Floor-standing air purifier

filter

Powder units •Clean work station for weighing of raw material and taking samples of it •Protects also the operator and environment •Filtration in two, three or four steps •Dimensions and materials according to the customer’s needs •Several options to choose: – light fixtures – half speed function – side walls or curtains – velocity gauge and alarm functions – fresh air connection – built-in cooling or heating element – interlocking with general ventilation •Air curtain can be included to ensure free entrance to the working area Function Air recirculates in the module normally through 3 set of filters. Air circulates through grilles close to the floor in the back wall of work chamber. The first filtering step is after the grilles. Class of filters is EU3 – EU5. Biggest part of visible particles are filtered in this step. The next filtering step is EU6 – EU9 where rest of the visible particles and big part of smaller particles are filtered. After this air is blown into a plenum through fans. Bottom of the plenum (ceiling of the work chamber) is built of HEPA -filters EU13 – EU14. Air streams through HEPA -filters and parallel down through the work chamber. The parallel (laminar) air flow effectively keeps the work chamber clean, free of particles. A small air volume is exhausted from the circulation through a small HEPA -filter on top of the plenum (or on side). Same air volume is taken in from ventilation system of the building or directly from the ambient.