GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 143)

8.2.11 Heatsink Fan Assembly
1. Remove the input terminal plate in accordance with procedure.
2. Remove the retaining nut (17 mm) or T50 Torx screw, depending on the unit type, connecting each of the 3 IGBT over-fan bus bars to the 3 current sensor
bus bars.
3. Remove the retaining nut (17 mm) connecting each of three IGBT over-fan bus bars to three IGBT output bus bars.
4. Disconnect the in-line Molex connector in the fan wiring. Cut the tie wrap to free the wiring from frame.
5. Remove the fan assembly by removing the 6 retaining nuts (10 mm). Note that the fan assembly weighs approximately 11 kg (25 pounds).
Reinstall in reverse order of this procedure. Tighten the 10 mm retaining nuts to 4 Nm (35 in-lbs) and the 17 mm connecting nuts or T50 screw to 19 Nm (170 in-
lbs).
130BX103.10
3
2
1
6
5
4
Illustration 8.1: Fan Assembly
1 IGBT output bus bar BB49 4 Retaining nut (Step 3)
2 Fan housing 5 Molex connector (Step 4)
3 Retaining nut (Step 5) 6 Retaining nut (Step 2)
AF-650 GP and AF-600 FP High Power Service Manual
142
8