Particulate Contamination - Lenovo ThinkSystem SR250 Setup Manual

Table 1. Server Specifications (continued)
Specification
Electrical input
Environment

Particulate contamination

Attention: Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature might pose a risk to the
device that is described in this document.
Risks that are posed by the presence of excessive particulate levels or concentrations of harmful gases
include damage that might cause the device to malfunction or cease functioning altogether. This
specification sets forth limits for particulates and gases that are intended to avoid such damage. The limits
must not be viewed or used as definitive limits, because numerous other factors, such as temperature or
moisture content of the air, can influence the impact of particulates or environmental corrosives and gaseous
contaminant transfer. In the absence of specific limits that are set forth in this document, you must
implement practices that maintain particulate and gas levels that are consistent with the protection of human
health and safety. If Lenovo determines that the levels of particulates or gases in your environment have
caused damage to the device, Lenovo may condition provision of repair or replacement of devices or parts
on implementation of appropriate remedial measures to mitigate such environmental contamination.
Implementation of such remedial measures is a customer responsibility.
ThinkSystem SR250 Setup Guide
8
Description
Sine-wave input (50–60 Hz) required
• 300-Watt power supply:
100-127 V ac /200-240 V ac, 4/2A
• 450-Watt power supply:
100-127 V ac /200-240 V ac, 5.8/2.9A
The ThinkSystem SR250 complies with ASHRAE class A2 specifications. System
performance may be impacted when operating temperature is outside ASHRAE A2
specification or fan failed condition.
The ThinkSystem SR250 is supported in the following environment:
• Air temperature:
– Server on:
– (ASHRAE Class A2): 10°C to 35°C (50°F to 95°F); decrease the maximum
ambient temperature by 1°C for every 300 m (984 ft) increase in altitude
above 900 m (2,953 ft).
– Sever off: 5°C to 45°C (41°F to 113°F)
– Shipping/storage: -40 - 60°C (-40 - 140°F)
• Maximum altitude: 3050 m (10 000 ft)
• Relative Humidity (non-condensing):
– Operating:
– ASHRAE Class A2: 8% - 80%, maximum dew point : 21°C (70°F)
– Shipment/storage: 8% to 90%
• Particulate contamination
Attention: Airborne particulates and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature
might pose a risk to the server. For information about the limits for particulates and
gases, see "Particulate contamination" in ThinkSystem SR250 Maintenance
Manual.