Explosion-proof FFU Filter Replacement Judgment Method (Practical Version, General for Explosion-proof Clean Rooms)
\nCore Principle: Prioritize checking the pressure difference, followed by time, air flow, and environment. It is strictly prohibited to operate with the filter blocked in explosion-proof environments.
\n1. The Most Standard Method: Pressure Difference Method (Most Accurate, Must Be Used)
\nFFU comes with a pressure difference gauge \/ external pressure difference meter. Measure the pressure difference before and after the filter.
\nInitial resistance of new high-efficiency filter: 120\u2013180 Pa
\nWhen the pressure difference reaches 300\u2013350 Pa \u2192 Must be replaced
\nIn lithium battery, chemical explosion-proof workshops, it is recommended to replace when the pressure difference reaches 280 Pa to prevent overload and overheating of the motor and the generation of ignition sources (Key points of explosion-proof)
\nIn explosion-proof areas, it is strictly prohibited to have severe blockage of the filter, increased motor load, and excessive temperature rise, as there is an explosion risk.
\n2. Time Period Method (Reference when there is no pressure difference gauge)
\nGeneral explosion-proof clean area: 6 months
\nLithium battery, electrolyte, solvent, dust environment: 3 months
\nContinuous 24-hour operation: 2\u20133 months
\n3. Intuitive Visual + Operating State Judgment
\nThe air outlet becomes smaller, the wind speed significantly decreases, and the air volume at the same position weakens
\nThe fan noise becomes louder, the vibration becomes greater, and the motor gets hot (Key points to be vigilant in explosion-proof environments)
\nThe number of particles in the clean room increases, and the cleanliness does not meet the standard
\nThe filter surface turns black, there is a lot of accumulated dust, there is oil contamination, electrolyte crystallization, and dust clumping
\n4. Special Attention Points in Explosion-proof Environments
\nAfter the filter adsorbs electrolyte, alcohol, and flammable dust, it is already a combustible substance. Even if the pressure difference has not reached the limit, it must be replaced in advance.
\nWhen replacing, power must be disconnected. It is strictly prohibited to open the cover while powered on. After replacement, lock the explosion-proof cover plate and sealing parts.
\nThe old filter material removed belongs to hazardous waste and cannot be discarded casually. It should be treated as flammable and explosive waste.<\/p>","protected":false},"excerpt":{"rendered":"
Explosion-proof FFU Filter Replacement Judgment Method (Practical Version, General for Explosion-proof Clean Rooms) Core Principle: Prioritize checking the pressure difference, followed by time, air flow, and environment. It is strictly prohibited to operate with the filter blocked in explosion-proof environments. 1. The Most Standard Method: Pressure Difference Method (Most Accurate, Must Be Used) FFU comes […]<\/p>","protected":false},"author":3,"featured_media":5393,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/comments?post=5405"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5405\/revisions"}],"predecessor-version":[{"id":5406,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5405\/revisions\/5406"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media\/5393"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media?parent=5405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/categories?post=5405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/tags?post=5405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}