Humidity, Temperature, and Cleanness

HUAWEI USG6000E Series Hardware Guide

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This section describes the requirements for the humidity, temperature, and cleanness of the equipment room. To ensure the stability and life cycle of the USG and its components, check that the equipment room meets the requirements.

Ensure that there is no explosive, conductive, magnetic, or corrosive dust or debris in the equipment room. Dust that settle on the device may cause electrostatic adsorption, resulting in poor contact of the metal socket connectors and metal contacts. This shortens the life cycle of the device and causes faults.

In addition to dust and debris, toxic gases, such as SO₂, H₂S, and NH₃ must be cleaned out of the equipment room.

Table A-6 Requirements for humidity, temperature, and cleanness in the equipment room

Item	Description
Cleanness	Dust particle	Maximum diameter (μm)	0.05		1		3		5
	Dust particle	Maximum density (number of dust particles per cubic meter)	1.4 x 10⁷		7 x 10⁵		2.4 x 10⁵		1.3 x 10⁵
	Noxious gas density	Gas	SO₂	H₂S	CI₂	HCl	HF	NH₃	O₃	NO₂
		Average (mg/m³)	0.3	0.1	0.1	0.1	0.01	1.0	0.05	0.5
		Maximum (mg/m³)	1.0	0.5	0.3	0.5	0.03	3.0	0.1	1.0
Humidity and temperature	Temperature	Long-term operating temperature	Without hard disk: 0 °C to 45 °C With hard disk(s): 5 °C to 40 °C
	Temperature	Short-term operating temperature	Without hard disk: -5 °C to 55 °C With hard disk(s): 5 °C to 40 °C
	Operating humidity		Without hard disk: 5% RH to 95% RH, non-condensing With hard disk(s): 5% RH to 90% RH, non-condensing
	Storage humidity		Without hard disk: 5% RH to 95% RH, non-condensing With hard disk(s): 5% RH to 90% RH, non-condensing

To meet the requirements listed in Table A-6, take the following measures in the equipment room:

Install a permanent temperature controller regardless of the climate conditions.
In dry regions, use humidifiers or regularly mop the floor to ensure proper humidity in the equipment room.
In regions with high humidity, use dehumidifiers.
Use dust-free materials for the floor, walls, and ceilings.
Screen exterior doors and windows. The external windows of the equipment room should be sealed for anti-dust purposes.
Clean the equipment room and air filters on the devices once every three months.
Wear the ESD uniform, ESD gloves, and ESD shoes before entering the equipment room.
Locate the equipment room far away from areas with dense corrosive gases, such as chemical plants.
The air intake vent of the equipment room must not face any pollution source.
Place batteries in a different room from the devices.
Invite professionals to measure the temperature, humidity, and other factors periodically.

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Updated: 2023-09-07

Document ID: EDOC1100069149

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