How to detect leaks between ULPA frame and ceiling? System seal boundary demarcation

the ULPA filter frame and the suspended ceiling should cover the installation sealing boundary specified in the design, and cannot only scan the filter material. The leak detection between It is necessary to first distinguish what roles the filter element outer frame, installation keel, compression parts and ceiling joints play respectively. Whether the leakage point is in the filter material or the installation interface, the troubleshooting path is completely different. Aili Industrial has corresponding capabilities in filter manufacturing, sheet metal processing and complete machine assembly, and can cooperate to check the sealing boundary during the leak detection range division stage.

1. Draw a clear detection boundary and first clarify the responsibilities of each component.

According to the interface diagram, identify the bypass paths that the clean side may come into contact with, and list the gaskets or liquid tanks, keel connections, and penetration locations. Covers that are merely decorative are not a substitute for airtight connections.

If the detection boundary is not clearly drawn, the scanning range will be missed or repeated. Please refer to the key points of ULPA installation and sealing.ULPA ultra-high efficiency filter FAQ and selection guide。

2. Check the reachable area of ​​the probe

Confirm that corners and areas near fasteners can be scanned as specified. When shielding is used, the structure or testing procedures should be adjusted to identify the uncovered areas, and inaccessible areas cannot be directly recorded as qualified.

Heightened frames, stiffeners, and flange structures may all cause obstruction. If the glue seam is blocked after the frame is raised and fixed, the detection window needs to be adjusted simultaneously instead of removing the glue seam from the inspection range. Please refer to the interface and space restrictions installed on the device side.the fan filter unit on the EFU equipment side .Instructions related to

3. Make structural rectification targeted

If the joint between the frame and the ceiling is abnormal, the contact surface, sealing continuity and frame deformation should be checked to avoid filling the surface with glue without solving the real air leakage path.

Ai Li Industrial can be combined withFor HEPA/ULPA filter filter frame manufacturing and ceiling sheet metal interface, the sealing surface position, compression method and leak detection accessibility should be checked under the same drawing to reduce the need to rely on glue repair on site. The installation structure on the side of the suspended ceiling system can matchFFU fan filter unit discussion.

4. The intersection between the corners and the keel is the key area

When the center of the filter surface is qualified but the keel intersection is abnormal, the interface inspection scope should be expanded and the joint sealing position of adjacent modules should be checked.

Intersections are often sealed by two modules, and it is easy to miss the mark by looking at one piece of equipment alone. Please refer to the combination of sealing method and leak detection method.HEPA FAQs and Selection Guide。

5. Related questions and answers

Is it considered sealed if there are no gaps in the appearance of the suspended ceiling?
cannot. Cosmetic fit does not prove airtightness, and the installation system should be verified as specified by the project.

Can only scanning the filter surface eliminate air leakage from the frame?
cannot. The boundaries of the local leak detection of the filter element at the factory are different from the leak detection of the installation system. The frame, keel joints and penetration parts need to be covered separately.

How to deal with inaccessible areas?
The structure or testing procedures should be adjusted first to identify the uncovered parts and record them. Directly recording the inaccessible area as qualified will make the acceptance conclusion lose its basis.

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

Ai Li Industrial can be combined withHEPA/ULPA filter manufacturing, sheet metal and complete machine assembly. Check the filter frame, box and sealing interface during Providing the location of leaks, working conditions and installation diagrams during project communication will help separate ontology issues and system bypasses. Ceiling projects can be combinedFFU fan filter unit discusses the installation structure, and equipment-side items can be checked at the same timeEFU equipment side fan filter unit . 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.