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M-SV-001-EN Rev. G
4.19.2.12 SCR Temperature Sensor Torque Specifications
Table 4-31 SCR Temperature Sensor Torque Specifications
4.19.3 SCR Removal and Installation
4.19.3.1 SCR General Removal
1. Isolate the compressor power as described in Section "1.8 Electrical Isolation" on page 19.
2. Remove the mains input cables from the Terminal Block.
3. Continue to Section "4.19.3.2 SCR Removal - Two Hole Mount - TTS300/TGS230" for TT300/
TG230 compressors and for all other TT/TG compressors, continue to Section "4.19.3.3 SCR
Removal - TTS/TGS/TTH/TGH (Except TTS300/TGS230)" on page 143.
4.19.3.2 SCR Removal - Two Hole Mount - TTS300/TGS230
1. Disconnect the two (2) SCR Gate connectors from each rectifier. Refer to "Figure 4-156 Fuse
Block Assemblies - Two Hole Mount - TTS300/TGS230" on page 142 for this and the following
four (4) steps.
2. For Remove the three (3) fasteners that connect the Fast Acting Fuses to the SCRs.
3. Remove the six (6) Fuse to Terminal Block fasteners that secure the fuses to the Terminal Block
Adapter.
4. Remove the fuses.
5. Remove the insulating Mylar.
Description Nm Ft.Lb. In.Lb.
TTS300/TGS230 AC Bus Bar to SCR fastener, M6x16 5 - 44
TTS300/TGS230 Fuse to Terminal Block fastener 4 - 35
Soft Start Mounting fastener, M5X15 5 - 44
Upper Nut, 5/16" - 18 UNC 10 7 89
Jam Nut, 5/16" - 18 UNC 7 - 62
Lower Nut, 5/16" - 18 UNC 20 15 177
Cover fastener, M5x15 - - 13
SCR Cooling Sensor (excludes TTH compressors) 6 - 53
Snubber Capacitor fastener, M6x16 7 - 62
Nylon Capacitor Nuts 7 - 62
Terminal Block Mounting fastener, M5x45
(excludes TTS300/TGS230 compressors)
4 - 35
AC Bus Bar to SCR fastener, M8x20 (excludes TTS300/TGS230 compressors) 9 - 80
Capacitor DC Bus Bar to SCR fastener, M8x20
(excludes TTS300/TGS230 compressors)
9 - 80
Mains Input Nut, 3/8" - 16 UNC (excludes TTS300/TGS230 compressors) 21 15 186
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