes properly or the installation will not be reliable.

Figure 4 illustrates the points made in this Section.

FIG. 4: FINAL ADJUSTMENT OF DOOR CLOSING TOLERANCE

VIEW OF MORTISE UNLATCH LOOKING STRAIGHT INTO DOOR FRAME

DEADLATCH

FINGERS

	SPRINGLATCH PLUNGER	TWO SPACERS
	SPRINGLATCH PLUNGER	SILENCER
		SILENCER

3. OPERATION

While you can make a successful installation without knowing how the Mortise UnLatch functions, it’s best if you understand its operation in the event you run into difficulties or questions. The operation of the Mortise UnLatch is, of course, intimately connected with the way mortise locks work on a door so we’ll cover this first.

Mortise locks are the highest quality and heaviest duty locks for sale in North America. They not only provide long operating life but deliver the highest level of physical security obtainable in a mechanical latch. To assure this security, all mortise locks include deadlatching function. This means that when the door is closed and latched, a deadlatch pin, present on the lock face, is pressed in. This mechanically pins the springlatch so that it cannot be moved by an object (such as a credit card) which is pushed in between the door and frame.

In order to release the mortise latch, the Mortise UnLatch has two moving elements under the control of a motor. We call these the springlatch plunger and deadlatch fingers. When the door is in the closed and secure position, the springlatch pushes in the springlatch plunger and the deadlatch pin rests on the deadlatch fingers which push in the deadlatch pin. This maintains the latch in the secure position and makes full use of the deadlatching function.

When the Mortise UnLatch operates (the trigger wire connects to the +V wire), the deadlatch fingers retract into the body of the Mortise UnLatch which allows the deadlatch pin to move out. Then the springlatch plunger and deadlatch fingers simultaneously push the latch and deadlatch pin back into the lock body and the door may be opened from the outside. This operation takes about 1/3 of a second. When the trigger wire is removed from the +V wire, the Mortise UnLatch will return to its initial condition: the springlatch plunger will retract into the Mortise UnLatch body which allows the latch to resecure the door and the deadlatch fingers will push out depressing the deadlatch pin and freezing the latch for best security.

Door Lock specifications

Assa Door Lock is a leading brand renowned for its innovative and reliable locking systems, catering to both residential and commercial needs. The key features of Assa door locks include their robust construction, advanced security measures, and user-friendly design, making them a popular choice for those concerned with safety and accessibility.

One of the standout characteristics of Assa locks is their high-security ratings. Many of their products are crafted with a patented locking mechanism that offers superior pick resistance and drill protection. This makes them particularly effective against unauthorized access, ensuring that homes and businesses remain safe from intruders. Assa locks often come with hardened steel components that significantly enhance overall durability and resistance to tampering.

Technologically, Assa has incorporated cutting-edge features into their locks. Many models are equipped with the ASSA D6 cylinder, which employs a unique pin and disc mechanism that increases complexity for would-be burglars. The D6 cylinder is designed with a patented key design that prevents unauthorized duplication, thereby bolstering security. In addition, various Assa locks offer the convenience of keyless entry systems, which integrate smart technology for enhanced accessibility. These systems can often be controlled via smartphones or access cards, providing seamless entry options for users.

Another notable feature of Assa locks is their versatility. They come in various designs, allowing consumers to select a model that complements their property’s aesthetic. Whether it’s for traditional wooden doors or modern security doors, Assa offers solutions that integrate well into any architectural style. Furthermore, many of their products can be customized, enabling users to choose different finishes and configurations to suit their specific needs.

Assa Door Locks also prioritize ease of installation and maintenance. Most models are designed to be easily installed by DIY enthusiasts, minimizing the need for professional help. Their locks are generally designed to withstand harsh weather conditions, making them a viable option in diverse environments.

In summary, Assa Door Locks represent a blend of security, technology, and design. Their advanced mechanisms, customizable options, and user-friendly features make them a top choice for anyone looking to enhance the security of their property. With a focus on quality and innovation, Assa continues to be a leader in the locking system industry.