H3C S12500 Installation Instructions Manual

Also see for S12500 Series: Installation guide Quick start guide Software Upgrade Configuration Examples Interface configuration guide

Contents

2-4Temperature RequirementsTo ensure the normal operation of a switch, the temperature in the room should be maintained within aproper range. Table 2-1 describes temperature requirements.Table 2-1 Temperature requirementsTemperature RangeOperating temperature Long term: 0°C to 40°C (32°F to 104°F)Two hours: –10°C to +50°C (14°F to 122°F)Storage temperature –40°C to +70°C (–40°F to 158°F)After the switch is moved to a high-temperature location, if condensate appears on the switch, you mustdry the switch before power-on to avoid damaging interior components due to short circuit.Humidity RequirementsTo ensure the normal operation of a switch, the humidity in the equipment room should be maintainedwithin a proper range. Table 2-2 describes humidity requirements.Table 2-2 Humidity requirementsHumidity RangeOperating humidity (noncondensing) 5% to 90%Storage humidity (noncondensing) 5% to 95%Long-lasting high humidity in the equipment room is prone to poor insulation or even leakage of theinsulating material. Sometimes, the mechanical performance deterioration, the rustiness and corrosionof some metal parts are also more likely to occur.If the relative humidity is too low, the captive screws may become loose due to the insulation washercontraction. Meanwhile, the electrostatic is likely to be produced in the dry environment, which willjeopardize the CMOS circuit of the switch.Cleanness RequirementsDust is a hazard to the operating safety of the switch. The indoor dust accumulated on the chassis cancause electrostatic adsorption, which may result in the poor contact of the connector or metal contactpoint. This happens more frequently when indoor relative humidity is low, which will not only shorten theservice life of the switch, but also cause communication failure.The required specifications on dust content and particle diameter in an equipment room are shown inthe following table.