Clean Room Ventilation and Air Conditioning System
Clean Room Ventilation and Air Conditioning System
The ventilation and air-conditioning system of the clean room has been installed. Before commissioning, it will conduct a comprehensive inspection with the construction unit. The water, electricity, water vapor and compressed air required for the operation of the air-conditioning system should meet the conditions of use and be cleaned on site; Debug plan, prepare instruments and...
Text label: clean room system, clean room system, ventilation and air conditioning system
Clean Room Ventilation and Air Conditioning System
The ventilation and air-conditioning system of the clean room has been installed. Before commissioning, it will conduct a comprehensive inspection with the construction unit. The water, electricity, water vapor and compressed air required for the operation of the air-conditioning system should meet the conditions of use and be cleaned on site; Commissioning plan, prepare instruments, tools and commissioning record forms; be familiar with all design data and calculated state parameters of ventilation and air-conditioning systems, understand design intentions, and master the working principles of air duct systems, cold and heat source systems, and electrical systems; air ducts The control valve, fire damper, smoke exhaust valve, valve plate and blade in the air outlet and air return outlet of the system should be in the open working position; before the air volume of the ventilation and air conditioning system is commissioned, the single fan should be tested first, and the equipment is in good condition and meets the design requirements. After that, the debugging work can be carried out; the instrumentation and necessary tools required for debugging can be eliminated, and various faults in the defect list can be eliminated.
Check whether the model and specification of the fan and motor are consistent with the design; check whether the anchor bolts are tightened, and whether the pulley or coupling is aligned; check whether there is enough lubricating oil at the bearing, and the type and type of lubricating oil added. The quantity should be in accordance with the provisions of the equipment technical documents; check whether the grounding wire of the motor, fan and air duct with grounding requirements is reliable; check the fan regulating valve, it should be flexible after opening, and the positioning device should be reliable; the fan can run continuously when started, and the operation should not be less than 2h; after the single-unit test run of the ventilation and air-conditioning equipment and the air leakage measurement of the air duct system are qualified, the system linkage test run can be carried out, which is not less than 8h; The three-way regulating valve is placed in the middle position, and the various regulating doors in the air handling room should also be placed in the actual operating position; the fan is turned on to measure and adjust the air volume. It is beneficial to the next step debugging work; the system air volume measurement and adjustment, the air volume of the main pipe and the branch pipe can be tested with pitot tubes and micro pressure gauge instruments; The allowable value is not greater than 10%; the sum of the fresh air volume and the return air volume should be approximately equal to the total supply air volume, or the sum of each supply air volume; the total supply air volume should be slightly larger than the sum of the return air volume and the exhaust air volume; the system air volume The measurement includes the measurement of air volume and air pressure. The total air pressure of the system is subject to the total pressure difference before and after the measurement of the fan, and the total air volume of the system is subject to the total air volume of the fan or the air volume of the total air duct. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean rooms.
After the automatic adjustment system is put into operation, the factors affecting the adjustment quality of the system should be identified, the normal operation effect of the system should be analyzed, and the expected effect should be judged; the operation adjustment of each link of the automatic adjustment system should make the '' Each control point of dew point, secondary heater and room temperature always maintains the specified air parameters, which meets the design accuracy requirements; the air volume of the system and the air outlet must be adjusted to achieve a balance, and the deviation between the measured air volume of each air outlet and the design value should not be greater than 15 %; The high-efficiency filter of the clean system and the leakage filtration at the connection between the high-efficiency filter and the frame must meet the design requirements; after the adjustment of the no-load joint operation test, the parameters of the air should be maintained within the range given by the design; the air volume of the fan It is the average value of the air volume at the suction end and the air volume at the pressure outlet, and the difference between the air volume before and after the fan should not be greater than 5%.
The doors and windows of the ventilation and air-conditioning room must be tightly closed, and special personnel should be on duty, and non-staff personnel are strictly prohibited from entering; the power of fans and air-conditioning equipment should be turned on and off, and the electrician should be operated in cooperation with the work. When adjusting the air volume of the system, do not The insulation layer of the air duct should be damaged. After debugging, the insulation layer at the section of the measuring point should be repaired, the measuring hole should be blocked, the regulating valve should be fixed, and the mark should be marked to prevent changes; the automatic control instrument components of the automatic adjustment system, control Special protection measures should be taken for the enclosures, etc., to prevent the loss and damage of the electrical automatic control components.
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