Danfoss TTS400

page54.
3. DisconnecttheSCRtemperaturesensorcableplug(INTER-J17)fromtheBackplaneBoard.
Figure 4-146 J17 Connector
4. Usingamultimetersetforresistancemeasurements,placetheleadsinterminal1and2ofthecable
plug.RefertoFigure4-146J17Connector.Thevalueshouldcorrespondwithanegativetemperature
coefficient(NTC)thermistor10KΩ@70°F(21°C).RefertoFigure4-273Temperaturevs.Resistanceon
page246.
4.18.2.6 SCR Temperature Sensor General Removal
NOTE
TheSCRTemperatureSensorisNOTintherefrigerantcircuitanddoesnotrequirerefrigerantrecovery.
1. Isolatethecompressorpowerasdescribed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. ContinuetoSection4.18.2.7SCRTemperatureSensorRemoval-TTS300/TGS230forTT300/TG230
compressorsandforallotherTT/TGcompressors,continuetoSection4.18.2.8SCRTemperatureSensor
Removal-TTS/TGS/TTH/TGHRev.FandEarlier(ExceptTTS300/TGS230)onpage146.
4.18.2.7 SCR Temperature Sensor Removal - TTS300/TGS230
1. DisconnectcompressorcontrollercablefromtheDischargeP/Tsensorandmovethecableasideto
accesstheSCRtemperaturesensor.RefertoFigure4-147SCRTemperatureSensorlocation-
TTS300/TGS230.
Figure 4-147 SCR Temperature Sensor location - TTS300/TGS230
2. RemovetheMainVoltageInputTerminalBlock.RefertoSection4.11.2.2Specific3-PhaseMainVoltage
InputTerminalBlockRemoval-TTS300/TGS230onpage102.
3. DisconnecttheSCRTemperatureSensorfromtheCompressorControllerHarnessandgentlypullthe
sensorcableundertheSCRCoolingManifoldfromthedischargesideofthecompressor.Referto
Figure4-148SCRTemperatureSensorConnector-TTS300/TGS230onpage146.
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