8. Pull the reversing movable contact assembly and the
reversing neutral stationary contact forward toward the
steel front panel as far as possible. See Figure 37.
9. Rotate the reversing movable contact counter clockwise
until the movable contact assembly disengages from
the reversing neutral stationary contact and remove it
from the tap-changer. See Figure 38.
10. Remove the reversing neutral stationary contact
assembly from the tap-changer contact panel.
Figure 38. Rotating of reversing movable contact.
11. Remove the reversing actuator shaft from the reversing
movable contact assembly and retain for use in the
new contact assembly. See Figure 39.
Reassembly
12. Insert the reversing actuator shaft into the new
reversing movable contact assembly. See Figure 39.
13. Place the reversing movable contact into the mounting
slot in the tap-changer front panel, aligning the movable
contact assembly with the reversing neutral stationary
contact. The reversing neutral stationary contact should
be inserted far enough into the contact board so that
the blade lines up with the center of the reversing
movable contacts. See Figure 40.
Figure 37. Reversing movable and stationary contacts.
Figure 39. The actuator shaft removed from the
reversing movable contact assembly.
Figure 40. Reinstalling reversing movable contact.
Reversing
Movable
Contact
Assembly
Reversing
Movable
Contact
Assembly
Mounting
Slot
Reversing
Movable
Contact
Assembly
Neutral
Reversing
Stationary
Contact
Assembly
18
QD5 QUIK-DRIVE TAP-CHANGER INSTALLATION AND MAINTENANCE INSTRUCTIONS
MN225012EN March 2016
