Danfoss TTS400 User Manual

3. RemovetheSnubberCapacitors.RefertoFigure4-185SnubberCapacitorRemoval-TTS/TGS/TTH/TGH
(ExceptTTS300/TGS230)onpage171.
4. Usingamultimetersetforcapacitancemeasurement,placetheleadsonthecapacitorterminals.The
measuredvalueshouldbe0.42μFto0.52μF.
4.21.3 DC Capacitor Bus Bar Assembly Removal and Installation

• • • CAUTION • • •
TheDCBusCapacitorAssemblyshouldnotbedisassembled.Bleedresistors(orBalancedBoard),busbars,andcapacitorsarefactory
assembledandshouldonlyberemovedandinstalledasasinglecomponent.Incorrectdisassembly/assemblywillresultindamagetothe
compressor.

4.21.4 DC Capacitor Bus Bar Assembly General Removal
1. IsolatethecompressorpowerasdescribedinSection1.8ElectricalIsolationonpage22ofthismanual.
2. RemovetheSoftStart.RefertoSection4.14.3SoftStartRemovalandInstallationonpage117.
3. ContinuetoSection4.21.4.1DCCapacitorBusBarAssemblyRemoval-TTS300/TGS230for
TTS300/TGS230compressorsandforallotherTT/TGcompressors,continuetoSection4.21.4.2DC
CapacitorBusBarAssemblyRemoval-TTS/TGS/TTH/TGH(ExceptTTS300/TGS230)onpage170.
4.21.4.1 DC Capacitor Bus Bar Assembly Removal - TTS300/TGS230
1. RemovetheDCBusBarsfromtheSCRs.RefertoFigure4-179DCBusBarandSoftStartHarness
Removal-TTS300/TGS230forthisandthefollowingstep.
2. DisconnecttheDC+andDC-oftheSoftStartharnessfromtheDCbusassemblynotingtheorientation.
Figure 4-179 DC Bus Bar and Soft Start Harness Removal - TTS300/TGS230
3. DisconnectthesnubbercapacitorsfromtheInverternotingthelegorientationofonelegislonger
thantheother.RefertoFigure4-180SnubberCapacitorRemoval-TTS300/TGS230onpage169.

Page 168 of 294 - M-SV-001-EN Rev. H 1/23/2023

Danfoss TTS400 Specifications

General

Brand	Danfoss
Model	TTS400
Category	Air Compressor
Language	English