Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Dexter 6618 Tubular Knob Lock. Designed for interior use, this stainless steel knob lock offers reliable security and a modern aesthetic. Please read these instructions carefully before beginning installation or use to ensure proper function and longevity of your product.
Safety Information
- Always wear appropriate safety gear, such as gloves and eye protection, during installation.
- Keep small parts away from children to prevent choking hazards.
- Ensure all components are securely fastened before use.
- Do not modify the lock mechanism, as this may compromise security and void the warranty.
Package Contents
Verify that all components are present before beginning installation:
- Exterior Knob with Keyway
- Interior Knob with Turn-button
- Latch Mechanism
- Strike Plate
- Mounting Screws
- Installation Instructions (This manual)
Setup and Installation
Tools Required:
- Phillips Head Screwdriver
- Measuring Tape
- Pencil
- Drill (if new door preparation is needed)
- Wood Chisel (if new door preparation is needed)
Installation Steps:
- Prepare the Door: Ensure your door has the standard bore holes for a knob lock (typically 2-1/8 inch diameter for the knob and 1 inch diameter for the latch). The backset (distance from door edge to center of knob hole) should be 2-3/8 inches or 2-3/4 inches.
- Install the Latch Mechanism: Insert the latch mechanism into the edge bore hole of the door. Ensure the bevel of the latch bolt faces the door frame. Secure it with the provided screws.
- Install the Exterior Knob: Insert the exterior knob assembly through the larger bore hole from the outside of the door. Ensure the spindle aligns with the latch mechanism.
- Install the Interior Knob: Place the interior knob assembly onto the spindle from the inside of the door. Align the mounting posts with the holes on the exterior knob assembly.
- Secure the Knobs: Fasten the interior and exterior knob assemblies together using the long mounting screws. Tighten them evenly until the knob is secure but can still turn freely. Do not overtighten.
- Install the Strike Plate: Mark the position for the strike plate on the door frame, aligning it with the latch bolt. Chisel out a shallow recess if necessary and secure the strike plate with screws.
- Test Operation: Close the door and test the knob's operation from both sides. Ensure the latch retracts smoothly and the lock engages correctly.
Image 1: Overview of the Dexter 6618 Tubular Knob Lock components, including the exterior knob with keyway, interior knob, and latch mechanism. This image illustrates the main parts before assembly.
Operating Instructions
- To Open from Exterior: Insert the key into the keyway and turn to retract the latch bolt. Turn the knob to open the door.
- To Open from Interior: Turn the knob to retract the latch bolt and open the door.
- To Lock from Interior: Press or turn the button on the interior knob to engage the lock. The exterior knob will then be fixed, preventing entry without a key.
- To Unlock from Interior: Turn the interior knob or press the button again (depending on mechanism) to disengage the lock.
Maintenance
- Cleaning: Clean the knob and trim with a soft, damp cloth. Avoid abrasive cleaners or solvents, as these can damage the finish.
- Lubrication: Periodically apply a small amount of graphite lubricant to the keyway and latch mechanism to ensure smooth operation. Do not use oil-based lubricants, as they can attract dust and debris.
- Inspection: Regularly check all screws and components for tightness. Tighten any loose screws to prevent rattling or malfunction.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Knob is loose or wobbly. | Mounting screws are loose. | Tighten the mounting screws evenly. |
| Latch bolt does not retract smoothly. | Mechanism is dry or obstructed. | Apply graphite lubricant to the latch mechanism. Check for debris. |
| Door does not latch properly. | Strike plate misalignment. | Adjust the position of the strike plate on the door frame. |
| Key is difficult to insert or turn. | Keyway is dirty or dry. | Apply graphite lubricant to the keyway. Ensure the key is not bent or damaged. |
Specifications
- Model Number: 6618
- Brand: DEXTER
- Function: Slot - Button
- Material: Zamac and Steel (Stainless Steel finish)
- Cylinder: Brass
- Dimensions (L x W x H): 18 x 6 x 7 cm (7.09 x 2.36 x 2.76 inches)
- Recommended Use: Interior
- Color: Stainless Steel
- Components Included: Screws
- UPC: 633349025443
Warranty and Support
DEXTER products are manufactured to high-quality standards. For specific warranty information or technical support, please refer to the official DEXTER website or contact your retailer. Keep your purchase receipt as proof of purchase.