HP HPE Alletra 2140 Hardware Manual page 96

Procedure
1. Install the provided ground bracket.
a) Fit the ground bracket over the four T-studs on the left side of the array chassis near the rear.
1 Ground bracket
2 T-studs
b) Slide the bracket to engage the T-studs, and secure the bracket to the chassis with the provided M4 nut.
2. Install the provided ground wire.
The power supply replacement kit includes a 4-gauge (4 AWG) ground wire. Use the 4 AWG wire only.
a) Connect the ground cable to both grounding bolts on the ground bracket using the provided 1/4 inch nuts.
1 Ground caution label
2 Ground bracket
b) Connect the other end of the ground cable to an approved grounding point in your environment, such as a grounding
plate or unpainted area on the rack.
3. Remove the power cable from one of the AC PSUs.
4. Push the power supply release lever to the left, grasp the handle, and pull out the power supply.
3 Chassis
4 M4 nut
3 Ground cable
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Maintenance Procedures 96