Modify Akd-5 Switchgear Compartment; Turn Off/ Open The Legacy Circuit Breaker; Rack Out Legacy Breaker; Empty Compartment-Legacy Breaker Removed - ABB AKD-5 Installation Manual

Modify AKD-5 Switchgear Compartment

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 or contact a qualified Field Service Engineer.
Empty Compartment—Legacy Breaker Removed
Figure 10 Shows an empty AK75 compartment.

Check, Clean, Grease Compartment

1. Inspect the compartment for damage.
2. Check compartment 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. If compartment has a position switch and a position switch actuator will be added to the cassette, see Install
Position Switch Actuator section appropriate for the particular frame size breaker.
7. Install the AKD-5 AKD-6 retrofill cassette.
8. Locate and replace Kirk key slide return spring on left side of AK75 and AK100 compartments (supplied with the
cassette assembly as a kit). Inspect the Kirk key slide mechanism, grease with Mobilgrease 28 (D50HD38) if
required.
9. Install parts to prevent use of the old/original legacy Draw out Mechanism.
16 EntelliGuard R Circuit Breaker Retrofill AKD-5/6 Installation Manual
Figure 10. AKD-5—Empty Comp't
DEH0005240 R01