GE Industrial Solutions EntelliGuard 800–2000 A Frames, 240–600 Vac Maintenance Manual - Manual (Page 39)

EntelliGuard™ 800–2000 A Power Circuit Breakers
Chapter 7. Maintenance of Standard Parts and Assemblies
29
Figure 27. Primary disconnect removal and installation on EGS08, EGF08, and EGH08 breakers.
Primary Disconnect Installation on EGX08,
EGS16, EGF16, EGH16, EGS20, and EGF20
Breakers
1. Slide the main retainer over the stud.
2. Position each of the stud spacers, in turn, in the
holes in the stud and secure with the spring clips.
Note that the holes in the stud spacers are off center
and must be positioned with the hole toward the
back of the breaker to align with the holes in the
clips.
3. Set a pair of bow-tie spacers into one of the fingers,
place a retainer over the spacers to hold them in
position, then turn the subassembly over. Slide a
long bolt through the hole in the retainer and fin-
ger, then through the clip and stud spacer. Hold the
bottom finger subassembly in place.
4. Place a finger through the bolt from the top, then
place two bow-tie spacers in the finger and hold
them in position with a retainer.
5. Place a spring, bushing, and flat washer over the
bolt, then secure with the two nuts.
6. Repeat steps 3–5 for the other half of the pole.
7. The primary disconnect assembly on new breakers is
adjusted in the factory for a force of 85–105 pounds
on a 1 / 2 -inch-thick copper bar between the fingers.
This force range can be obtained after installation
of a new primary disconnect assembly by adjusting
the finger spacing as shown in Figure 29. Loosen
the lock nuts to obtain a spacing of 0.766–0.797
inch between the top of the upper retainer and the
bottom of the flat washer. Tighten the lock nuts.