Owners Manual

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4 Maintaining Power Supply and Cooling
Modules
The array can support two hot-swappable power supply and cooling modules. The array can operate only
temporarily with one module, but both modules must be present for long-term cooling of the array.
About AC Power Supplies
The PS Series array receives A/C power from two power supply and cooling modules (PSUs).
The fans that keep the array cool are integrated into the power supply modules and cannot be replaced
separately. If a fan fails, you must replace the entire power supply module.
The PS4100 has two 700 Watt PSUs. Each 700W power supply has two cooling fans.
Power Supply LEDs
The power supply and cooling modules have LEDs that indicate their status.
See Figure 21 and Table 7.
Figure 21 700W Power Supply LEDs