Introduction
The document outlines the specifications and operational details of CYCLAIR®, a mobile differential pressure device designed to protect people and the environment from radioactive particles. It is used for processing alpha and beta radiation particles and is manufactured in France.

Specifications
CYCLAIR® is available in three models: 500, 1500, and 3000, each with different nominal flow rates (500 m3/h, 1,500 m3/h, and 3,000 m3/h respectively). The fan power ranges from 0.55 kW to 2.2 kW, and the sound pressure levels are between 74.2 dB(A) and 77.3 dB(A). The filtering surface varies from 7 m2 to 41 m2, and all models have a URANIN purification coefficient greater than 5,000.

Operation
The device applies negative pressure to work areas to prevent the spread of contaminants. Air is drawn in through flexible ducts and purified using a VHE filter. The system's efficiency is dependent on the sensor's position relative to the pollution source. Filter replacement is conducted in a vinyl bag to contain contaminants.

Design and Features
CYCLAIR® features a robust, airtight design with an optimized center of gravity to prevent tipping. It includes an electric control cabinet with a circuit breaker, discontactor, inverter, phase controller, and an audible alarm. The device also has a built-in electronic board with RS 485 link using MODBUS protocol and a digital display for fault and pressure loss indication.

Options and Accessories
Optional output transformers are available for different outlet plug sizes. The device is equipped with emergency stop controls and fault indicator displays on the front panel.

Conclusion
CYCLAIR® is a versatile and efficient solution for air filtration in environments at risk of radioactive contamination, offering robust construction and advanced control features.