{"id":5958,"date":"2026-08-31T09:44:13","date_gmt":"2026-08-31T01:44:13","guid":{"rendered":"https:\/\/www.bacintl.com\/?p=5958"},"modified":"2026-08-31T08:38:10","modified_gmt":"2026-08-31T00:38:10","slug":"installation-specification-sealing-process-and-leak%e2%80%91test-acceptance-criteria-for-paper%e2%80%91separated-hepa-filters","status":"publish","type":"post","link":"https:\/\/www.bacintl.com\/fr\/installation-specification-sealing-process-and-leak\u2011test-acceptance-criteria-for-paper\u2011separated-hepa-filters\/","title":{"rendered":"Installation Specification, Sealing Process and Leak\u2011Test Acceptance Criteria for Paper\u2011Separated HEPA Filters"},"content":{"rendered":"

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Pre\u2011installation preparation lays the foundation for construction quality. First, verify equipment parameters to confirm that filter grade, specifications, dimensions and temperature\u2011resistance properties match the design documents. Inspect the overall condition: filter media free of damage, paper separators free of deformation, glue joints free of cracking and metal frames free of dents and impacts. Second, clean the installation surfaces. Thoroughly remove dust and debris inside supply\u2011air ceilings and air supply outlets to keep the installation area clean, preventing contaminants from entering the filter during installation. Prepare special sealant, mounting clips and leak\u2011detection tools to ensure full availability of construction accessories. For special high\u2011temperature or high\u2011humidity working conditions, double\u2011check filter compatibility in advance. Standard\u2011grade filters shall never be applied under special operating conditions.<\/p>\n

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The standardized installation workflow consists of four major steps: positioning, fastening, sealing and calibration. Step 1: Precise positioning. Gently insert the filter into the mounting groove of air supply outlet or clean ceiling. Adjust its position to ensure the frame is level and plumb, with uniform contact along four sides and no offset or tilt. Step 2: Fastening. Secure the filter with dedicated mounting clips with moderate clamping force. Excessive pressure shall be avoided to prevent frame deformation and filter\u2011media damage. The filter shall remain firm without shaking after fastening. Step 3: Sealing, the core procedure to eliminate air leakage. For general\u2011condition applications, apply continuous neutral sealant evenly along frame gaps with no breaks or bubbles. For high\u2011grade cleanrooms, adopt dual\u2011sealing with sealing gaskets for enhanced air tightness. Step 4: Overall calibration. Re\u2011check installation flatness, sealing integrity and duct accessibility. Ensure filter media is free of compression or obstruction for unobstructed airflow.<\/p>\n

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The core principle of sealing technology is to eliminate hidden air\u2011leak risks. Special attention shall be paid to leak\u2011prone zones including four corners, frame joints and glue\u2011seam interfaces. Prior to gluing, gaps must be dry and free of dust and grease to achieve tight adhesion. Apply sealant at a steady rate with consistent thickness to avoid discontinuous or hollow glue layers. Do not touch or move filters before sealant is fully cured; proceed with subsequent work only after complete curing. For bulk\u2011installed filters, maintain uniform spacing and overall flatness without height offset to guarantee even air distribution.<\/p>\n

Professional leak\u2011test acceptance shall be performed upon installation completion. PAO aerosol leak\u2011testing is the industry\u2011standard acceptance method for HEPA filters in cleanrooms. An aerosol generator delivers uniform aerosol into the air\u2011supply system. A photometer scanner surveys filter frames, glue seams and filter\u2011media surfaces. Acceptance criteria: zero leakage points and no excessive aerosol concentration detected. Initial filter resistance and supply\u2011air cleanliness shall also be tested. The measured resistance shall comply with rated technical parameters; 0.3\u202f\u03bcm particle concentration at air outlet shall meet specifications with no dead\u2011flow zones. Formal commissioning is permitted only after all test items pass acceptance.<\/p>\n

Standardized installation and sealing processes completely eliminate terminal\u2011filtration air leakage, enable 100\u2011percent utilization of paper\u2011separated HEPA filter performance, stabilize clean\u2011room conditions and reduce later\u2011stage O&M rectification costs. These procedures constitute critical links within clean\u2011room construction.<\/p>","protected":false},"excerpt":{"rendered":"

As core terminal filtration equipment for cleanrooms, the installation quality and sealing performance of paper\u2011separated HEPA filters directly determine whether the air cleanliness of clean workshops meets requirements. Air leakage, installation offset and poor sealing are common quality defects in purification projects. To give full play to filter performance and standardize construction procedures, this article elaborates on the installation procedures, sealing processes and leak\u2011test acceptance specifications for paper\u2011separated HEPA filters in reference to cleanroom construction\u2011acceptance standards, providing technical support for standardized purification\u2011project construction.<\/p>","protected":false},"author":3,"featured_media":5959,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5958","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/comments?post=5958"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5958\/revisions"}],"predecessor-version":[{"id":5962,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/posts\/5958\/revisions\/5962"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/media\/5959"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/media?parent=5958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/categories?post=5958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/fr\/wp-json\/wp\/v2\/tags?post=5958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}