1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the LCN 4041 DEL Rw/PA Delayed Action Regular Door Closer. This heavy-duty, cast iron, surface-mount door closer features a delayed action cylinder and a Tri-Pack arm for versatile mounting options (regular pull side, top jamb, or parallel arm). It includes a plastic cover and is ADA adjustable for spring sizes 1-6, meeting Grade 1 standards.
2. Safety Information
Read all instructions carefully before installation and use. Failure to follow these instructions may result in injury or property damage.
- Always wear appropriate personal protective equipment, such as safety glasses, during installation.
- Ensure the door is properly supported and secured before beginning installation.
- Do not modify the door closer or its components. Use only genuine LCN replacement parts.
- Keep hands and fingers clear of moving parts during operation and adjustment.
- Consult a qualified professional if you are unsure about any part of the installation or adjustment process.
3. Package Contents
Verify that all components are present before beginning installation:
- LCN 4041 DEL Door Closer Body (Cast Iron)
- 62PA Tri-Pack Arm Assembly
- Plastic Cover
- TBSRT Screw Pack (for mounting)
- Installation Template (not explicitly mentioned but implied for installation)

Figure 1: LCN 4041 DEL Door Closer components. This image displays the main closer body, the 62PA arm assembly, and a separate mounting bracket, all in an aluminum finish. These are the primary parts included for installation.
4. Setup and Installation
The LCN 4041 DEL closer offers Tri-Pack mounting, allowing for regular pull side, top jamb, or parallel arm installation. Refer to the included installation template for precise hole drilling and mounting positions specific to your chosen application.
4.1. Preparation
- Ensure the door and frame are structurally sound and capable of supporting the closer's weight and operational forces.
- Clean the mounting surfaces thoroughly.
- Select the appropriate mounting configuration (Regular Pull Side, Top Jamb, or Parallel Arm) based on your door and frame type.
4.2. Mounting the Closer Body
- Position the installation template on the door or frame according to your chosen mounting configuration.
- Mark the drilling locations for the closer body and arm bracket.
- Drill pilot holes as indicated by the template.
- Secure the closer body to the door or frame using the provided TBSRT screw pack. Ensure it is level and firmly attached.
4.3. Installing the Arm Assembly
- Attach the main arm to the closer's spindle.
- Connect the secondary arm (forearm) to the main arm and the mounting bracket.
- Adjust the arm length and angle as per the installation template to achieve the desired door opening and closing action.
4.4. Attaching the Cover
Once the closer and arm are securely installed and adjusted, snap the plastic cover over the closer body for aesthetic finish and protection.
5. Operation and Adjustment
The LCN 4041 DEL closer features adjustable closing speed, latching speed, backcheck, and delayed action. These adjustments are typically made via valves located on the closer body.
5.1. Spring Power Adjustment (ADA Compliant)
The closer is ADA adjustable for spring sizes 1-6. To adjust the spring power, use the spring adjustment nut located at the end of the closer body. Turning the nut clockwise increases spring power (for heavier doors or more resistance), while turning it counter-clockwise decreases spring power (for lighter doors or less resistance). Ensure the door meets ADA opening force requirements after adjustment.
5.2. Closing Speed Adjustment
Adjust the main closing speed valve to control the door's movement from its fully open position until approximately 10-15 degrees from closed.
5.3. Latching Speed Adjustment
Adjust the latching speed valve to control the final 10-15 degrees of the door's closing cycle, ensuring it latches securely without slamming.
5.4. Delayed Action Adjustment
The delayed action feature holds the door open for an extended period before the closing cycle begins, allowing for easier passage. Adjust the delayed action valve to set the desired delay time. Turning the valve clockwise typically increases the delay, while counter-clockwise decreases it.
5.5. Backcheck Adjustment
The backcheck feature provides hydraulic resistance when the door is opened forcefully beyond a certain point (typically 70-80 degrees), preventing damage to the door or frame. Adjust the backcheck valve to control the intensity of this resistance.
Note: Make small adjustments to each valve and test the door's operation before making further changes. Over-tightening valves can cause damage.
6. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your LCN door closer.
- Annual Inspection: Periodically inspect the closer body, arm assembly, and mounting screws for any signs of wear, damage, or looseness.
- Cleaning: Keep the closer body and arm free from dirt and debris. Wipe with a soft, damp cloth. Avoid abrasive cleaners.
- Lubrication: The internal components are factory-lubricated and generally do not require additional lubrication. Do not attempt to lubricate internal parts.
- Adjustments: Re-adjust closing and latching speeds as needed to compensate for changes in air pressure, temperature, or door usage.
- Fasteners: Ensure all mounting screws remain tight. Re-tighten if necessary, but do not overtighten.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Door slams shut | Latching speed too fast. | Adjust the latching speed valve counter-clockwise in small increments. |
| Door closes too slowly | Closing speed too slow. | Adjust the main closing speed valve clockwise in small increments. |
| Door does not close completely | Insufficient spring power or latching speed. | Increase spring power (clockwise) or increase latching speed (clockwise). Check for obstructions. |
| Door is difficult to open | Excessive spring power. | Decrease spring power (counter-clockwise) until desired opening force is achieved, ensuring ADA compliance if applicable. |
| Oil leakage | Damaged seals or closer body. | Contact LCN customer support or a qualified technician for repair or replacement. Do not attempt to repair yourself. |
8. Specifications
- Model: 4041-DEL-Rw/PA
- Brand: LCN
- Type: Heavy Duty Door Closer
- Mounting: Surface Mount, Tri-Pack Arm (Regular Pull Side, Top Jamb, Parallel Arm)
- Cylinder Type: Delayed Action
- Arm Type: 62PA Arm
- Cover: Plastic
- Spring Size: ADA Adjustable, Size 1-6
- Grade: Grade 1
- Screw Pack: TBSRT
- Finish: 689/AL Aluminum Powder Coat (Gray)
- Material: Cast Iron (Closer Body), Metal (Arm)
- Item Weight: 12 pounds
- Package Dimensions: 14 x 5 x 4 inches
- Specification Met: BHMA
- ASIN: B007KGH2OE
9. Warranty and Support
For specific warranty information, please refer to the documentation provided with your purchase or visit the official LCN website. LCN products are known for their durability and quality, backed by manufacturer support.
If you require technical assistance, have questions about installation, or need to report a defect, please contact LCN customer service directly. Contact details can typically be found on the manufacturer's website or product packaging.