Can different FFU filter configurations be used in different areas of the same clean room?
The same clean room can be configured in partitions
In clean room design, different areas in the same room may have different cleaning requirements. For example, critical process areas require higher cleanliness, while auxiliary areas or passages require relatively low cleanliness. At this point, is it possible to use FFU with different filtering configurations?
The answer is that configurations can be filtered differently by regional risk assessment. But this approach requires clear area definition, airflow connections, and detection targets. Different configurations of FFU will affect the resistance and working air volume, and cannot be partitioned only by efficiency level.
Therefore, the same cleanroom zoning configuration is possible but requires system verification. Aili Industrial has complete production capabilities in FFU complete machines and filters, and can provide FFU solutions with different filtration configurations. For the basic structure of the FFU machine, please refer toAili Industrial FFU fan filter unit。
How is the area defined?
Zone definitions are the basis for partition configuration. It is necessary to clarify which areas are critical areas and which are auxiliary areas. Area boundaries can be determined based on process equipment, operating locations, personnel movement lines, or physical partitions.
Once the zones are defined, cleanliness levels, airflow patterns and filtration requirements should be set for each zone. Critical areas may require higher efficiency filters and denser supply air coverage. Auxiliary zones may use conventional configurations.
Area boundaries should be marked on drawings to facilitate installation and inspection.
How to consider airflow connections
There may be airflow connections between different areas of the same cleanroom. If there is no separation between the critical and auxiliary areas, airflow may flow from the auxiliary area to the critical area, or vice versa. The direction of airflow affects particle distribution.
If the auxiliary zone has a lower filtration configuration, its supply air particle concentration may be higher than that of the critical zone. If the airflow flows from the auxiliary area to the critical area, the cleanliness of the critical area may be affected. Therefore, the zoning configuration needs to confirm the direction of air flow, usually from the high clean area to the low clean area.
Partitions, pressure differences or airflow separation can be set up between areas to reduce mutual influence.
How to choose filtering configuration
Filtering configuration selection should be combined with regional requirements. Higher efficiency filters such as H14 or U15 can be used in critical areas. The auxiliary zone can use H13 or lower configuration. The resistance of different filters may be different, and the FFU working point needs to be checked separately.
If different filtration configurations are used in the same area, it should be confirmed whether the FFU fan can adapt to different resistances. If the resistance difference is large, different fan configurations or control methods may be required.
How to check resistance and working air volume
Different filter configurations have different resistances and different FFU working points. When zoning is configured, the FFU working point of each area should be checked separately to confirm whether the static pressure is sufficient under the target air volume.
If the project uses a group control system, different speeds or control parameters can be set by area. For details, please refer toFFU/EFU group control touch screen controller andFFU computer group control system understands the partition control scheme.
How to set detection goals
After the partitions are configured, the detection targets should be set separately. The key areas are inspected according to the high cleanliness level, and the auxiliary areas are inspected according to the corresponding levels. The detection locations should cover key points in each area.
If there are airflow connections between areas, boundary areas should also be tested to confirm there is no cross-contamination.
How to do configuration management
Partition configuration needs to be managed. The filtering configuration of each FFU should correspond to the installation area and be recorded in the ledger. If the filter is replaced later, it should be confirmed that the replacement configuration is consistent with the regional requirements to avoid mixing.
Partition configuration management is particularly important for batch deliveries or retrofit projects. Aili Industrial has complete production capabilities in FFU complete machines and filters, and can provide FFU and filter solutions with different configurations to help project zoning management.
Issues that should be confirmed in advance during project communication
During the partition configuration stage of the same clean room, it is recommended to confirm the following with the FFU manufacturer and designer: area definition and cleanliness level; air flow connection and direction; filtration configuration requirements; resistance and working air volume; control method; detection targets and methods; configuration management methods; whether partition debugging is required.
If you are planning the same cleanroom zoning configuration, you can visitAili Industrial FFU fan filter unit to learn about the complete machine configuration, you can also refer toHEPA and ULPA filters Learn about filters with different efficiency levels, or contact Aili Industries for zone configuration support.
in conclusion
The same clean room can have different filtration configurations based on regional risk assessment, but airflow connections, regional boundaries and detection targets need to be clearly defined. Different configurations must check resistance and working air volume separately, and cannot be divided only by efficiency level. Partition configuration needs to be managed and documented.
Aili Industrial has complete production capabilities in FFU complete machines and filters, and can provide FFU solutions with different filtration configurations. If you need to know more about clean room partition configuration, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.
