5. Finger-tighten the four (4) M5x16 fasteners and then torque in a crisscross pattern to 3 Nm (27 in. lb.)
and then to a final torque of 5 Nm (44 in.lb.). Refer to Figure 4-261 Bearing Power Feedthrough Torque
Sequence.
Figure 4-261 Bearing Power Feedthrough Torque Sequence
6. Leak test and evacuate in accordance with standard industry practices.
7. Carefully install the PWM. Refer to Section 4.28.4 PWM Removal and Installation on page 228.
8. Plug the cable harnesses back into the 4-pin feedthrough and 6-pin feedthrough.
9. Carefully, install the BMCC. Refer to Section 4.27 BMCC on page 220.
10. Carefully, install the Serial Driver. Refer to Section 4.26.4 Serial Driver Removal and Installation on page
11. Install the Service Side Cover. Refer to Section 4.1.3.1 Service Side Cover Removal and Installation on
12. Return the compressor to normal operation.
4.29.4.3 Magnetic Bearing Torque Specifications
Table 4-47 Magnetic Bearing Torque Specifications
Description
Nm
Ft.Lb.
In.Lb.
Inverter and Backplane Ground fastener, M5x25
3
-
27
Backplane Mounting/Ground fastener, M5x10
3
-
27
PWM Mounting/heatsink fastener, M5x10
4.5
-
40
Bearing Power Feedthrough fastener, M5x16
5
-
44
Cover fastener, M5x15
1.5
-
13
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Summary of Contents for Turbocor TT Series
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