Danfoss TTS400 User Manual

Figure 4-218 Stator Thermistor R/T Curve
4.23.5 Motor Components Removal and Installation
ThissectioncontainsstepsthatexplaintheremovalandreplacementoftheMotorBusBars,CopperTubes,Cover
Plate,andtheHigh-PowerFeedthroughs.ThefollowingstepsapplytoallTTS/TGS/TTH/TGHcompressors.
TheTTS/TGS/TTH/TGHcompressorsutilizetwodifferentstylesofHigh-PowerFeedthroughs.Thereisaclearphysical
distinctionbetweenthetwostyles.ThePolyphenyleneSulfide(PPS)stylehasthreadedfemaleendswhilethe
stainless-steelstylehasthreadedmaleendsthatrequirebrassnuts.Whennecessary,thetwo(2)differenttypeswill
beidentified.
4.23.5.1 Motor Bus Bar Removal
1. IsolatecompressorpowerasdescribedinSection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. RemovetheMotorBusBars.IfthefeedthroughisaPPSstyle,holdtheHigh-PowerFeedthroughwitha
wrenchwhileremovingthemotorbusbarfastenerinordertopreventthefeedthroughfromrotating.
Ifthefeedthroughisstainless-steelstyle,holdtheinnernutwithawrenchwhilelooseningtheouter
nut.RefertoFigure4-219MotorBusBarRemoval-PPSFeedthroughsonpage197andFigure4-220
MotorBusBarRemoval-Stainless-SteelFeedthroughsonpage197.
• • • CAUTION • • •
WhileremovingtheM10nutsfortheStainless-SteelHigh-PowerFeedthrough,itisimportanttoholdtheinnernutwithawrench.Failure
todosocouldplaceanexcessiveloadonthefeedthroughcausinginternaldamage.Also,thefeedthroughitselfcouldmovewhichcould
allowittoloosenorbeovertorqued.

Page 196 of 294 - M-SV-001-EN Rev. H 1/23/2023

Danfoss TTS400 Specifications

General

Brand	Danfoss
Model	TTS400
Category	Air Compressor
Language	English