Rack Out Legacy Breaker; Empty Compartment-Legacy Breaker Removed; Check, Clean, Grease Compartment - ABB EntelliGuard AKD-5 Installation Manual

Turn OFF/ OPEN the Legacy Circuit Breaker
1. Before modifying the switchgear compartment, de-energize/switch off the breaker. If the circuit
breaker is ON and the springs are charged, to turn it off, press the OPEN button on the circuit
breaker fascia; and ensure that the circuit breaker contacts are open. Discharge the closing spring
before removing the breaker from the switchgear.

Rack Out Legacy Breaker

1. To rack-out legacy (old or original) breaker from the compartment, refer to your legacy-breaker's
manual on how to remove the existing breaker.
Empty Compartment—Legacy Breaker Removed
The following examples show a legacy breaker removed from
the enclosure or compartment

Check, Clean, Grease Compartment

1. Inspect the compartment for damage, rework.
2. Check cabinet for suitability of retrofill.
3. Having fully de-energized primary and control power,
check each breaker compartment for bolted joints in the
primary disconnect bars. Where such joints exist, check
the bolts for tightness.
4. Inside the compartment, check the contact areas on each primary disconnect bar or cluster of
fingers for foreign matter that may have accumulated. Clean those areas if necessary with a clean,
lint-free rag and isopropyl alcohol or acetone.
5. Be sure to apply a thin film of electrical grease Mobilgrease 28 (D50HD38) to the contact areas for
better electrical connections inside the compartment.
6. After removing the original AK breaker from the compartment, install the AKD-5 retrofill cassette.
(Note: If compartment has a position switch and a position switch actuator will be added to the
cassette, see Install Position Switch Actuator below.
7. Locate and replace Kirk key slide return spring on left side of compartment. Supplied with the
cassette assembly as a retrofill kit. Inspect the Kirk key slide mechanism, grease with Mobilgrease
28 (D50HD38) if required.
8. Install the cap, label and ¼-20 set screw to disable old racking mechanism. Also assemble Kirk key
side bracket, label and (2) ¼-20 Thread forming screws, see figure 10A & 10B. Supplied with the
cassette assembly as a retrofill kit.
17 EntelliGuard R Circuit Breaker Retrofill AKD-5 Installation Manual
(Figure 10).
Figure 10. AKD-5—Empty Cubicle
DEH-41547