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Unit size matching | Air volume and resistance confirmation | New machine matching and replacement customization
Aili Industrial FFU is equipped with ULPA ultra-high-efficiency filter for particle filtration in the fan filter unit. U15, U16 or U17 configurations can be confirmed according to project requirements.
Product selection also considers the FFU box size, fan operating capacity, installation sealing and maintenance methods. It can be configured together with the Aili Industrial FFU, or the replacement parts solution can be evaluated based on the drawings and operating parameters of other existing units.
Get supporting specifications → Submit FFU model and size →
name |
content |
name |
content |
|---|---|---|---|
Supporting equipment |
FFU fan filter unit |
filter level |
U15, U16, U17, confirm by model |
Product size |
Configuration according to unit installation interface |
Filter material selection |
fiberglass or PTFE |
Install seal |
Gasket or liquid tank, confirm according to structure |
Performance matching |
Air volume, resistance and fan operating point |
Replacement method |
Confirm according to the disassembly and assembly structure of the unit |
Matching form |
New machine matching, original machine replacement, non-standard customization |
Confirm the outer frame size, thickness, tolerance and sealing position according to the installation position of the unit filter. The size of the FFU module may be different from the actual size of the filter. When purchasing, please refer to the installation drawing or original filter size as the basis.
Confirm the resistance of the filter at the designed air volume, and check the fan operating point in combination with other resistances of the FFU. Filter selection needs to take into account both the initial operation and the air supply demand after the resistance increases in the later period.
According to the upper disassembly, lower disassembly or other maintenance methods, confirm the filter fixed position, removal path and operating space, so that the product corresponds to the unit maintenance structure.
The replacement configuration can be checked based on the old filter nameplate, box drawings and actual operating parameters. When upgrading the level, confirm whether the original fan and control conditions are suitable.
Parameter items |
Product configuration or confirmation content |
|---|---|
Product name |
FFU equipped with ULPA ultra-high efficiency filter |
Supporting units |
Aili Industrial FFU or other FFU confirmed by the interface |
filter level |
U15, U16, U17, confirmed according to product test results |
filter material |
Glass fiber or PTFE, confirmed according to process and performance requirements |
Filter element structure |
Configuration according to installation space, air volume and resistance |
Overall dimensions |
Width W × Height H × Thickness D, confirm according to the installation position |
Rated air volume |
Matches the design air volume of a single FFU |
initial resistance |
Provide data for corresponding models under specified air volume |
final resistance condition |
Confirmation of project maintenance requirements and fan capacity |
Sealing method |
Gasket seal or tank seal |
fixed structure |
Press fasteners, supporting frames or other unit structures to confirm |
Protection configuration |
Net protection and accessories are confirmed upon request |
Airflow direction |
Install according to product identification and unit air flow path |
Testing data |
Efficiency, scanning leak detection and agreed delivery documents |
The specific size, air volume, resistance and configuration are subject to the corresponding model specifications and confirmed drawings.
The nominal size of the FFU module cannot be directly used as the filter processing size. The box frame, supporting structure and installation clearance will affect the filter dimensions.
Check items |
Confirm content |
|---|---|
Unit module size |
Installation dimensions of FFU on the ceiling or equipment |
Filter frame size |
Width, height and thickness required for actual installation |
Effective air outlet area |
The air outlet area after deducting the frame and occlusion |
Sealing contact surface |
Corresponding installation position of gasket or liquid tank |
Fixation and support |
Supporting surface, pressing position and mechanical limit |
maintenance space |
Access paths and clearances required to remove the filter |
When customizing or replacing, it is recommended to provide the FFU model, filter size diagram and installation location photos.
The face wind speed that FFU needs to achieve should be converted into operating air volume based on the effective air outlet area.
Operating air volume (m³/h) = target average surface wind speed (m/s) × effective air outlet area (m²) × 3600
This conversion is used to confirm air supply requirements. The final air volume and wind speed should be verified through actual measurement, and the measurement location and method should be clearly defined.
Operational requirements |
Conditions to be checked |
|---|---|
Target surface wind speed |
Specified average wind speed and measurement conditions |
Single operating air volume |
The processing air volume corresponding to the effective air outlet area |
Wind speed distribution |
The influence of fan, box and filter element configuration on air output |
Speed range |
Can control settings cover actual operating requirements? |
Post run |
Can the required air supply volume be maintained after the resistance increases? |
After replacing or upgrading the filter, the unit resistance may change. The original speed or air volume at the control setting may also change accordingly.
When selecting, you should check:
Filter resistance: corresponds to the initial resistance under the design air volume and the final resistance conditions specified by the project.
Other resistances: internal air flow channels, protective nets, air inlet conditions and external system resistance of the unit.
Fan capacity: corresponding air volume under resistance, operating speed and available adjustment range.
Overall machine performance: actual wind speed, uniformity, noise and input power, confirmed according to project requirements.
Aili Industrial has the ability to support fans, motors, control systems and filters, and can jointly confirm the filter parameters and the operating conditions of the FFU machine.
Check the surface, width and compression conditions of the gasket to ensure continuous sealing contact. The fixed structure of the unit should be pressed evenly around the unit to avoid local gaps.
Check the position and size of the filter tank and FFU blade. Maintain alignment during installation, and implement insertion and positioning conditions according to the matching design.
For lower-down FFU, it is necessary to confirm that the filter can be safely removed from the maintenance side; when replacing the structure above, it is necessary to check the upper operating space of the ceiling. The fixing parts, limiting parts and sealing structure should be confirmed together with the replacement method.
The sealing part is responsible for the interface sealing, and the weight of the filter should be borne by the specified support and fixed structure.
Project status |
What needs to be confirmed |
|---|---|
Replace with same level |
Size, air volume, resistance, sealing and fixed structure |
HEPA upgraded to ULPA |
Process necessity, fan capacity and complete machine re-verification |
U15 upgraded to U16 or U17 |
Pressure drop, speed adjustment margin and acceptance requirements of designated models |
Glass fiber changed to PTFE |
Process material requirements, actual pressure drop and component adaptation |
Original model discontinued |
Original nameplate, drawings, reports and unit operating data |
Other brand FFU packages |
Installation interface, fan parameters and existing maintenance methods |
The same external dimensions are not enough to confirm that they can be directly replaced. After replacement, the air volume, wind speed, sealing and cleaning performance should be checked as required.
Project type |
Product supporting requirements |
Project type |
Product supporting requirements |
|---|---|---|---|
New clean room |
Matched with FFU module and design air volume |
local clean area |
Configure according to process goals |
Clean shed and production line |
Selection based on operating parameters of a single unit |
Original system upgrade |
Check filtration level and fan capacity |
Device top FFU |
Installation space and interface matching |
Filter maintenance and replacement |
Confirm replacement parts according to original machine parameters |
The specific grade and configuration should be based on process design and acceptance requirements.
Parameter items |
Please provide information |
|---|---|
FFU information |
Brand, model and box structure |
filter level |
U15, U16, U17 or program requirements |
Product size |
Frame width, height, thickness and tolerance |
Operational requirements |
Design air volume or target surface wind speed |
resistance conditions |
Allowable initial resistance, final resistance and fan parameters |
Installation interface |
Gaskets, tanks, supports and fixed structures |
Replacement method |
Upper and lower disassembly or other maintenance methods |
Usage environment |
Temperature, humidity and process material requirements |
Acceptance information |
Test items, reports and complete machine verification requirements |
Procurement arrangements |
Quantity, sample requirements and delivery plan |
After the installation is completed, check the filter peripheral seal, unit air volume and wind speed according to project requirements, and perform corresponding leak detection and clean performance verification.
Keep the initial air volume, wind speed and pressure difference records to facilitate subsequent judgment of the filter status. The FFU group control project should also check the unit address, control settings and operating status to avoid misdiagnosing control differences as filter problems.
Aili Industry covers air filter manufacturing, motor manufacturing, independent research and development and production of fans, control system development, sheet metal processing and complete machine assembly.
FFU's matching ULPA filter can be confirmed together with the fan, box and control conditions, providing support for new machine matching, sample verification, original machine replacement and bulk purchasing.
View Aili Industrial FFU products→ Learn about FFU group control system→
Process requirements need to be confirmed first, and then size, sealing, filter resistance and fan capacity need to be checked.
Not necessarily, the filter installation diagram or actual frame size should prevail.
Confirm based on actual air volume and wind speed, and cannot directly use the original settings to judge performance.
The matching package can be evaluated, and the fixed structure, sealing interface and removal space need to be confirmed.
The adaptation conditions can be checked based on the drawings, original filter data and operating parameters.
The sealing and related operating performance should be rechecked according to project maintenance and acceptance requirements.
Please submit FFU model, filter size, filtration level, target air volume and installation interface information. Aili Industrial will help confirm the ULPA filter configuration based on the unit structure and operating conditions.
Consult FFU filter specifications → Submit original model and drawings →
Confirm the level upgrade conditions → Inquire about replacement parts and batch matching →
Aili Industry - from filters to fans, boxes and controls, provides product support for FFU projects.
