1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Yale B-723-ENB-PB-40 Deadlatch Nightlatch. Please read these instructions carefully before beginning installation to ensure proper function and security. Retain this manual for future reference.
2. Product Overview
The Yale B-723-ENB-PB-40 is a classic deadlatch nightlatch designed for residential doors. It offers enhanced security features including pick, torque, and tamper resistance. The lock features key operation from the outside and a lever knob handle for operation from the inside. Its robust construction includes an enamelled nickel bronze case with a polished brass cylinder, ensuring durability and reliable performance.
This image displays the two primary components of the Yale B-723-ENB-PB-40 Deadlatch Nightlatch. On the left is the main lock mechanism, featuring the oval-shaped Yale knob for internal operation and the brass deadlatch bolt. On the right is the strike plate, designed to be fitted to the door frame, which receives the deadlatch bolt when the door is closed and locked.
3. Key Features
- Pick Resistant: Designed to resist common lock-picking techniques.
- Torque Resistant: Enhanced strength to withstand forced entry attempts.
- Tamper Resistant: Built to deter tampering and unauthorized access.
- Durable Construction: Enamelled nickel bronze case with polished brass cylinder for longevity.
- Manual Deadlocking: Features manual deadlocking by reverse turn of the key in the outside cylinder.
- Dual Operation: Key operation from outside, lever knob handle operation from inside.
4. Setup & Installation
4.1. Tools Required
- Drill
- Drill bits (appropriate sizes for wood/metal, typically 25mm, 32mm, 38mm)
- Screwdriver (Phillips and/or flathead)
- Tape Measure
- Pencil
- Chisel (for mortising, if required)
- Safety Glasses
4.2. Installation Steps
Note: Professional installation is recommended if you are unfamiliar with door hardware installation. Ensure the door and frame are structurally sound before installation.
- Prepare the Door: Determine the desired height for the nightlatch. Mark the center line for the lock body and cylinder on the door edge and face. Ensure the 40mm backset is correctly measured from the door edge to the center of the cylinder hole.
- Drill Cylinder Hole: Drill a hole through the door face for the cylinder, typically 32mm or 38mm, depending on the cylinder diameter.
- Drill Lock Body Holes: Position the lock body template (if provided, or measure carefully) and drill pilot holes for the mounting screws on the door face.
- Install Cylinder: Insert the cylinder through the drilled hole from the outside of the door. Secure it with the retaining screws from the inside, ensuring it is flush and tight.
- Mount Lock Body: Align the nightlatch body with the cylinder mechanism and the drilled pilot holes. Secure the lock body to the door face using the provided screws. Ensure the deadlatch bolt operates smoothly.
- Prepare the Door Frame: Close the door and mark the position where the deadlatch bolt meets the door frame.
- Install Strike Plate: Position the strike plate on the door frame according to your mark. Trace its outline and chisel out a recess if necessary for a flush fit. Drill pilot holes and secure the strike plate with screws.
- Test Operation: With the door open, test the internal knob and external key operation. Close the door and test both operations again, ensuring the deadlatch engages correctly with the strike plate and the deadlocking function works.
5. Operating Instructions
5.1. Locking the Door
- From the Outside: Close the door. The spring latch will automatically engage. To deadbolt the lock, insert the key into the outside cylinder and turn it in the reverse direction (usually anti-clockwise) until the deadlatch is fully extended and locked. Remove the key.
- From the Inside: Close the door. The spring latch will automatically engage. To deadbolt the lock, turn the internal lever knob in the appropriate direction (refer to specific lock markings if present) until the deadlatch is fully extended and locked.
5.2. Unlocking the Door
- From the Outside: Insert the key into the outside cylinder and turn it to retract the deadlatch. Continue turning to retract the spring latch and open the door.
- From the Inside: Turn the internal lever knob to retract both the deadlatch and the spring latch, then open the door.
6. Maintenance
To ensure the longevity and smooth operation of your Yale Deadlatch Nightlatch, follow these maintenance guidelines:
- Cleaning: Wipe the lock body and cylinder with a soft, damp cloth. Avoid abrasive cleaners or solvents, as these can damage the finish.
- Lubrication: Periodically (e.g., once a year), apply a small amount of graphite-based lubricant or a specialized lock lubricant into the keyway and around the moving parts of the latch mechanism. Do not use oil-based lubricants, as they can attract dust and grime.
- Check Screws: Regularly check all mounting screws for tightness. Tighten any loose screws to prevent wobbling or misalignment.
- Inspect for Wear: Examine the deadlatch bolt and strike plate for signs of excessive wear or damage. If significant wear is observed, consider replacement to maintain security.
7. Troubleshooting
If you encounter issues with your nightlatch, refer to the following table for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Key turns but lock does not engage/disengage. | Internal mechanism misalignment or damage. | Check for obstructions. If problem persists, professional inspection or replacement may be needed. |
| Deadlatch bolt does not fully extend or retract. | Lack of lubrication, dirt in mechanism, or strike plate misalignment. | Lubricate the mechanism. Clean any debris. Adjust strike plate if necessary. |
| Internal knob is stiff or difficult to turn. | Internal mechanism friction or dirt. | Apply lock lubricant to the knob mechanism. Ensure mounting screws are not overtightened. |
| Door rattles when closed. | Strike plate not properly aligned or fitted. | Adjust the strike plate position to ensure a snug fit with the deadlatch bolt. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | B-723-ENB-PB-40 (also 630723101322) |
| Brand | Yale |
| Lock Type | Deadlatch Nightlatch, Key Lock |
| Special Feature | Key Unlock, Manual Deadlocking |
| Backset | 40 mm |
| Material | Brass (Cylinder), Enamelled Nickel Bronze (Case) |
| Finish Type | Polished |
| Dimensions (L x W x H) | 4.33 x 2.95 x 2.95 inches (approx.) |
| Item Weight | 1.1 pounds / 500 Grams |
| Recommended Use | Residential doors in homes |
9. Warranty & Support
9.1. Warranty Information
The Yale B-723-ENB-PB-40 Deadlatch Nightlatch comes with a 10-year guarantee against manufacturing defects. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by improper installation, misuse, abuse, or unauthorized modifications.
9.2. Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Yale customer support. Refer to the official Yale website or product packaging for the most current contact information, including phone numbers and email addresses.
