Replacing a defective Q1 disconnector

Part number

Designation

Tightening torque M8

29663334

Disconnector DDC-200/2-SK

14 Nm

In the event of a defective Q1 disconnector, additionally check the following components for correct function:

  • Auxiliary contacts Q1.1/Q1.2
  • Fuse F1
  • Fuse F2
  • Fuse F3
  • Contactor K1, K2, K3
  • Storage bundle (are there defective modules in the storage bundle?)

 

Required tool:

  • Hexagon socket: Set
  • Wrench: Set
  • Torque wrench 0 Nm – 20 Nm

 

Procedure:

  1. To ensure the correct installation depth of the linkage during reinstallation, mark the linkage.
  2. Remove the linkage by loosening the set screws.
  3. Loosen the M8 screws.
  4. Remove the auxiliary contacts.
  5. Remove all electrical connections.
  6. Remove the disconnector from the mounting plate.
  7. Mount the new disconnector on the mounting plate.
  8. Mount the auxiliary contacts.
  9. Restore all the electrical connections.
  10. Tighten the M8 screws to the specified torque.
  11. Mount the linkage.