Wei, a central air-purifying efficacy testing a) anion concentration: 30cm export at 200,000 / cm3; air anion concentration tester. b) air-conditioning outlet respirable particulate matter PM10: ≤ 0.08mg / m3; laser dust tester. c) the total number of bacteria ≤ 500 cfu / m3; total plate exposure sedimentation d) fungi ≤ 500 cfu / m3; plate exposure sedimentation e) β- hemolytic streptococcus and other pathogenic microorganisms may not be detected; blood nutrient agar culture Assay f) increase the amount of ozone ≤ 0.10 mg / m3; portable ozone detector. 7. purification device maintenance a) Safety static power, does not affect the normal operation of air conditioning and other equipment; b) cleaning, maintenance: When you need cleaning, first turn off the power, remove the cleaner module respectively, direct wash water, After cleaning, dry for 15-30 minutes, put back into place, the first 10 minutes open fan wholesale central air purification and disinfection, and then open the air purifier. c) cleaning intervals depending on the environment and other factors, usually 1-2 months. Model: VBY-H Wei, a central air-conditioning air purification and disinfection unit in accordance with <>, the use of a semiconductor Wei Wei disinfection purification technology and a dual light wave reactor technology sterilization latest an air purifier equipments. The aircraft use double sterilization air purification, attract air pollutants solve indoor air quality problems. It is currently China's leading central air purification equipment. First, Wei a central air-conditioning, plasma air purification profile 1, primary filter to prevent small animals and large particles into the air conditioning. 2, electrostatic dust filter dust collector is the use of pre-charge extremely nonuniform electric field, forming a corona discharge Quotes central air purification and disinfection, a large number of electrons and positive ions contained in the electric field gradient of central air conditioning and cleaning disinfection, and airborne particles inelastic collision, thereby attached to the top, making charged particles. Under an applied electric field force central air purifier sterilizer prices charged particles migrate to the collecting electrode, the dust finally deposited on the pole. 3, plasma catalytic filter in the process of generating plasma, the high frequency discharge produces instant high-energy, open some harmful gas molecules bond, in particular the removal of air pollutants, can make it in a very short period of time or even completely decomposed. 4, negative ions, increase air vitamins.