Danfoss TTS350 - Inverter Cable Harness Torque Specifications; Inverter Removal and Installation; Compressor Specific Inverter Removal Steps - TTS300;TGS230

3. Usingminimalforce,pushinontheInverterCableHarnessconnector.Whiledoingthis,thelatches
shouldfoldinoncethecableconnectorhasreachedtheproperdepth.
4. UsethesameprocesstoconnecttheInverterCableHarnesstotheBackplaneJ6connection.
5. InstallthegroundconnectoroftheInverterCableHarnesstotheBackplane.TorquetheM5x10fastener
to3Nm(26.5in.lb.).
6. Installnewcabletiesasnecessary.
7. InstalltheSoftStart.RefertoSection4.14.3SoftStartRemovalandInstallationonpage117.
8. InstalltheServiceSideCover.RefertoSection4.1.3.1ServiceSideCoverRemovalandInstallationon
page54.
9. Installthetopcovers.4.1CompressorCoversonpage52.
10. Returnthecompressortonormaloperation.
4.22.5 Inverter Cable Harness Torque Specifications

Table 4-34 Inverter Cable Harness Torque Specifications
Description Nm Ft.Lb. In.Lb.
BackplaneGroundfastener,M5x10 3 - 26.5
SoftStartMountingfastener,M5X15 5 - 44
CoverFastener,M5x15 1.5 - 13

4.22.6 Inverter Removal and Installation

General Removal
1. IsolatecompressorpowerasdescribedinSection1.8ElectricalIsolationonpage22.
2. Isolatethecompressorandrecovertherefrigerantaccordingtoindustrystandards.RefertoSection3.1
RefrigerantContainmentonpage41.
3. DisconnectthemainsinputwiresfromtheTerminalBlock.
4. RemovetheSoftStart.RefertoSection4.14.3SoftStartRemovalandInstallationonpage117.
5. ForTT300/TG230compressorscontinuetoSection4.22.6.1CompressorSpecificInverterRemovalSteps
-TTS300/TGS230,forallotherTT/TG/TTHcompressors,continuetoSection4.22.6InverterRemovaland
Installationonpage179.

4.22.6.1 Compressor Specific Inverter Removal Steps - TTS300/TGS230
1. Disconnectthetwo(2)SCRGateconnectorsfromeachrectifier.
2. RemovetheFuseBlockAssembliesandTerminalBlockfromthecompressor.RefertoSection4.11.23-
PhaseMainVoltageInputTerminalBlockRemovalandInstallationonpage102.
3. RemoveSnubberCapacitorsandDCBusAssembly.RefertoSection4.21.4.1DCCapacitorBusBar
AssemblyRemoval-TTS300/TGS230onpage168.
4. RemovetheM8x70MotorBusBarfastenersfromtheInverter.RefertoFigure4-195InverterCopper
TubeRemovalonpage180andthenotebelow.
NOTE
ItisnotnecessarytocompletelyremovetheMotorBusBars.
5. Slideoutallthree(3)InverterCopperTubes.

M-SV-001-EN Rev. H-1/23/2023 Page 179 of 294