When should ULPA be tested for leaks and put into use after installation? Debugging and acceptance conditions

After installation, the ULPA filter should complete leak detection and debugging when the system has stable test conditions, and then be put into use according to the project acceptance requirements. The completion of installation, passing the leak detection and meeting the standards of the process area cannot be regarded as the same thing. Each of these three things has its own conditions and judgment basis. If they are mixed together, it is easy to enter the next stage without doing a solid job in a certain link. Aili Industrial establishes debugging records for each piece of equipment during the entire machine assembly and factory testing process, recording operating parameters such as air volume, pressure difference, and rotational speed. This recording method can be transformed into an inspection framework for on-site debugging, so that each step after installation has a corresponding confirmation basis, rather than judging 'almost' based on experience.

1. Complete the necessary system preparation first. The conclusion will not be reliable when the test conditions are unstable.

Confirm construction cleanliness, pre-filtration status, air volume adjustment and instrument preparation to avoid unstable system conditions interfering with results.

Leak detection and debugging are based on stable system status. The test was conducted when the air volume was still fluctuating, the pre-filter was not installed, and construction cleaning was not completed. The conclusions obtained were not representative. Aili Industry isHEPA/ULPA filters andWhen the FFU fan filter unit leaves the factory for testing, it will first confirm that the air volume, pressure difference and instrument status of the test bench are stable before recording the data; this sequence of 'confirm conditions first, then record results' can be converted into a checklist for on-site debugging to help determine whether the conditions for formal testing are currently met. The relationship between levels and filtering requirements can be found inISO cleanliness level comparison。

2. Complete each verification separately, and distinguish the boundaries of different projects.

Filter element installation and leak detection, air supply volume and uniformity, room or equipment performance are different items, and the sequence and acceptance boundaries should be arranged according to applicable procedures.

The installation leak test verifies the sealing integrity, the air supply volume test verifies the working point, and the room or equipment performance verifies the overall protection effect. The three cannot replace each other. During the factory testing of the complete machine, Aili Industrial carried out installation leak detection, air volume testing and operating parameter recording separately, with each item having an independent basis for judgment. This set of sub-tests can be transformed into a framework for on-site acceptance to avoid the misjudgment that 'if the leak detection is completed, the whole system is deemed to be up to standard.' Please refer to the key points of cooperation between sealing and leak detection.HEPA FAQs and Selection Guide。

3. If the air volume continues to change during the first leak detection, the debugging problem should be solved first.

If the air volume continues to change during the first leak detection, the debugging problem should be solved first before forming a formal test conclusion. Accidental qualified readings cannot be selected.

When the air volume is unstable, the leak detection results will also fluctuate. Aili Industry isEFU equipment end fan filter unit andWhen debugging the FFU fan filter unit , the operating status of the fan will be stabilized first and then the parameters will be recorded. During on-site debugging, the same sequence can be followed, first confirming that the air volume is stable, then performing installation leak detection, and finally recording the baseline data. The test conclusions formed in this way correspond to the actual operating status.

4. Keep the conditions for use and record them for future comparison.

Record operation settings, test reports, rectification results and approval status. After subsequent changes in air volume, layout or sealing, the affected areas should be re-confirmed according to the scope of impact.

The records before being put into use are the starting point for subsequent comparisons. Delivered by Aili IndustrialULPA ultra-high-efficiency filters can cooperate with the project party to establish installation and debugging baselines, matching model numbers, installation points, operating parameters and test results; supportingThe FFU computer group control system can record the operating status of the partitions to facilitate subsequent judgment of whether rising resistance and changes in air volume are operating normally or abnormally. For the correlation between post-installation baseline and subsequent maintenance, please refer toULPA ultra-high efficiency filter FAQ and selection guide。

5. Related questions and answers

Can passing the leak detection prove that the cleanliness is qualified?
cannot. Leak detection verifies installation integrity. Cleanliness is also related to air flow, pollution sources and operating status. The two are different verification items.

Can leaks be detected immediately after installation?
It should be confirmed that the system air volume is stable, pre-filtration is in place, and construction cleaning is completed before proceeding. When conditions are unstable, the representativeness of test conclusions is limited.

What needs to be recorded before putting it into use?
At least include operation settings, detection reports, rectification results and approval status. After subsequent changes in air volume, layout or sealing, the affected areas should be re-confirmed according to the scope of impact.

6. Related articles

ULPA ultra-high efficiency filter FAQ and selection guide

HEPA FAQs and Selection Guide

FFU FAQ and technical support

EFU FAQ and technical support

7. Key points for selection and acceptance inspection

8. Product matching and technical support from Aili Industrial

Aili Industrial establishes debugging records for each piece of equipment during the entire machine assembly and factory testing. Parameters such as air volume, pressure difference, and rotational speed are recorded after the test conditions are stable. Installation leak detection, air volume testing, and operating parameters are carried out separately. This set of practices can be transformed into an inspection framework for on-site debugging, helping to distinguish whether the test conditions are met and whether the boundaries of each verification are clear.HEPA/ULPA filters withWhen the FFU fan filter unit is delivered, it can establish an installation and debugging baseline.The FFU computer group control system can record the operating status of partitions for subsequent comparison. Device-side projects can be combinedof the fan filter unit at the EFU equipment end . Confirm the debugging and leak detection conditions Provide process objectives, installation drawings, operating conditions and acceptance requirements for further communicationULPA ultra-high efficiency filters . Standard specifications, non-standard interfaces, samples and batch matching of The specific parameters and test range are based on the confirmed model and technical documents.