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.
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Summary of Contents for Turbocor TT Series
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