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.
130BX126.10
1
2
Figure 7.25: D2/D4 IGBT Modules (3 of 3)
1
IGBT module
2
Retaining screw (Step 13)
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).
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
7 D-Frame Sizes Disassembly and Assembly
Instructions
MG.90.L1.22 - VLT
®
is a registered Danfoss trademark
7-27
7
Summary of Contents for VLT HVAC FC 100
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