Installation and operation process of clean room FFU + full acceptance inspection steps
\nThe overall process is divided into four major stages: installation appearance acceptance \u2192 electrical system acceptance \u2192 single machine performance test acceptance \u2192 comprehensive performance acceptance of the clean room. All must be qualified before it can be handed over for use, in accordance with standards GB51110-2015, GB\/T36068, and GB\/T13554.
\nThe first stage: preliminary installation appearance and structure acceptance (after the installation of the ceiling truss \/ keel \/ FFU is completed)
\nData verification acceptance
\nVerify the drawings, FFU factory certificate of conformity, high-efficiency filter test report, motor parameters, spare parts list;
\nVerify the model, size, air volume, EC\/AC motor, and the design of the group control system are consistent.
\nCeiling keel structure acceptance
\nThe hangers, main \/ secondary keels have no deformation, are firmly welded, and the hanger spacing is \u2264 1.2m;
\nThe levelness of the keels is detected with a level \u2264 2mm\/m, the overall flatness \u2264 5mm;
\nConfirm that the ceiling load meets the FFU load, and there is no loosening or sagging.
\nFFU arrangement and installation appearance acceptance
\nThe outflow surface of the FFU is uniformly downward, the arrangement is aligned, the positioning deviation is \u2264 \u00b15mm;
\nThe sealing rubber strips between the FFU and the keels are complete and continuous, without gaps, fractures, or uneven compression;
\nThe fixing bolts are evenly locked diagonally, the box body is not squeezed or deformed, there are no missing or insufficient bolts;
\nThe joint of the FFU has no obvious gap, no debris, or loose wire ends left on the sealing surface;
\nThe FFU box body has no scratches, peeling, rusting, and the outflow surface of the FFU is not deformed.
\nHigh-efficiency filter installation acceptance
\nThe filter core is without damage, leakage, or moisture, and is installed only with the frame under force;
\nThe filter and the FFU static pressure box are closely adhered, without warping, gaps;
\nBefore commissioning, the filter core is completely covered with dust-proof protection film.
\nThe second stage: special acceptance inspection of the electrical control system (first detect in power-off state)
\nPower distribution circuit acceptance
\nThe FFU has an independent power supply circuit, and a matching leakage protection device is configured;
\nThe wiring is neat, strong and weak electrical lines are separated, and there is no squeezing at the air outlet.
\nGrounding and insulation acceptance
\nThe insulation resistance to ground of the entire machine tested with a 500V multimeter is \u2265 1M\u03a9;
\nThe equipment shell is reliably grounded, and the grounding resistance is \u2264 4\u03a9.
\nConnection and control acceptance
\nThere is no wrong connection of zero, live, and ground wires, the connection terminals are tightened without loosening;
\nThe group control FFU address code is unique without repetition, and the control panel indicator lights are normal;
\nThe speed regulation function (0\u201310V \/ multi-level) is adjusted smoothly, without runaway or tripping.
\nPower-on no-load test acceptance
\nTest each unit one by one, the fan has no abnormal vibration, noise, or burnt smell;
\nThe speed of each gear is stable, without sudden speed changes, and there is no overheating phenomenon.
\nThe third stage: FFU single-machine performance acceptance (after removing all protective films)
\nWind speed uniformity acceptance (five-point method)
\nTake four corners + five central measurement points at the outlet, the reference wind speed is 0.45m\/s;
\nThe deviation of the single fan’s wind speed is \u2264 \u00b110%, the difference in wind speed of all FFUs in the same area is \u2264 15%.
\nNoise detection acceptance
\nMeasurement points: 1m away from the FFU, 1.2m above the ground, noise \u2264 65dB (A).
\nPAO aerosol leak detection (core main control item, non-compliant shall not be put into production)
\nUpstream smoke emission, the aerosol concentration meets the standard;
\nThe scanning probe is 2\u20133cm away from the filter surface, the moving speed is \u2264 5cm\/s;
\nKey scanning: filter paper surface, filter rubber strip, FFU frame, keel joint;
\nJudgment criteria: penetration rate \u2264 0.01% is qualified;
\nLeakage point handling: repress the seal \/ replace the rubber strip \/ replace the filter, retest until qualified.
\nFan operation stability acceptance
\nContinuous single machine operation for 2 hours, no shutdown, no overheating, no significant attenuation of air volume.
\nThe fourth stage: overall system comprehensive acceptance of the clean room (all FFUs are simultaneously turned on)
\nSystem pre-cleaning acceptance All FFUs are turned on. After the continuous self-purification of the sealed clean room for 24 hours, the detection can be carried out;
\nDaily usage acceptance: The detection can be conducted only after the self-purification for 15-30 minutes after the machine is turned on.
\nAir flow pattern test acceptance
\nSmoke test: The working area is vertical laminar flow, without vortex, dead corners, or turbulent flow;
\nThere is no obvious air short-circuit at the edges of the shed and around the equipment.
\nIndoor pressure difference acceptance
\nThe clean room maintains a positive pressure of 5-10 Pa relative to the non-clean area, and the pressure difference remains stable without dropping after the door is closed.
\nAir cleanliness particle acceptance
\nTest according to the design level (ISO 5\/6\/7 grades) for \u22650.5 \u03bcm and \u22655 \u03bcm dust particles;
\nThe static particle concentration meets the requirements of the national standard GB\/T 36066 and is qualified.
\nTemperature and humidity acceptance
\nTemperature 18-26\u2103, relative humidity 40%-65% RH, with stable fluctuations.
\nFalling bacteria \/ airborne bacteria acceptance (required for pharmaceutical and food dust-free sheds)
\nPlace the settling plate statically, and the number of colonies after cultivation meets the GMP clean room grade requirements.
\nPhase 5: Operation process, documents, and completion acceptance
\nOperation and shutdown standard process practical acceptance
\nAssess the operators: The operation process of turning on, adjusting speed, shutting down, and handling abnormal situations is standardized;
\nVerify the feasibility of emergency handling processes such as power failure and fan failure.
\nMaintenance support acceptance
\nAll pressure monitoring points for primary and secondary filters are complete;
\nEquipped with wind speed meters, particle counters, PAO leak detection instruments, etc. for detection tools;
\nThe FFU operation inspection record sheet is posted on site.
\nCompletion documents transfer acceptance
\nCompletion drawings, equipment qualification certificates, filter test reports;
\nComplete sets of original records for wind speed, leak detection, particles, and pressure difference detection;
\nFFU operation and maintenance manual, electrical wiring diagram.
\nAcceptance qualification rules (mandatory requirements of GB51110)
\nThe main control items (sealing leak detection, insulation, cleanliness, and pressure difference) must be 100% qualified. If any one item is unqualified, the overall acceptance will not pass.
\nGeneral items such as appearance\uff0c arrangement\uff0c and noise are qualified at a rate of \u226580%\uff1b
\nAfter all items are met\uff0c sign the “Cleanroom FFU Installation Completion Acceptance Form”\uff0c and the cleanroom can be delivered for production use.<\/p>","protected":false},"excerpt":{"rendered":"
Installation and operation process of clean room FFU + full acceptance inspection steps The overall process is divided into four major stages: installation appearance acceptance \u2192 electrical system acceptance \u2192 single machine performance test acceptance \u2192 comprehensive performance acceptance of the clean room. All must be qualified before it can be handed over for use, […]<\/p>","protected":false},"author":12,"featured_media":5618,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5617","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\/5617","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/comments?post=5617"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts\/5617\/revisions"}],"predecessor-version":[{"id":5620,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/posts\/5617\/revisions\/5620"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/media\/5618"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/media?parent=5617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/categories?post=5617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/es\/wp-json\/wp\/v2\/tags?post=5617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}