Danfoss MCD3000 Series, Manual, Page: 23 / 54

MCD3000 Series
MG.15.B2.02 – VLT is a registered Danfoss trademark 23
Component Replacement Procedures
Step 6. Unplug the SCR leads.
Step 7. Cut the cable ties that secure the firing loom
to the Snubber/Overvoltage Protection Module.
Step 8. Undo the fixing screws (2) and remove the
Snubber/Overvoltage Protection Module.
Step 9. Fit the new Snubber/Overvoltage Protection
Module in reverse order.
SCRs: MCD3007 ~ MCD3132
Step 1. Remove the Main Control Module & Identity
Module using the method described on page 18.
Step 2. Unplug the firing looms (4) connected to the
SCR being replaced.
Firing Loom Connection Detail
MCD3007 ~ 3030
MCD3037 ~ 3045
MCD3055 ~ 3075
MCD3090 ~ 3132
Step 3. Undo the screws (2) connecting the input &
bypass bus bar (L1/B1, L2 or L3/B3) to the SCR being
replaced.
Model Torque
MCD3007 ~ MCD3030 4 NM
MCD3037 ~ MCD3075 7 NM
MCD3090 ~ MCD3132 12NM