The Precotech 300 provides fully automatic precoating for TBH filter and extraction systems, applying a protective layer to filter cartridges to extend service life and maintain high extraction quality. Designed for seamless integration with cleanable cartridge systems, it supports multiple operating modes to suit different process requirements. By precisely dosing filter aid into the extraction airflow and coordinating with cleaning cycles, the system reduces manual intervention, protects filter surfaces, and ensures consistent suction performance even in high-dust or sticky particle applications.