12. If a Potted DC-DC Converter is being installed, clean the surface of the Inverter Heat Sink Plate and the
DC-DC Converter. The Open-Frame DC-DC Converter does not require heat sink paste.
13. Install the DC-DC Converter. Refer to Section 4.24.3 DC-DC Removal and Installation on page 206.
14. Install the DC bus Bar and Capacitor Assembly and Snubber Capacitors. Refer to Section 4.21.4.3 DC
Capacitor Bus Bar Assembly Installation - TTS300/TGS230 on page 174.
15. Install the Terminal block and Fuse assemblies. Refer to Section 4.11.2 3-Phase Main Voltage Input
Terminal Block Removal and Installation on page 102.
16. Install the mains input cables to the Terminal Block and torque to 20 Nm (15 ft.lb.). Connect the SCR
Gate cable harness to the SCRs noting its orientation.
17. Connect the SCR Gate cable harness to the SCRs noting its orientation.
4.22.6.4 Compressor Specific Inverter Installation Steps - TTS/TGS/TTH/TGH (Except TTS300/TGS230)
1. Clean the O-ring groove in the main compressor housing with a lint-free cloth.
2. Apply O-lube and install the Inverter O-ring in the compressor housing groove.
3. Remove the backing material from the Inverter Cooling Manifold of the new Inverter. Use caution to
not damage the bottom sealing surface of the Inverter.
4. Install the 18 M6x30 fasteners into the Inverter assembly with the exception of the four (4) M6x35 SCR
Manifold fasteners and carefully lower the assembly onto the compressor housing. Use the installed
fasteners to properly line up the Inverter. Refer to Figure 4-209 Inverter Fastener Locations -
TTS/TGS/TGH (Except TTS300/TGS230) on page 187.
Figure 4-209 Inverter Fastener Locations - TTS/TGS/TGH (Except TTS300/TGS230)
5. Once the Inverter is in place, finger-tighten the Inverter fasteners in a diagonal pattern and torque to 3
Nm (27 in.lb.) on the first pass, then to 7 Nm (62 in.lb.) on the second pass.
6. Install the SCR Cooling Manifold and SCRs. Refer to Section 4.19.5 SCR Cooling Manifold Specific
Installation Steps - TTS/TGS/TTH/TGH (Except TTS300/TGS230) on page 160.
7. Install the three (3) Copper Tubes and torque the M8x70 fasteners to specification.
8. Install the DC-DC Converter to the Inverter cooling manifold. Refer to Section 4.24.3 DC-DC Removal
9. Verify the compressor cable harness (and the SCR Temperature Sensor Cable - if applicable) is properly
placed across the cooling manifold.
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