HPE Nimble Storage HF Series Hardware Manual page 104

1 Grounding bolts
2 Ground cable
b) Connect the other end of the ground cable to an approved grounding point in your environment, such as a grounding
plate on the rack.
2. Remove the power cord from one of the AC PSUs.
3. Push the power supply release lever to the left, grasp the handle, and pull out the power supply.
1 Power supply release lever
4. Insert the new PSU. Push in gently until you hear a click.
Do not force the power supply. If it does not slide in properly, remove it and try again.
The DC PSU has an internal fuse for overload protection. In the installation environment:
A 50A circuit breaker is required at the DC power source. Ensure that there is a reliable grounded (earthed) connection
before connecting power.
To disconnect the array from DC power, turn off both branch circuit breakers that supply power to the array PSUs. A
branch circuit breaker must be provided as part of the installation environment.
5. Attach the power connections to the PSU.
a) Push the power supply release lever to the left, grasp the handle, and pull the power supply out several inches to access
the connector cover.
3 Left back rack post
2 Power supply handle
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Maintenance Procedures 104