Q：For clean room of Class 10,000, air conditioning is only started until before the production, at each start-up, light steel fr

A：Room pressure is 1mmAq=1㎏/㎡, namely, room pressure at 1mmAq, which applies 1kg pressure onto 1 square meter of wall surface, floor and ceiling. Above case may be caused by excess room pressure during start-up, absence of pressure release valve or insufficient opening of pressure release valve; for laminated hard plastic sheet is light, and it’s not properly fixed on light steel frame.
Solutions:
①Regulate room pressure to a proper value
②Fasten and seal laminated hard plastic sheet
③Make adjustment or install appropriate pressure release valve