H3C S7500 Series Ethernet Switches Compliance and Safety Manual

Compliance and Safety Manual

H3C S7500 Series Ethernet Switches Chapter 3 Safety Information

3-2

Safety Symbol Description

Electric shock symbol: To suggest a danger of high voltage

Microwave symbol: To suggest a high-intensity

electromagnetic field

Laser symbol: To suggest a strong laser beam

Safety precautions are classified into the following levels: Danger, Warning, Caution

and Note.

Danger: Suggests the possibility of a fatal accident or body injury if safety precautions

are ignored.

Warning: Suggests the possibility of a major accident or severe injury, or equipment

damage, if safety precautions are ignored.

Caution: Suggests the possibility of a severe injury, or that the equipment may be

damaged, if safety precautions are ignored.

Note: Suggests the possibility of an injury or equipment damage, if safety precautions

are ignored

3.1.2 General Requirements

In order to reduce the technically unavoidable residual risk to a minimum, it is

imperative to follow the rules below:

z Read all the instructions before operation.

z When installing the unit, always make the ground connection first and disconnect it

last.

z Do not block ventilation openings while the system is on, and keep at least 5 cm

distance from ventilation openings and walls or other things which may block the

openings.

z Never defeat the ground conductor or operate the equipment in the absence of a

suitably installed ground conductor. Contact the appropriate electrical inspection.

z The unit/system must be connected to the protection ground before operation

permanently. And the cross-section of protective earthing conductor shall be at

least 6mm

z For DC supplied model: Reinforced insulation must be provided to isolate 61-72V

source from the AC mains supply.

z Because the device has several power supplies, disconnect all of them to switch

off the device.

z When moving or lifting the chassis, please use the handles that are directly in the

chassis, or lift the chassis by grasping its lower edge, and it is not permitted to use