About this task
This procedure may require a Cray contracted or customer contracted electrician to complete lockout/tagout
procedures or disconnect facility power. Allow time in the preventive maintenance schedule for this requirement.
Procedure
1.
CAUTION:
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Heavy equipment
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The power supply rack and the horizontal bus bar assembly weigh 118 lbs (54 kg). The power
supply rack must be removed with the assistance of a qualified personnel and using proper lifting
techniques. Failure to do so may result in personal injury or equipment damage.
With the assistance of qualified personnel, place the power supply rack near the compute rack to reconnect
cables.
2. Reconnect the control cables (6) and power cables (6) to the back of the power supply rack.
3. Position the back of the power supply rack assembly onto the support rails, and slide the power supply rack
into the cabinet. Pull cables back through the grommet holes while pushing assembly in to prevent them from
being smashed and possibly damaged.
4. Connect the control cables to the environmental distribution board.
5. Reinstall the T30 Torx screws (8) and torque to 95 in-lbs. to secure the red horizontal bus bar to the vertical
bus bar. Have an authorized individual verify that the torque value is correct and paint the hardware with
torque marker paint.
6. Reinstall the T30 Torx screws (8) and torque to 95 in-lbs. to secure the black horizontal bus bar to the vertical
bus bar. Have an authorized individual verify that the torque value is correct and paint the hardware with
torque marker paint.
System Cabinet Procedures
49