Danfoss TTS350 - Inverter Card Replacement; Inverter Card Removal

10. ConnectthecompressorcableharnesstotheIGVMotorfeedthrough,suctionanddischargesensors,
andSCRTemperaturesensor.
11. RotatetheRetainerClipuntilitisdirectlyabovetheIGVConnectorandtorquetheM5x16IGV
FeedthroughFastenerto25Nm(18ft.lb.).
12. InstalltheDCBusBarandCapacitorassemblyandSnubberCapacitors.RefertoSection4.21.3DC
CapacitorBusBarAssemblyRemovalandInstallationonpage168.
13. InstalltheTerminalBlockAssembly.RefertoSection4.11.23-PhaseMainVoltageInputTerminalBlock
RemovalandInstallationonpage102.
14. Connectthethree(3)ACwiresfromtheSoftStartAC/DCcableharnesstotheappropriateACbusbar.
Inverter General Installation
1. ConnecttheMotorSensorwires.
2. ConnecttheSCRGatecableharnesstotheSCRsnotingitsorientation.RefertoSection4.16.2SoftStart
SCRGateCableRemovalandInstallationonpage128.
3. ConnecttheInvertercableharnesstothetopoftheInverter.
4. InstallthemainsinputcablestotheTerminalBlockandtorqueto21Nm(15ft.lb.).
5. InstalltheSoftStart.RefertoSection4.14.3SoftStartRemovalandInstallationonpage117.
6. Installthetopcovers.ReferSectionto4.1CompressorCoversonpage52.
7. Returnthecompressortonormaloperation.
4.22.7 Inverter Card Replacement
ThissectiondetailsthestepstoremoveandinstalltheInverterControlCard.IftheInverterprovestobeworking
properlyandtheInverterControlCardhasbeenconfirmedtohavefailed,followtheremovalandinstallationsteps
fortheInverterControlCard.
ThereplacementInverterControlCardsareonlyforthe613Inverter.RefertoBulletinB-CN-107-ENRevBforfurther
detailsregardingtheapplicabilityofthecontrolcards.
4.22.7.1 Inverter Card Removal
1. IsolatecompressorpowerasdescribedinSection1.8ElectricalIsolationonpage22.
2. RemovetheSoftStart.RefertoSection4.14.3SoftStartRemovalandInstallationonpage117.
3. IfusingtheInvertertester-RemovetheDCCapacitorandBusAssembly.RefertoSection4.21.3DC
CapacitorBusBarAssemblyRemovalandInstallationonpage168.
NOTE
Theabovestepisonlynecessarywhenusingtheinvertertester.
4. DisconnecttheribboncablefromtheInverter.
• • • CAUTION • • •
DonotremovethefastenersthatsecuretheInvertertothecompressormainhousing.

5. Removethesix(6)DriverBoardfastenersusingaT15Torxbit.Beginontheoutsideandworktowards
thecenter.RefertoFigure4-210DriverBoardFastenersonpage189.

Page 188 of 294 - M-SV-001-EN Rev. H 1/23/2023