The Dormakaba TS93 hydraulic cam action door closer exemplifies sophisticated engineering in door control. At its core, the **hydraulic cam action mechanism** is designed to provide a significantly reduced opening force compared to traditional rack and pinion closers, making doors easier to open and enhancing accessibility in compliance with universal design principles. This cam and roller arm system translates linear arm movement into rotary force with superior efficiency and smoother operation throughout the opening cycle.
**Hydraulic Mechanics and Precision Control**: The internal hydraulic system of the TS93 is meticulously engineered with independent, thermoconstant valve control. This allows for distinct adjustment of critical door control phases:
1. **Closing Speed**: Governs the primary closing arc, typically from 180° to 15°, preventing uncontrolled door slamming.
2. **Latching Speed**: Controls the final 15° of travel, ensuring the door firmly engages with the lock without excessive force, crucial for security and sound attenuation.
3. **Delayed Action**: This feature holds the door open for a user-specified duration before the main closing cycle begins, facilitating passage for personnel or equipment, particularly beneficial in high-traffic or accessibility-focused environments.
4. **Backcheck**: An essential safety feature, hydraulic backcheck activates beyond a specific opening angle (e.g., 70°-85°), cushioning the door's opening motion. This prevents damage to the door, frame, and adjacent walls from forceful opening, particularly in windy conditions or areas prone to abuse.
These adjustable valves operate within a robust, sealed hydraulic system, ensuring consistent performance over time and a controlled closing sequence regardless of external factors.
**EN1154 Compliance and Fire Rating**: The Dormakaba TS93 is rigorously tested and certified to **BS EN1154** standards, signifying its compliance with European requirements for door closers. This certification guarantees performance characteristics such as durability, power adjustment, efficiency, and reliability under specified conditions. Furthermore, its **Certifire** accreditation confirms its suitability for use on fire-rated doors. In the event of a fire, the TS93 is engineered to reliably close the door, contributing to compartmentation and preventing the spread of fire and smoke. The robust steel body material further reinforces its structural integrity, critical for maintaining fire barrier efficacy. The adjustable power size range of EN2-5 enables precise force calibration to meet varying door specifications while maintaining compliance.
