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LCN 4631AL Electrohydraulic Low-Energy Door Closer with Auto Equalizer Technology
The LCN 4631AL is an advanced electrohydraulic door closer engineered specifically for low-energy automatic door operation in demanding commercial environments. It boasts Grade 1 ANSI A156.19 certification, an adjustable power size from 1 to 4, and is fully ADA compliant, ensuring precise, safe, and reliable door control.
Quick Answer
The LCN 4631AL delivers unparalleled safety, compliance, and enduring performance for low-energy automatic door operation through sophisticated electrohydraulic control.
✓Electrohydraulic Low-Energy Automatic Operation
✓ANSI A156.19 Grade 1 & ADA Compliance
✓Non-Sized Adjustable Power Range 1-4
✓Cycle Tested to 10,000,000+ Operations
✓Robust Cast Iron Body Construction
✓Surface Mounted Top Jamb Pull Side Installation
The LCN 4631AL represents a pinnacle in electrohydraulic low-energy door control, expertly combining robust Grade 1 construction with sophisticated electronic precision. Its extensive certifications (ANSI A156.19, ADA, UL) and exceptional 10,000,000+ cycle durability make it an optimal choice for high-compliance commercial installations prioritizing safety, accessibility, and longevity.
✓ Who Should Buy
- •Facilities requiring ADA-compliant low-energy automatic door operators.
- •Commercial establishments demanding durable, high-cycle door control for heavy usage.
- •Projects requiring precise electrohydraulic management of closing and latching speeds.
- •Installations on interior and exterior wood or metal doors within the 914-1219mm width range.
- •Engineers and architects specifying reliable, certified door control for public access points.
✕ Who Should Avoid
- •Applications strictly requiring a fire-rated door closer.
- •Installations on doors exceeding the specified 1219mm width capacity.
- •Budget-constrained projects where purely mechanical, non-automatic door closers suffice.
Product Overview
The LCN 4631AL, a distinguished model within the 4630 / 4631 Auto Equalizer series, is a USA-manufactured electrohydraulic door closer designed for commercial interior and exterior applications requiring low-energy automatic door functionality. Its robust cast iron body with an aluminum powder-coated finish ensures longevity and aesthetic integration. This non-handed, surface-mounted unit (top jamb pull side) accommodates door widths from 914 mm to 1219 mm (36 to 48 inches). Critical features include electrohydraulic control for both closing and latching speeds, integrated back-check, and a hold-open function. The 4631AL meets rigorous industry standards, holding Grade 1 certification, and is compliant with ANSI A156.19, ANSI A117.1, UL, and ADA requirements, signifying its suitability for accessible and high-traffic environments. It provides an adjustable power range of 1-4, allowing precise calibration to specific door and operational needs. Please note, this model is not fire-rated.
| Brand | lcn |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | Electrohydraulic |
| Series | 4630 / 4631 Auto Equalizer |
| Model Year | 2018-2026 |
| Country Of Origin | N/A |
| Intended Use | Low Energy Automatic Door Operation |
| Suitable For | Commercial Interior & Exterior Doors |
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Engineering Analysis
The LCN 4631AL's core engineering strength lies in its electrohydraulic control system, which represents a significant advancement over purely mechanical hydraulic closers. This integration of electrical actuation with hydraulic dampening allows for unparalleled precision in regulating both closing and latching speeds. Unlike traditional closers where valve adjustments are manual and can be inconsistent, the electrohydraulic mechanism provides consistent, repeatable control, crucial for maintaining specified opening and closing times inherent in low-energy automatic door operation. This system dynamically manages resistance, ensuring smooth deceleration and gentle latching, which significantly reduces wear on the door and frame hardware while enhancing user safety.
Compliance and Precision: Adherence to ANSI A156.19 for low-energy power-operated doors is central to the 4631AL's design. This standard dictates precise force and speed parameters to ensure safety for users, including those with disabilities. The adjustable non-sized power range (1-4) combined with electrohydraulic control allows for meticulous calibration to meet these strict force limits, preventing excessive opening or closing forces. Furthermore, its ANSI A117.1 and ADA compliance underscores its suitability for universal accessibility, ensuring doors operate within safe, predictable parameters for all users. The UL listing provides independent verification of its safety and performance attributes under various conditions. While the product data specifies 'fire_rated: false', this indicates its primary application is for automated access control where fire compartmentalization is handled by other door assembly components, not the closer itself.
Door Control Precision: The inclusion of back-check provides hydraulic resistance beyond a specific point in the opening swing (up to 170° manual, 90° powered), safeguarding the door and frame from abrupt impacts, particularly in windy conditions or during vigorous manual opening. The hold-open function integrated into the electrohydraulic system allows the door to remain open at specified angles, which can be advantageous for temporary passage or ventilation, though careful consideration of its use with automatic operators is required based on specific code interpretation. The 4631AL's ability to withstand 10,000,000+ operational cycles attests to its robust mechanical and hydraulic design, leveraging a durable cast iron body and high-quality hydraulic seals, making it exceptionally reliable for high-traffic commercial installations.
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Engineering Analysis
The LCN 4631AL's core engineering strength lies in its electrohydraulic control system, which represents a significant advancement over purely mechanical hydraulic closers. This integration of electrical actuation with hydraulic dampening allows for unparalleled precision in regulating both closing and latching speeds. Unlike traditional closers where valve adjustments are manual and can be inconsistent, the electrohydraulic mechanism provides consistent, repeatable control, crucial for maintaining specified opening and closing times inherent in low-energy automatic door operation. This system dynamically manages resistance, ensuring smooth deceleration and gentle latching, which significantly reduces wear on the door and frame hardware while enhancing user safety.
Compliance and Precision: Adherence to ANSI A156.19 for low-energy power-operated doors is central to the 4631AL's design. This standard dictates precise force and speed parameters to ensure safety for users, including those with disabilities. The adjustable non-sized power range (1-4) combined with electrohydraulic control allows for meticulous calibration to meet these strict force limits, preventing excessive opening or closing forces. Furthermore, its ANSI A117.1 and ADA compliance underscores its suitability for universal accessibility, ensuring doors operate within safe, predictable parameters for all users. The UL listing provides independent verification of its safety and performance attributes under various conditions. While the product data specifies 'fire_rated: false', this indicates its primary application is for automated access control where fire compartmentalization is handled by other door assembly components, not the closer itself.
Door Control Precision: The inclusion of back-check provides hydraulic resistance beyond a specific point in the opening swing (up to 170° manual, 90° powered), safeguarding the door and frame from abrupt impacts, particularly in windy conditions or during vigorous manual opening. The hold-open function integrated into the electrohydraulic system allows the door to remain open at specified angles, which can be advantageous for temporary passage or ventilation, though careful consideration of its use with automatic operators is required based on specific code interpretation. The 4631AL's ability to withstand 10,000,000+ operational cycles attests to its robust mechanical and hydraulic design, leveraging a durable cast iron body and high-quality hydraulic seals, making it exceptionally reliable for high-traffic commercial installations.