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Residue from a previous leak (fig. 6). Be on the lookout for such (fresh) leaks. Fluids of ANY colour are an issue!:
(Figure 6)
(Figure 7)
Check Clean Mats at the entrances to the data center. When excessively dirty (as pictured above, fig. 7 ), please remove and discard the top layer, revealing a fresh layer underneath. This helps to prevent dirt from being tracked into the datacenter, and ultimately, into the equipment.
Datacenter specific considerations:
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In addition to the general concerns outlined above, when performing a walk-through of MATH G190 and G109, please also inspect the Cooling Distribution Units (CDUs) located in each datacenter for any alarms (fig. 7):
(Figure 78)
CDUs are labeled and shown in approximate location in red. Green Xs indicate doors that should be checked to verify they are closed and secured. Yellow stars indicate doorways that should remain open for ventilation.
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Coolcentric
Without PDU (fig. 89):
(Figure 89)
Two Coolcentric CDUs with PDU (fig. 910):
(Figure 910)
This CDU (fig. 1011) is experiencing an alarm (fig. 1112, circled), with close-up view (fig. 1213):
(Figure 1011)
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(Figure 1112) (Figure 1213)
CoolIT
(Figure 1314)
CoolIT CDUs are equipped with touchscreens that may go into screen-saver mode. Lightly touch the screen to check its status.
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This CDU is experiencing an alarm (fig. 1415):
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(Figure 1415)
Also check the following spaces:
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