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b. Loosley install the six (6) fasteners that secure the three (3) AC Bus Bars to the Terminal
Block.
c. Loosley install the three (3) M8x20 fasteners that secure the AC Bus Bars to the SCRs.
d. Torque the six (6) fasteners to 3 Nm (27 In.lb).
e. Torque the three (3) M8x20 fasteners to 9 Nm (80 in.lb.).
f.
Install the connectors of the Soft Start AC/DC Harness to the bus bars.
2. For Revision H compressors, refer to "Figure 4-93 AC/DC Bus Bus Bar Connectors - TTS/TGS/
TTH/TGS Rev. H (Except TTS300/TGH230)" and do the following:
a. Place the AC Bus Bars into position.
b. Loosley install the six (6) fasteners that secure the three (3) AC Bus Bars to the Terminal
Block.
c. Place the three AC/DC Bus Bar ring terminals in position and loosley install the three (3)
M6x16 fasteners that secure the AC Bus Bars to the SCRs.
d. Torque the six (6) M5x12 fasteners to 2 Nm (17 In.lb).
e. Torque the three (3) M6x16 fasteners to 5 Nm (44 in.lb.).
3. Install the mains input cables to the Terminal Block and torque to 21 Nm (15 ft.lb.).
4. Install the top covers. Refer to "4.2 Compressor Covers" on page 56.
5. Return the compressor to normal operation.
4.13.2.3 AC Bus Bar Torque Specifications
Table 4-21 AC Bus Bar Torque Specifications
Description
Nm
Ft.Lb.
In.Lb.
AC Bus Bar to Terminal Block fastener - Rev F and earlier (excludes TTS300/
TGS230 compressors)
3
-
27
AC Bus Bar to Terminal Block fastener - Rev H (excludes TTS300/TGS230
compressors)
2
-
17
Terminal Block to SCR Cooling Manifold fastener, M6x16, Rev H (excludes
TTS300/TGS230 compressors)
5
-
44
AC 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
Cover fastener, M5x15
1.5
-
13
4.14 Terminal Block Fuse Replacement
TTS300/TGS230 compressors have class T fast-acting fuses installed in the Terminal Block.
Figure 4-94 Terminal Block Fuse
4.14.1 Verification of Terminal Block Fuse
1. Isolate the compressor power as described in Section "1.8 Electrical Isolation" on page 19.
2. Set the multimeter for resistance measurement.
3. Place one (1) meter probe the input side of the fuse and the other probe on the load side. Refer
to "Figure 4-95 Terminal Block Fuse Test" on page 106. The resistance should be no greater
than 2Ω.
Summary of Contents for Turbocor TTS Series
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