The self-cleaning HEPA filter system is consequently designed in accordance to requirements in the nuclear industry:
- so that when a leakage occurs in one module it can be easily detected, and the other modules are not affected.
- whereby the stage 1 is a cleanable HEPA filter cassette which has an individual police – HEPA filter cassette as a second security level.
- by laser particle counters it can be proven that the seal of the HEPA cassette is undamaged and the filter medium of the police – HEPA filter cassette has no leakage.
During validation, and if required also during operation, it can be proven and protocoled in each individual module, that the filtration efficiency H14 EN 1822 has been reached at any time and that no dust particles and pollutants have been emitted into the environment.