Danfoss MCD3000 Series, Manual, Page: 27 / 54

MCD3000 Series
MG.15.B2.02 – VLT is a registered Danfoss trademark 27
Component Replacement Procedures
Cooling Fans: MCD3030 ~ MCD3055
Step 1. Disassemble the MCD3000 as described for
Identity Module replacement, Steps 1 to 3 (Page 18).
Step 2. Remove all remaining plastic end caps and
fan grills.
Step 3. Unplug the firing looms (4 per SCR)
connected to each of the SCRs.
Firing Loom Connection Detail
MCD3007 ~ 3030
MCD3037 ~ 3045
MCD3055
Step 4. Undo and remove the screws (2 per SCR)
connecting the input and bypass bus bars (L1/B1, L2
& L3/B3) to each of the SCRs.
Step 5. Slide the bus bars (up or down) until clear of
the screw securing the output bus bars (T1, T2, & T3)
to the SCRs.
Step 6. Undo and remove the screws (1 per SCR)
connecting the output bus bars (T1,T2 & T3) to each
of the SCRs.
Step 7. Remove the screws (2) securing the bus bar
support bracket to the base plate.