Atlas Copco 3900062921 Air Filter Maintenance Indicator

The Atlas Copco air filter maintenance indicator part number 3900062921 operates as a precision monitoring component for industrial screw air compressors. It works in the intake system and continuously tracks air filter condition by measuring differential pressure across the filter element. In addition, it provides a clear visual warning when filter restriction reaches the preset threshold, so operators can maintain stable compressor performance and protect critical internal components. Contents1 Product Overview2 Key Features3 Working Principle4 Technical Specifications5 Equipment Compatibility & Applications5.1 Compatible Compressor Systems5.2 Industrial Applications6 Maintenance and Safety Guidelines7 Key Features Summary8 FAQ8.1 Q1: Is the Atlas Copco 3900062921 a genuine original component?8.2 Q2: How often should operators inspect the indicator during operation?8.3 Q3: Does the indicator require replacement when the air filter is changed?8.4 Q4: What happens if operators ignore a clogged filter condition?8.5 Q5: Can a faulty indicator affect compressor operation?9 Procurement & Technical Support10 More Kits List11 Inquiry Now Product Overview Firstly, during compressor operation, ambient air carrying dust and airborne particles enters the intake filtration system. Over time, the air filter element collects these particles and gradually increases airflow resistance. As a result, system efficiency may decrease if operators delay maintenance. Meanwhile, the 3900062921 maintenance indicator monitors the pressure differential across the air filter in real time. When the resistance reaches the preset limit, the indicator triggers an immediate visual alert. Therefore, operators can respond quickly and perform maintenance before the airflow becomes critically restricted. Atlas Copco Air Filter Maintenance Indicator 3900062921 (1) Key Features Real-time monitoring: The indicator continuously detects changes in pressure differential across the air filter element. Visual maintenance alert: The system shows a clear color signal when filter restriction exceeds the recommended level. System protection: The indicator helps prevent excessive intake resistance and supports stable compressor operation. Stable mechanical structure: The design operates without external power and ensures reliable performance in industrial environments. Working Principle Firstly, the indicator uses a mechanical differential pressure sensing mechanism to monitor airflow conditions. As the air filter captures dust and particles, the pressure drop between the clean side and the dirty side increases gradually. Then, when this pressure difference reaches a predefined threshold, the internal mechanism activates the indicator window. The display changes from a normal condition (green) to a restriction alert condition (red). Consequently, operators can quickly identify the need for air filter replacement or cleaning before system performance declines. Technical Specifications In order to support technical verification, the table below summarizes the key specifications of the Atlas Copco 3900062921 air filter maintenance indicator. Parameter Specification Part Number 3900062921 Product Type Air Filter Maintenance Indicator / Differential Pressure Indicator Function Air filter restriction monitoring and visual alert Operating Principle Mechanical differential pressure sensing Material Structure Reinforced industrial polymer, aluminum base, oil-resistant sealing components Application Status Standard compressor intake system component Equipment Compatibility & Applications Compatible Compressor Systems Firstly, Atlas Copco designs this indicator for industrial screw air compressor intake systems, including GA, GX, and GR series configurations. Additionally, technicians may install it in selected compressor platforms with compatible intake assembly structures, depending on system design. Industrial Applications Automotive manufacturing: The indicator supports stable compressed air supply for production lines and paint systems. Heavy industry and mining: The system operates reliably in high-dust environments with continuous load requirements. Food and pharmaceutical production: The indicator helps maintain proper filtration performance for clean air systems. Energy and chemical processing: The component supports stable compressor operation under continuous working conditions. Maintenance and Safety Guidelines Important operational notice: When the indicator shows a high restriction warning, operators should inspect and maintain the air filter system immediately. If the compressor continues operating under excessive intake resistance, system efficiency will decrease significantly. In severe cases, the air filter element may deform or fail, and then contaminants may enter the compression stage. As a result, internal components may experience accelerated wear and reduced service life. Key Features Summary The indicator continuously monitors differential pressure in the intake filtration system. The system provides a mechanical visual alert without external power supply. The design supports preventive maintenance strategies for compressors. The indicator helps reduce unnecessary energy consumption caused by clogged filters. The product maintains stable performance under industrial operating conditions. FAQ Q1: Is the Atlas Copco 3900062921 a genuine original component? Yes. The 3900062921 is a genuine Atlas Copco-designed standard component for compatible compressor intake systems. It ensures accurate differential pressure monitoring and stable system integration. Q2: How often should operators inspect the indicator during operation? Operators should inspect the indicator during daily routine checks. In addition, they should verify the installation point regularly to ensure that no air leakage or loose connection occurs. Q3: Does the indicator require replacement when the air filter is changed? No, operators do not need to replace the indicator during routine filter maintenance. After installing a new air filter, the indicator typically returns to its normal position once airflow stabilizes. However, technicians should replace the unit if it fails to respond correctly. Q4: What happens if operators ignore a clogged filter condition? If operators ignore a clogged filter, the compressor will run under increased intake resistance. As a result, energy consumption will rise and system efficiency will drop. Over time, this condition may also increase wear on internal compressor components. Q5: Can a faulty indicator affect compressor operation? Yes, indirectly. If the indicator fails to signal a clogged filter, maintenance may be delayed. Consequently, the compressor may continue operating under poor airflow conditions, which increases energy use and reduces system efficiency. Atlas Copco Air Filter Maintenance Indicator 3900062921 (2) Procurement & Technical Support For technical documentation, compatibility confirmation, or procurement support for part number 3900062921, please contact the technical support team. The team will assist you in verifying system compatibility and selecting the correct component for your compressor configuration. More Kits List If you need other Atlas Copco kits, we provide more models in the table below or you can submit your requirements to us directly. Part Number Part Name Part-Number 9771001264 FILTER ELEMENT C-250-85/G4(AC 9771-0012-64 9771001265 FILTER ELEMENT 9771-0012-65 9771001266 FILTER ELEMENT C-250-85(AC) 9771-0012-66 9771001267 FILTER ELEMENT C-360-85/G4(AC 9771-0012-67 9771001268 FILTER ELEMENT 9771-0012-68 9771001269 FILTER ELEMENT C-360-85(AC) 9771-0012-69 9771001271 FILTER ELEMENT 9771-0012-71 9771081115 CF1840 safety air filter ele. 9771-0811-15 9771096134 ELM 12 010 INTAKE FILTER 9771-0961-34 9771096142 2901052400 PREFILTER 9771-0961-42 9771096150 4107400000 PREFILTER 9771-0961-50 9771096230 4107400104 AIR FILTER ELEMENT 9771-0962-30 2202260512 AIR FILTER SUPPORT 30-40 2202-2605-12 2202260554 FILTERING ELEMENTS CSC 2202-2605-54 2202260686 FILTER PIPE DRYER RDRY10-15 BY 2202-2606-86 2202260700 FILTER ELEMENT IVR 2202-2607-00 2202261128 FILTER ELEMENT CSA-IVR 2202-2611-28 2202715000 AIR FILTER EL.FILTRANTE 2202-7150-00 2202719400 SPACER OIL FILTER CSD 2202-7194-00 2202756901 FILTER DRYER 30GR 2WAYS D6/3 2202-7569-01 2202756902 FILTER DRYER 10GR 2WAYS D6/2.5 2202-7569-02 2202756903 FILTER DRYER 30GR 2WAYS D6/2,5 2202-7569-03 2202756904 FILTER DRYER 30GR 3WAYS D6/2,5 2202-7569-04 2202781100 AIR FILTER CSC100 2202-7811-00 2202789801 FILTER DRYER DRWG 2202789800 2202-7898-01 2202818401 FILTER DRYER LIQUID DML 164 2202-8184-01 2202818402 FILTER DRYER LIQUID DML 306 2202-8184-02 2202840000 STIRRUP FILTER DRYERS A18-19 2202-8400-00 2202896601 PIPE AIR OUTLET D.22 FILTERS O 2202-8966-01 2202899000 STIRRUP FILTER V400 2202-8990-00 2202899100 STIRRUP FILTER GA15 V400 2202-8991-00 2202902700 STIRRUP PD/DD 32 FILTERS 2202-9027-00 2202910400 FILTER ASSY 0106 2202-9104-00 2202919200 AIR FILTER ASSY GA15 VSD 2202-9192-00 2202920200 FILTER AIR HEAVY DUTY RLRC77 2202-9202-00 2202925600 FILTER HOUSING BP G 2202-9256-00 2202928701 NIPPLE OIL FILTER G3/4-M23X1LH 2202-9287-01 2202928702 NIPPLE OIL FILTER G3/4-M22X1,5 2202-9287-02 2202929550 OIL FILTER 4000H PACKED 2202-9295-50 2202929650 OIL FILTER 8000H PACKED 2202-9296-50 2202932901 FILTER EMC 28A 480/275VAC 2202-9329-01 2202932911 FILTER EMC 40A 480/275VAC 2202-9329-11 Inquiry Now Contact Form DemoΔ Your NameLast NameYour EmailCountrySelect CountryAfghanistanAland IslandsAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Saint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCook IslandsCosta RicaCroatiaCubaCuraçaoCyprusCzech RepublicDemocratic Republic of the Congo (Kinshasa)DenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyIvory CoastJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKosovoKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacao S.A.R., ChinaMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth KoreaNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPalestinian TerritoryPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalPuerto RicoQatarRepublic of the Congo (Brazzaville)RomaniaRussiaRwandaRéunionSaint BarthélemySaint HelenaSaint Kitts and NevisSaint LuciaSaint Martin (Dutch part)Saint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia/Sandwich IslandsSouth KoreaSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkmenistanTurks and Caicos IslandsTuvaluTürkiyeUgandaUkraineUnited Arab EmiratesUnited Kingdom (UK)United States (US)United States (US) Minor Outlying IslandsUnited States (US) Virgin IslandsUruguayUzbekistanVanuatuVaticanVenezuelaVietnamWallis and FutunaWestern SaharaYemenZambiaZimbabweSubjectYour MessageSend Inquiry