7.2.14 Heatsink Fan Assembly
1.
Remove the input terminal mounting plate assembly per instructions.
2.
Remove the 3 IGBT output bus bars (see Figure 7-20) by removing the 6 retaining nuts
(8 mm), one from each end, of the IGBT output bus bars. Remove the bus bars.
NOTE!
Omit steps 3 and 4 for D2/D4 units.
3.
Use a 4 in [100 mm] minimum extension and remove terminal 1 from the SCR/diode
module.
4.
Note the color coding for each of the three wires attached to the retaining studs. Ensure
that the correct wire is attached to the applicable stud during reassembly. Remove the
AC power lead to the intermediate SCR input bus bar by removing the nut (8 mm) and
remove the bus bar.
CONTINUED ON NEXT PAGE
130BX88.10
1
2
1
3
4
6
5
Figure 7.20: Fan Assembly (1 of 2)
1
Terminal (Step 3)
2
Intermediate SCR input bus bar (Step 3)
3
Retaining nut (Step 4)
4
Retaining nut (Step 2)
5
IGBT output bus bar (Step 2)
6
Retaining nut (Step 2)
7 D-Frame Sizes Disassembly and Assembly
Instructions
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
7-22
MG.90.L1.22 - VLT
®
is a registered Danfoss trademark
7
Summary of Contents for VLT HVAC FC 100
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