14. Insert a standard flat screwdriver between the middle
and top button contacts on the reversing movable
contact assembly and twist to separate. Line up
the movable and stationary contacts and rotate the
movable contact assembly clockwise over the reversing
stationary contact. See Figure 41.
15. Continue to reposition the screwdriver, separate the
button contacts and rotate the reversing movable
contact assembly until the middle button contact is
fully engaged in the center of the reversing stationary
contact blade. See Figure 42.
16. Slide the stationary and movable contact assembly
toward the contact panel. Align the movable contact
assembly so that the reversing movable tube aligns
with and goes through the hole in the contact panel. At
this point the stationary contact and movable contact
should be fully engaged with the contact panel. See
Figure 43.
17. Place a flat washer and nut over each of the reversing
neutral stationary contact studs. Tighten to a torque of
80
–
90 in-lbs (9.0
–
10-2 Nm). See Figure 44.
Figure 44. Reinstalling neutral stationary and hardware.
Figure 42. Engaging contacts.
Neutral Stationary
Contact
Movable
Contact
Assembly
Figure 43. Aligning with main contact board.
Figure 41. Positioning reversing movable contacts.
Neutral
Stationary
Studs
Reversing
Movable Tube
Main Stationary
Board
19
QD5 QUIK-DRIVE TAP-CHANGER INSTALLATION AND MAINTENANCE INSTRUCTIONS
MN225012EN March 2016
