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3. Using minimal force, push in on the Inverter Cable Harness connector. While doing this, the latches
should fold in once the cable connector has reached the proper depth.
4. Use the same process to connect the Inverter Cable Harness to the Backplane J6 connection.
5. Install the ground connector of the Inverter Cable Harness to the Backplane. Torque the M5x10 fastener
to 3 Nm (26.5 in.lb.).
6. Install new cable ties as necessary.
7. Install the Soft Start. Refer to Section 4.14.3 Soft Start Removal and Installation on page 117.
8. Install the Service Side Cover. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
9. Install the top covers. 4.1 Compressor Covers on page 52.
10. Return the compressor to normal operation.
4.22.5 Inverter Cable Harness Torque Specifications
Table 4-34 Inverter Cable Harness Torque Specifications
Description
Nm
Ft.Lb.
In.Lb.
Backplane Ground fastener, M5x10
3
-
26.5
Soft Start Mounting fastener, M5X15
5
-
44
Cover Fastener, M5x15
1.5
-
13
4.22.6 Inverter Removal and Installation
General Removal
1. Isolate compressor power as described in Section 1.8 Electrical Isolation on page 22.
2. Isolate the compressor and recover the refrigerant according to industry standards. Refer to Section 3.1
Refrigerant Containment on page 41.
3. Disconnect the mains input wires from the Terminal Block.
4. Remove the Soft Start. Refer to Section 4.14.3 Soft Start Removal and Installation on page 117.
5. For TT300/TG230 compressors continue to Section 4.22.6.1 Compressor Specific Inverter Removal Steps
- TTS300/TGS230, for all other TT/TG/TTH compressors, continue to Section 4.22.6 Inverter Removal and
Installation on page 179.
4.22.6.1 Compressor Specific Inverter Removal Steps - TTS300/TGS230
1. Disconnect the two (2) SCR Gate connectors from each rectifier.
2. Remove the Fuse Block Assemblies and Terminal Block from the compressor. Refer to Section 4.11.2 3-
Phase Main Voltage Input Terminal Block Removal and Installation on page 102.
3. Remove Snubber Capacitors and DC Bus Assembly. Refer to Section 4.21.4.1 DC Capacitor Bus Bar
Assembly Removal - TTS300/TGS230 on page 168.
4. Remove the M8x70 Motor Bus Bar fasteners from the Inverter. Refer to Figure 4-195 Inverter Copper
Tube Removal on page 180 and the note below.
NOTE
It is not necessary to completely remove the Motor Bus Bars.
5. Slide out all three (3) Inverter Copper Tubes.
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