The Dormakaba ITS96 operates on a highly refined hydraulic principle, leveraging an internal oil-damped system within its aluminium alloy body. This hydraulic mechanism provides the core resistance and damping necessary for controlled door movement. Adjustable valves allow for independent regulation of both the closing speed (from maximum opening angle to the final latching point) and the latching speed (the final few degrees of closing). This dual-valve system ensures that doors not only close reliably but also overcome latch resistance without slamming, preventing damage to the door, frame, and hardware. The precision achieved through these adjustments is paramount for applications demanding consistent, quiet operation and extended hardware longevity.
EN1154 certification is a cornerstone of the ITS96's credibility. This European standard specifies the requirements for controlled door closing devices, including durability, efficiency, and safety. Achieving EN1154 signifies that the ITS96 has undergone rigorous testing to withstand extensive operational cycles while maintaining consistent performance. Its rated power sizes, EN2-4 and EN3-6, correspond to specific door masses and closing forces as defined by the standard, guaranteeing that the closer can effectively manage doors up to 130kg and 1100mm wide under various conditions. The absence of a specific cycle test rating in the product data is superseded by its EN1154 compliance, which inherently includes stringent durability testing requirements.
A critical attribute of the Dormakaba ITS96 is its Certifire rating and explicit fire-rated designation. This certification confirms that the closer will perform its intended function of ensuring the door closes completely and securely in the event of a fire, maintaining the integrity of fire compartments. Unlike non-fire-rated units, the ITS96 is designed with materials and internal components that maintain functionality under elevated temperatures, preventing the spread of smoke and flames. The concealed mounting, while aesthetically pleasing, does not compromise its fire safety performance, making it an indispensable component for compliant fire door assemblies. The integrated hold-open function, configurable up to 130 degrees, allows for temporary propping open, yet its controlled disengagement in a fire alarm scenario (if linked to a fire system, though not explicitly stated as an electronic feature here, implied by general fire door closer function) ensures safety.
