Maintenance criteria for high-efficiency air supply ceiling filters (including pre-filter), applicable on-site and easy to use
\nI. Core point: Check the pressure difference (priority, based on national standards)
\n1. High-efficiency filters (end H13\/H14)
\nInitial resistance at factory: 220-250 Pa
\nTrigger for replacement: Measured resistance \u2265 2 times initial resistance
\nExample: Initial resistance 250 Pa \u2192 Must replace when it reaches 500 Pa
\nDaily control: Continuous rapid increase in pressure difference (short-term surge) \u2192 Pre-filter failure, conduct early investigation
\n2. Medium-efficiency filters (F8\/F9)
\nInitial resistance: 80-120 Pa
\nReplacement: Resistance exceeds 1.8 times initial resistance \/ Pressure difference gauge reaches full scale, air volume decreases
\n3. Primary-efficiency filters (G4)
\nRecoverable type: Dirty blockage, blackening, pressure difference rises \u2192 Clean 2-3 times and then directly scrap and replace
\nOne-time type: Significant increase in pressure difference \/ Severe visible dust accumulation directly replace
\nII. Check detection data (GMP \/ Cleanroom must check)
\nPAO leak detection fails: frame leakage, filter material leakage. No matter what the pressure difference is, replace immediately
\nRoom cleanliness not up to standard\uff0c particle count exceeds limit\uff0c after excluding other leakage points\uff0c directly replace the end high-efficiency filter
\nOutlet air speed significantly low\uff0c no wind locally \/ Outflow skewed\uff0c filter material severely clogged
\nIII. Check usage period (mandatory replacement to prevent hidden failure)
\nConventional clean environment (pharmaceutical \/ electronics \/ aseptic)\uff1a
\nPrimary efficiency\uff1a 3-6 months (cleaning \/ replacement)
\nMedium efficiency\uff1a 6-12 months must replace
\nHigh efficiency\uff1a Mandatory replacement after 2 years (even if pressure difference does not reach\uff0c it is recommended to replace to prevent aging\uff0c delamination\uff0c and glass fiber falling off)
\nHigh dust\uff0c high humidity\uff0c frequent disinfection and fumigation environment\uff1a All cycles are shortened by 30%-50%
\nIV. Visual inspection + on-site intuitive judgment (inspection can be done during patrol)
\nOutlet panel\uff0c uniform flow membrane blackened\uff0c obvious dust accumulation
\nAir supply has odor\uff0c dust sensation\uff0c still has dirty traces after disinfection
\nFilter frame sealing glue cracked\uff0c de-gummed\uff0c damp and moldy
\nFan frequency is very high\uff0c but air volume still cannot be increased<\/p>","protected":false},"excerpt":{"rendered":"
Maintenance criteria for high-efficiency air supply ceiling filters (including pre-filter), applicable on-site and easy to use I. Core point: Check the pressure difference (priority, based on national standards) 1. High-efficiency filters (end H13\/H14) Initial resistance at factory: 220-250 Pa Trigger for replacement: Measured resistance \u2265 2 times initial resistance Example: Initial resistance 250 Pa \u2192 […]<\/p>","protected":false},"author":3,"featured_media":5032,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5259","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts\/5259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/comments?post=5259"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts\/5259\/revisions"}],"predecessor-version":[{"id":5260,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts\/5259\/revisions\/5260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/media\/5032"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/media?parent=5259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/categories?post=5259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/tags?post=5259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}