Personnel Airshower
Air SHOWER
Air Showers are units which are used in cleanrooms in the fields of micro-electronics, semi-conductor production, airbruch painting, pharmaceutical and food industry, to remove dust from the outer surfaces of operator's clothing before entering the clean and dust-free area.
This thorough dust removal effect is obtained by special aluminium jets which blow filtered air at high speed (more than 25 m/s) to the clothing of the operator. In this way dust particles, powder residues and other particles are removed by the air which flows from different directions (even from above) against the operator. The air is then drawn downwards due to the light negative pressure against the surrounding air and is recirculated through G3 prefilter grid. After being treated by the G3 prefilter and high efficient HEPA filters the air is recirculated into the shower again. The resulting clean air corresponds to ISO 5 class quality as per standard ISO 14644-1.
Technical Specification
Construction:
The entire housing of the air shower is of stainless steel AISI 304L 4B (Scotch Brite). The doors are of laminated safety glass, thickness 8 mm, evenly mounted to the housing (without unsightly aluminium frame), one in front of the other or centrally mounted, electro-magnetically counterlocked opening system allows opening after each dedust cycle. Handles of stainless steel.
Ventilation:
Centrifugal double-suction ventilator, nominal airflow rate 2.400 m³ / h at working pressure of 1.600 Pa.
Filtration:
1 ea. HEPA-Filter, class H14 with high pressure output, according to CEN EN 1822 and 2 ea. class 3G coarse dust prefilter. Access to the filters for exchaning is from the inspection panel above the shower. The prefilter panels are fitted with a rapid-lock system (without screws).
Pressure control:
With analogue Dwyer manometer for supervising the differential pressure at filter surface.
Air jets:
The air is blown through adjustable aluminium air jets into the shower chamber with internal butterfly valve to regulate the air output. The airspeed is manually adjustable in a range of 20 to 30 m/s.
Reduced airspeed:
The air speed reduction starts automatically after each cycle.
