Danfoss VLT series, Service Manual

Page: 120 / 158

6-24
VLT is a registered Danfoss trademark
Figure 6-15. D2 IGBT Modules (3 of 3)
IGBT module
Retaining screw
(Step 13)
13. Remove 2 IGBT modules by removing 16
retaining screws (8 per module) and slide modules
free from under bus bars.
14. Clean heatsink surface with mild solvent or alcohol
solution.
REASSEMBLY
1. Replace IGBT module in accordance with
instructions provided with replacement unit.
2. Reassemble remaining parts in reverse order of
their removal.
3. Reinstall module and mounting screws. Tighten
remaining T25 and 8mm screws to 20 in-lbs (2.25
Nm) and T30 and 10 mm to 35 in-lbs (4 Nm).