GE Industrial Solutions ProTrip Conversion Kits AK-15, AK-25, and AKU-25 - Manual (Page 5)

5
SECTION 3. FRONT-FRAME
CONVERSION
Front-frame conversion consists of the following steps:
1. Separation of the front and back breaker frames.
2. Removal of the existing trip devices.
3. On electrically operated breakers with EC trip
devices, relocating and remounting the X and Y
relays.
3. Installation of the flux shifter and trip paddle.
4. Installation of the trip unit mounting bracket.
5. Installation of the trip unit wire harness.
Separation of the Front and Back Frames
Use the following procedure to separate the front and
back frames of the breaker.
1. Remove the breaker from its enclosure and place it
on a suitable work surface.
2. Verify that closing springs are discharged and that
the breaker is OPEN.
3. Loosen the two captive nuts and lift off the arc chute
retainer, shown in Figure 1.
4. Lift the three arc chutes straight up and out of the
breaker.
5. Remove the long screw and nut through the two
connecting links on each side of the breaker, as
shown in Figure 2.
6. Carefully place the breaker on its back surface,
resting on the primary disconnects.
Figure 1. Arc chute retainer and arc chutes.
Figure 2. Screw to be removed from connecting links.