LCN 4640-159 689 Arm Screw AL

LCN 4640-159 689 Arm Screw AL is an essential component for the 4640 Series, LCN's smart and reliable low-energy automatic operator. This aluminum arm screw is designed to enhance accessibility for individuals with disabilities and the elderly, ensuring ease of entry in both commercial and residential settings. The 4640 Series is particularly suitable for manual opening applications that occasionally require automatic functionality. It features a standard, top jamb (push side) mounted design, complete with a regular arm, metal cover, and a comprehensive screw pack for both wood and machine installations. This model meets ADA requirements in power mode and accommodates interior doors up to 4'6" and exterior doors to 3'6". Versatile in installation, the 4640 is non-handed, making it compatible with right or left swinging doors. Accessible switches enable users to toggle between on/off settings and continuous hold open functions. The control module provides all necessary timing and sequential door functions, while adjustments for opening speed and force ensure optimal performance. Available in a standard or custom powder-coated finish, it features black end caps for a polished look. The matte silver finish (689/US28) adds a contemporary touch to any space.

Arm Screw AL

Arm Screw, Aluminum

The 4640 Series is LCN's smart and reliable low-energy operator.

The 4640 auto equalizer is LCN’s smart and reliable electrically powered low-energy automatic operator. It provides easy access for people with disabilities, or the elderly. Designed primarily for manual opening applications that occasionally required automatic opening.

• Standard, top jamb (push side) mounted 4640 series closer shipped with regular arm, metal cover, and wood and machine screw pack.
• Meets ADA requirements (power mode).
• Non-sized cylinders for interior doors to 4’6” and exterior doors to 3’6”.
• Non-handed for either right or left swinging door.
• 4640 has easily accessible switches to provide on/off and continuous hold open functions. 4640CS provides concealed on/off power switch. Control module provides all timing and sequential door functions, electric strike controls and adjustments for opening speed and force.
• Standard or optional custom powder coated finish, end caps are black.
• Optional plated finish on cover, arm, and fasteners.

Resources

• 4640 Series Electrohydraulic Operators Cut Sheet
• Choosing the Right LCN Auto Operator
• LCN 4600 Series Installation Guide
• LCN 4600 with 8310-856 Wiring Diagram
• LCN 4600CS Series Installation Guide
• LCN 4840 Series Product Guide - Automatic Operators
• LCN Auto Operators Catalog
• LCN Closers & Auto Operators Installation Guide
• LCN RXLXEL with 4600 Wiring Diagram
• Von Duprin Finishes Chart