GE Industrial Solutions EntelliGuard R AKD-6 - Manual (Page 29)

28 EntelliGuard R Circuit Breaker Retrofill AKD-6 Installation Manual DEH-41548 02/12
Figure 21. AKD-6 Rails or Arms for Mounting Retrofill Cassette/CB
4. Get a hand-crane and wheel it over to the breaker. 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.
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 eyes of the circuit breaker, instead of hooks.
6. Make sure that the crane lifting hooks are secured and locked in placed on the breaker.
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 retrofill 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 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 ( Figure 22 ) to the disconnect position of the legacy
breaker. (Note that the pins must line up with the slots on the rails.)