GE Industrial Solutions EntelliGuard R AKD-8 - Manual (Page 21)

20 EntelliGuard R Circuit Breaker Retrofill AKD-8 Installation Manual DEH-41549 02/12
1. Verify that the breaker is in the disconnected, switched-off position before mounting it on rails.
2. Pull out the cubicle rails, horizontal to the ground.
3. While rotating the lever (away from the cubicle) at the end of each rail, which unlocks the inner rail, pull
the rail assemblies outwards to their fully extended positions. The rails can now support and secure the
Retrofilll breaker in the switchgear.
4. Get a hand-crane and wheel it over to the breaker (or use a forklift, Figure 10 and Figure 11). This might
need a two-man effort: one to carefully and slowly lower the boom with the suspended breaker and the
other to guide the breaker into the switchgear enclosure.
Figure 10. AKD-8—Using a Forklift, AKD-8 CB, Front View Figure 11. AKD-8—Using a Forklift, AKD-8 CB, Top View
5. Lower the boom of the lifting device so that you have enough slack to insert its two hooks in the
breaker’s lifting holes. Or attach a lifting bar between the two holes eye bolt provided with the circuit
breaker, instead of hooks.
6. Make sure that the crane lifting hooks are secured and locked in place on the breaker if the fork lift is not
being used.
7. Using the hydraulic lift, raise the breaker slowly so that it clears the breaker platform. Suspend the
hoisted breaker a yard off the ground or floor. Carefully wheel crane, with hoisted breaker, over to the
switchgear for installation.
8. Line up the breaker in front of the unit in where it is to be installed, leaving enough clearance to
maneuver the Retrofill.
9. Check that the Retrofilll is free from obstruction inside the compartment.
10. When the breaker is lined up with the compartment, raise the breaker only slightly higher than the
compartment floor, keeping it at a slight angle.
11. Keep the breaker steady. Continue to guide the breaker, while checking both sides and underneath, so
that both sets of pins can be lowered and lined up easily with the rails’ slots.
12. Place retrofit EntelliGuard R Retrofill breaker on the rails to the disconnect position of the legacy breaker.
(Note that the pins must line up with the slots on the rails.)
13. As soon as the breaker is resting on the rails, unhook the lift hooks from the ears or holes of the circuit
breaker. Move the hoisting apparatus out of the way.