HP Performance Optimized Datacenter 20c User Guide - China

Power up procedure 72
Cold weather power up checklist
Site electrical
Open (verify open) all site POD feeder supply breakers.
POD mechanical
Open (verify open) POD chilled water return butterfly isolation valve.
POD electrical
• Hot aisle—Verify that all IT power drop box breakers on the power tap boxes are open.
• Cold aisle
a. Close all breakers and fuses within the control cabinet.
b. Close and latch the ECS cabinet with the supplied T-handle.
c. Position the EPO system (on page 15) to Armed (White) or Bypass (Green).
d. Verify that all EPO activation buttons are in the reset position (not depressed).
• IT critical power feed cabinet
a. Close all fuses in power cabinets A and B.
b. Close all non-spare breakers in power cabinets A and B.
c. Close and lock both house power cabinet doors.
Cold weather power up procedure
Perform the following procedures in the exact order in which they are listed.
Site electrical
Close all POD site power feeder breakers and monitor for any effects that are not standard.
Site chilled water
1. Open the POD supply chilled water isolation valve.
2. If necessary, vent the air from the chilled water return header.
3. Open the POD return chilled water isolation valve.
4. Verify that audible flow noises are present.
IMPORTANT: To allow the POD ambient temperature to be raised in a controlled manner, open
the chilled water supply and return isolation valves to enable a flow of 909 lpm (120 gpm) and
a temperature of 13ºC to 24ºC (55ºF to 75ºF) to flow through the heat exchangers and allow the
circulation fans to bring the ambient temperature to >10ºC (50ºF).
• Portable heaters can be used as supplemental heat to uniformly disperse heat throughout the
POD.
• Electric portable heaters must be powered from an outside source.