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1、MAKINGMODERNLIVINGPOSSIBLESightglasses-SG+,typeSGM+,SGN+,SGI+andSGRM+,SGRN+,SGRI+TechnicalbrochureTechnicalbrochureSightglasses-SG+,typeSGM+,SGN+,SGI+andSGRM+,SGRN+,SGRI+IntroductionSightglassesareusedtoindicate:TheSGM+andSGRM+aremainlyusedtoindicatetheconditionoftherefrigerantaswe
2、ll1.Theconditionoftherefrigerantinastheliquidlevelinthereceiverortheoillevelintheliquidlineoftheplant.thecompressor.2.TheflowintheoilreturnlinefromTheSGI+/N+andSGRI+/N+areequippedtheoilseparator.withsensitiveindicatorsthatreflectsacolour,dependingonthemoisturecontentinthe3.Themoist
3、urecontentintherefrigerant.refrigerant.ApprovalsAvailabletypesSGM+:SGRM+:WithoutmoistureSockettypewithoutSolderversionindicatormoistureindicatorSocketFlareversionSGI+:SGRI+:WithCFC/HCFCSaddlesightglassSolderversionmoistureindicatorwithCFC/HCFCSGN+:moistureindicatorSocketWithHCFC/HF
4、CSGRN+:moistureindicatorSaddlesightglassFlareversionwithHCFC/HFCmoistureindicatorSaddleFeaturesTypeSGM+/SGRM+ForCFC/HCFC/HFCTypeSGN+/SGRN+IndicateslackofsubcoolingForHCFC/HFCrefrigerantsIndicatesrefrigerantdeficiencyIndicatestoohighwatercontentintherefrigerationsystemIndicatesliqui
5、dlevelinreceiverIndicateslackofsubcoolingIndicatesoillevelincompressorIndicatesrefrigerantdeficiencyFlare/solderconnectionorsockettypeFlare/solderconnectionorsockettypeTypeSGI+/SGRI+ForCFCandHCFCrefrigerantsIndicatestoohighwatercontentintherefrigerationsystemIndicateslackofsubcooli
6、ngIndicatesrefrigerantdeficiencyFlare/solderconnectionorsockettype2DKRCC.PD.EK0.B2.02/520H2659©DanfossA/S(AC-AKC/frz),11-2009TechnicalbrochureSightglasses-SG+,typeSGM+,SGN+,SGI+andSGRM+,SGRN+,SGRI+ChoiceofsightglassBeforechoosingasightglasswithmoistureThecoloronthesightglassindicat
7、ordependsonindicator,thefollowingshouldbeconsidered:themoisturecontentoftherefrigerant.–typeofrefrigerant–watersolubilityofrefrigerantThevaluesunder“green/dry”aretobeconsidered–thelevelonwhichadangersignalisasperfectconditionmeaningfullprotectionrequired.againstharmfuleffectsfrommo
8、isture.Inotherwords,thefil
