Lenovo ThinkSystem ST550 7X09, Руководство по обслуживанию

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System fans
• One processor: two fans (fan 1 and 2) or three fans (fan 1, 2, and 4)
• Two processors: three fans (fan 1, 2, and 3) or four fans (fan 1, 2, 3, and 4)
Notes:
• Fan 3 is required if the expansion drive cage is installed.
• Fan 4 is optional and is the redundant fan.
• If your server comes with only one processor, two or three system fans are adequate to provide proper
cooling. However, you must keep the location for fan 3 occupied by a fan filler to ensure proper airflow.
Power supplies
• One fixed 450-watt power supply
• One or two hot-swap power supplies for redundancy support
– 550-watt ac 80 PLUS Platinum
– 750-watt ac 80 PLUS Platinum
– 750-watt ac 80 PLUS Titanium
– 1100-watt ac 80 PLUS Platinum
Electrical input
• ac input (50 Hz to 60 Hz) required
– Input voltage low range:
– Minimum: 100 V ac
– Maximum: 127 V ac
– Input voltage high range:
– Minimum: 200 V ac
– Maximum: 240 V ac
Note: For server models with 750-watt ac 80 PLUS Titanium power supplies, the 100 V –127 V ac input
voltage is not supported.
CAUTION:
240 V dc input (input range: 180-300 V dc) is supported in China ONLY. Power supply with 240 V dc
input cannot support hot plugging power cord function. Before removing the power supply with dc
input, please turn off server or disconnect dc power sources at the breaker panel or by turning off the
power source. Then, remove the power cord.
Environment
The server is supported in the following environment:
• Air temperature:
– Operating:
– ASHRAE class A2: 10–35°C (50–95°F); when the altitude exceeds 900 m (2953 ft), the maximum
ambient temperature value decreases by 1°C (1.8°F) with every 300 m (984 ft) of altitude increase.
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ThinkSystem ST550 Maintenance Manual