7.2.7 Capacitor Bank(s)
Some D2/D4 size units have 2 capacitor bank assemblies mounted one above the
other. Separate disassembly instructions are given for upper and lower capacitor
banks. For units with one capacitor bank assembly only, disassemble in accordance
with instructions for
Single capacitor bank D1/D3 units
.
Upper capacitor bank D2/D4 units
1.
Remove the control assembly support bracket in accordance with instructions.
2.
Capacitor bank connection to DC bus bars can be seen recessed in the gap between
upper and lower cap banks. Remove the 2 nuts (10 mm) furthest from the DC bus bars.
A minimum 4 in [100 mm] extension is required.
3.
Remove the 4 retaining nuts (10 mm) from the cap bank cover plate and remove the
cover plate.
4.
Note that the weight of the cap bank is approximately 20 lbs [9 kg]. Remove the cap
bank by pulling it free from the mounting studs.
Reinstall in reverse order of this procedure. Tighten the mounting screws to 4 Nm (35 in-lbs).
130BX73.10
2
3
4
5
1
6
Figure 7.5: D2/D4 Upper and Lower Capacitor Bank Assemblies
380–480/500V: Blue DC Link Capacitors. 525–690V: Black DC Link Capacitors
1
Upper cap bank assy retaining nuts (step 2)
4
Lower cover plate retaining nut (step 3)
2
Upper cover plate
5
Gate drive card
3
Upper cover plate retaining nut (step 3)
6
Lower cap bank assy retaining nuts (step 1)
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
7-7
7
Summary of Contents for VLT HVAC FC 100
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