Endorsement has been attained for part three of the standard relating to “hygienic standards for ventilation and air-conditioning systems in production facilities and business enterprises”. The tests were performed by the Labor Dr. Rabe Hygiene Consult laboratories in Germany, which carries quality management accreditation according to DIN EN ISO/IEC 17025.

Seeley International (Europe) was awarded the compliance certificate after 16 months of rigorous live testing, carried out on its Breezair Evaporative Air Cooling system at the international furniture manufacturer Mathias Wiemann near Osnabrúck, Germany where the air was already laden with bacteria, spores and endotoxins. Testing of the Breezair installation was undertaken using the VDI 6022 standard regulations, norms and guidelines encompassing hygiene; planning; manufacture and execution; operation and maintenance and industry-specific requirements.
 
Of particular interest to existing and potential users of Breezair coolers will be the results of the general ventilation testing. Results included the quality of the input air and any potential health hazards as well as the quality of the air leaving the cooler. According to the VDI standard, ventilation and airconditioning equipment for production-related areas should improve air quality in respect of particles, odours, moisture and excess heat, in addition to protecting personnel against the effects of harmful and irritating airborne substances. During testing it was found that Breezair air coolers that were set up with a daily pad drying cycle of 60 minutes, removed 53% of bacteria from the air, thereby providing very effective air scrubbing and removal of most of the impurities from the air delivered into the factory.

The VDI Standard also demands that for all air conditioning environments, ventilation and air conditioning equipment must be designed, operated and maintained in such a way that increased risk, due to harmful chemicals and inorganic and organic pollution is prevented. Testing found that Breezair greatly reduced bacteria and endotoxins as well as fungal spores. The Standard also covers industry-specific requirements for the food, timber, textile, printing and automobile industries, which require high levels of humidity to prevent moisture evaporation from products. Breezair was found to be ideal for these industries as evaporative air-cooling adds water vapour to the air, increasing the relative humidity and reducing the vapour pressure deficit (VPD), which is the force that removes water from the environment.

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