Reasons for insufficient air supply in the purification air-conditioning system 1. Improper fan selection The purification air-conditioning system is different from the ordinary commercial air-conditioning system. It filters the air through the three-stage filters of primary effect, intermediate effect and high efficiency to achieve the purpose of purifying the air. Due to the use of three-stage filtration, the system resistance must be greater. At the same time, with the extension of use time, its resistance value will also increase. 2. Incorrect connection of fan power supply If the power supply of the fan is connected incorrectly, the fan will be reversed or the fan's belt slack will prevent it from reaching the rated speed, resulting in the fan output air volume not reaching the rated value. 3. Rough processing and installation Due to the rough processing and installation, the air-tight box, air duct, soft connection, flange connection and clean room enclosure structure have poor air tightness, resulting in a large loss of system air volume, resulting in insufficient system air supply. 4. Improper valve adjustment in the system The valve fails to open or the opening degree is not enough. The reason is that the valve is not locked with the lock nut after opening. Due to the vibration, the valve closes by itself and the valve switch sign indicates wrong or no sign, causing the valve to be closed but mistaken for opening. 5. Insufficient fresh air volume The supply of fresh air is insufficient due to reasons such as narrow fresh air inlets, clogged fresh air outlets, and too small opening of fresh air valves, which results in insufficient air volume due to the lack of timely compensation for the air volume loss caused by local exhaust and maintenance of positive pressure. Knob Locks,Door Handle Lock,Bedroom Door Lock,Knobs And Locks ZHONGSHAN JUYA METAL PRODUCTS CO., LTD , https://www.gumeilock.com