Danfoss VLT HVAC Drive FC 100 Service Manual page 158

High Power Service Manual for VLT
Adjustable Frequency Drives
13. Remove the 2 IGBT modules by removing the 16 retaining screws (8 per module) and
sliding the modules free from under the bus bars.
14. Clean the heatsink surface with a mild solvent or alcohol solution.
Figure 7.25: D2/D4 IGBT Modules (3 of 3)
1
2
REASSEMBLY
1. Replace the IGBT module in accordance with the instructions provided with the replace-
ment unit.
2. Reassemble the remaining parts in reverse order of their removal.
3. Reinstall the module and mounting screws. Tighten the remaining T25 and 8 mm screws
to 2.3 Nm (20 in-lbs) and T30 and 10 mm to 4 Nm (35 in-lbs).
®
FC Series
1
IGBT module
Retaining screw (Step 13)
MG.90.L1.22 - VLT ® is a registered Danfoss trademark
7 D-Frame Sizes Disassembly and Assembly
2
Instructions
7
7-27