Danfoss Turbocor TT Series

4.9.2 IGV Verification
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4.9.2.1 IGV Stepper Motor Verification
1. Isolatecompressorpower.
2. DisconnecttheIGVMotorCablefromthesuctionpressure/temperaturesensorandtheIGVMotor
powerfeedthrough.RefertoFigure4-43IGVMotorFeedthroughforthisandthefollowingstep.
3. Measuretheresistancebetweenterminals1-2,and3-4oftheIGVMotorfeedthrough.Themeasured
valueshouldbebetween46Ωand59Ω.
4. MeasuretheresistancebetweentheIGVMotorfeedthroughterminalsandtheIGVHousing.The
measuredvalueshouldbeopenorinfinity.
Figure 4-43 IGV Motor Feedthrough
4.9.2.2 IGV Operation Verification
SomeofthestepscontainedwithinthissectionrequiretheuseoftheSMT.RefertotheServiceMonitoringTool
ManualregardingtheproperusageoftheSMT.
1. RemovetheServiceSideCover.RefertoSection4.1.3.1ServiceSideCoverRemovalandInstallationon
page54.
2. OpentheSMTinstalledonyourcomputerandconnecttothecompressor.RefertoFigure4-44SMT
Icon.
Figure 4-44 SMT Icon
3. OpentheCompressor Configurationtool.RefertoFigure4-45CompressorConfigurationTool.
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Figure 4-45 Compressor Configuration Tool
4. SettheCompressorControlModeto Manual ControlbyselectingManual Controlfromthe
CompressorControlModedrop-downlist.RefertoFigure4-46ControlModeonpage84.
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