Replacement Of A Distribution Fuse Block Or Circuit Breaker; Replacing A Cabinet Alarm Lamp - Liebert 1500 User Manual

5.3.4

Replacement of a Distribution Fuse Block or Circuit Breaker

CAUTION
!
Precautions must be taken to avoid service interruptions.
Use properly insulated tools when working on the power
distribution panels.
Replace a distribution fuse block as described below.
1. Notify the alarm center of incoming alarms during this procedure.
2. Remove the fuse from the fuse block to be replaced.
3. Remove the rear panels of the cabinet.
4. Carefully remove and insulate any load and alarm leads connected to the fuse block.
5. Carefully remove the fuse block.
6. Ensure that the fuse is removed from the new fuse block.
7. Carefully install the new fuse block.
8. Reconnect the load and alarm leads disconnected in Step 4.
9. Install the fuse in the fuse block.
10. Notify the alarm center of the end of this procedure.
Replacing a distribution circuit breaker
Replace a distribution circuit breaker as described below.
1. Notify the alarm center of incoming alarms during this procedure.
2. Place the circuit breaker to be replaced in the OFF position.
3. Remove the rear panels of the cabinet.
4. Carefully remove and insulate any load lead and alarm lead connected to the circuit breaker.
5. Carefully remove the circuit breaker.
6. Ensure that the new circuit breaker is in the OFF position before installing it.
7. Carefully install the new circuit breaker.
8. Reconnect the load and alarm leads disconnected in Step 4.
9. Turn on the circuit breaker
10. Notify the alarm center of the end of this procedure.
5.3.5

Replacing a Cabinet Alarm Lamp

Replace a cabinet alarm lamp as described below.
1. Remove the LP fuse on the controller (F31).
2. Unscrew and remove the lens cap on the cabinet alarm lamp unit.
3. Pull the defective light bulb out.
4. Insert the new light bulb.
5. Screw back the lens cap on the cabinet alarm lamp unit.
6. Reinstall the LP fuse on the controller (F31) removed in Step 1.
48 Maintenance