Danfoss Turbocor TT Series, Service Manual

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Figure 4-165 Bus Bar Locations - TTS300/TGS230
11. Torque the six (6) M6x16 SCR to SCR Cooling Manifold fasteners to 5 Nm (44 in.lb.).
12. Torque the six (6) M6x16 SCR Bus Bar fasteners to 5 Nm (44 in.lb.).
13. Torque the two (2) Capacitor DC Bus Bar to SCR Bus Bar fasteners to 10 Nm (7 ft.lb.).
14. Mount the three (3) fuse block assemblies on top of the Terminal Block Adapter, then install the two (2)
fasteners for each of the three (3) fuse block assemblies and torque to 4 Nm (35 in.lb).
15. Install the three (3) M6x16 fasteners that connect the fast-acting fuses to the SCRs and torque to 5 Nm
(44 in.lb).
16. Install the mains input cables to the Terminal Block and torque to 20 Nm (15 ft.lb.).
17. Continue to Section 4.18.3.6 SCR General Installation on page 156.
4.18.3.5 SCR Installation - TTS/TGS/TTH/TGH (Except TTS300/TGS230)
1. Clean the contact surfaces of SCR Cooling Manifold.
2. If the SCRs are to be reused, clean their mounting surface (backside) to ensure the surface is free of any
contaminants.
3. Spread a thin and uniform coat of Dow Corning Silicone Heat Sink paste (or equivalent) entirely over
the bottom of each SCR surface. Refer to Figure 4-166 SCR Heat Sink Paste Application -
TTS/TGS/TTH/TGH (Except TTS300/TGS230).
Figure 4-166 SCR Heat Sink Paste Application - TTS/TGS/TTH/TGH (Except TTS300/TGS230)
4. Install the three (3) SCRs.
a. For Revision F and earlier compressors, finger-tighten the 12 M6x16 fasteners, then tighten in a
crisscross pattern in two (2) stages. Refer to Figure 4-167 SCR Torque Sequence - TTS/TGS/TTH/TGH
Rev. F and Earlier (Except TTS300/TGS230) on page 156.
o
Stage 1: Tighten to 2 Nm (18 in.lb.)
o
Stage 2: Tighten to a final torque of 5 Nm (44 in.lb.)
b. For Revision H compressors, tighten the six (6) M6x16 fasteners to 5 Nm (44 in.lb).
M-SV-001-EN Rev. H-1/23/2023 Page 155 of 294