After the use of the clean area is changed, why does the original FFU configuration need to be rechecked?

The area has not changed, but the demand may have changed.

During the use of the clean area, the purpose may be changed due to product adjustments, process changes or production capacity changes. For example, an area originally used for general electronic assembly was changed to precision assembly or medical device production. The area originally used for packaging was changed to critical process operations.

The room area and number of FFU may not change, but after the use is changed, the dust volume, number of personnel, equipment heat load and pollution sensitivity may be different. The original FFU configuration was designed for the old purpose and may no longer match the new purpose.

Therefore, after the use of the clean area is changed, the original FFU configuration needs to be rechecked. Just because the area has not changed, it does not mean that the air volume and filtration configuration can be directly used. Aili Industrial has complete production capabilities in FFU complete machines and clean engineering supporting equipment, and can coordinate with the project for configuration review. For the basic structure of the FFU machine, you can refer toAili Industrial FFU fan filter unit。

What differences do changes in use bring?

Changes in use may bring about differences in several aspects. Product exposure changes, and new processes may be more sensitive to particles. As personnel and operation methods change, the number of personnel, frequency of actions, and material flow may be different. Equipment changes. New equipment may generate more heat, generate more dust, or require process exhaust. Cleanliness level requirements change, and new uses may require higher or different cleanliness levels.

These differences will affect the air supply volume, filtration efficiency, airflow organization and control method of FFU. These requirements should be re-evaluated following changes in use.

How dust generation and pollution loads can be reassessed

Dust generation and pollution loads are the basis for FFU configuration. After a change of use, sources of particles in the room should be re-evaluated. Include the number of personnel, equipment dust generation, material handling, process emissions and cleaning methods.

If the amount of dust generated by the new use increases, a larger air supply volume or a higher number of air changes may be required. If the new use is more sensitive to contamination, higher efficiency filters and better airflow organization may be required.

The assessment can incorporate process flow diagrams, equipment lists, and personnel schedules. If necessary, the particle data under the old use can be measured as a reference for comparison.

How to review air supply and airflow

Air supply and airflow review includes air volume, air change times, wind speed and airflow direction. After the use changes, the target wind speed or air exchange rate may be different. The original number of FFU may be insufficient or excessive.

You can refer to it when reviewingThe FFU quantity is calculated based on the number of air changes or the air supply area (note: this link is an example of the FFU product page, please refer to the corresponding page on the site for the specific quantity calculation content) to understand the calculation method. For key areas, it should be confirmed whether the FFU air supply coverage meets the requirements for new uses.

If new uses require adjustments to the layout, the location and number of FFUs may need to be changed.

How to review filtering configuration

Filtration configuration includes filter efficiency rating, sealing method and replacement interval. After the use changes, if the cleanliness level requirements increase, a higher efficiency filter may be required. If the pollution load increases, more frequent changes or a larger dust-holding capacity filter may be required.

For the relationship between filter efficiency level and cleanliness level, please refer toUnderstand why FFU filtration level cannot be directly equivalent to ISO cleanliness level (Note: This link is an example of a filter product page, please refer to the corresponding page on the site for specific content).

How to review controls and operations

After the use changes, the operating mode and control method may need to be adjusted. If new uses require different wind speeds in different areas, the group control system may need to be rezoned. If the new application requires constant air volume control, the controller settings may need to be adjusted.

For useFFU/EFU group control touch screen controller orFFU computer group control system project can confirm whether the system supports the control requirements of new uses.

What to do after rechecking

After rechecking, several outcomes are possible. The original configuration meets the requirements of the new use, and only the operating parameters need to be adjusted. The original configuration is partially satisfied, but it is necessary to replace the filter or adjust some FFU. If the original configuration is not satisfactory, it is necessary to add FFU, adjust the layout, or replace the equipment.

The handling method should be determined based on the verification results. For projects that require renovation, you can refer toWhen the FFU transformation can only be shut down in stages, how to plan trial installation and switchover to understand the transformation plan.

Issues that should be confirmed in advance during project communication

During the clean area use change and FFU review stage, it is recommended to confirm the following with the FFU manufacturer and designer: process requirements for the new use; cleanliness levels and targets; dust generation and pollution loads; changes in personnel and equipment; air supply and airflow requirements; filtration configuration requirements; control and operation methods; whether modification and verification are needed.

If you are dealing with the FFU review after a clean area change of use, you can visitAili Industrial FFU fan filter unit understands the complete machine configuration. You can also contact Aili Industrial for configuration review support.

in conclusion

After the use of the clean area is changed, the dust generation, personnel, equipment heat load and pollution sensitivity may change, and the original FFU configuration needs to be rechecked. The area has not changed, which does not mean that the air volume and filtration configuration can be directly used. The review includes assessment of dust generation, air supply and airflow, filtration configuration, controls and operating methods.

Aili Industrial has complete production capabilities in FFU complete machines and clean engineering supporting equipment, and can coordinate with the project for configuration review. If you need to know more about the FFU configuration after the change of clean area use, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.