121 of 282
M-SV-001-EN Rev. G
7. Hold the two (2) M6x20 Bus Bar bolts with a wrench and torque the M6 nuts to 10 Nm (7 ft.lb.).
8. Install the top covers. Refer to "4.2 Compressor Covers" on page 56.
9. Return the compressor to normal operation.
4.16.1.3 SCR DC Bus Bar Torque Specifications
Table 4-27 SCR DC Bus Bar Torque Specifications
4.17 Soft Start SCR Gate Cable
There are two (2) different styles of this cable, one for the Closed-Top Soft Start and one for the Open-
Top Soft Start. Refer to "Figure 4-121 Soft Start SCR Gate Cable (Closed-Top Soft Starts)" and "Figure
4-122 Soft Start SCR Gate Cable (Open-Top Soft Starts)" for the examples of each.
The following steps provide detail on how to replace the Soft Start SCR Gate Cable. Prior to removal,
note the location of the harness routing as this will minimize the installation time of the new harness.
4.17.1 Soft Start SCR Gate Cable Connections
Figure 4-121 Soft Start SCR Gate Cable (Closed-Top Soft Starts)
Figure 4-122 Soft Start SCR Gate Cable (Open-Top Soft Starts)
4.17.2 Soft Start SCR Gate Cable Removal and Installation
4.17.2.1 Soft Start SCR Gate Cable Removal
1. Isolate the compressor power as described in Section "1.8 Electrical Isolation" on page 19.
2. Remove the six (6) Soft Start SCR Gate Cable connectors from the SCRs. This may require the
use of needle-nose pliers. Refer to the following figures for this and the next step.
• "Figure 4-123 Soft Start SCR Gate Cable Removal - TTS300/TGS230" on page 122
• "Figure 4-124 Soft Start SCR Gate Cable Removal at SCR - TTS/TGS/TTH/TGH Models Rev. F
and Earlier (Except TTS300/TGS230)" on page 122
• "Figure 4-125 Soft Start SCR Gate Cable Removal at SCR - TTS/TGS/TTH/TGH Models Rev. H
(Except TTS300/TGS230)" on page 122 for the appropriate compressor model
Description Nm Ft.Lb. In.Lb.
SCR DC Bus Bar fastener, M6x16 5 - 44
DC Capacitor Bus Bar to SCR Bus Bar Nut, M6 10 7 89
Cover fastener, M5x15 1.5 - 13
SCR Gate Connector
(3 places)
SCR Gate Signal
Connector (to J8)
SCR Gate Connector
(3 places)
SCR Gate Signal
Connector (to J2)
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