Compliance and Safety Manual
H3C VG 20-16/20-32 Voice Gateway
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 equipment damage, 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
Do not place the chassis near water or any moist area. Prevent water or moisture
from entering the chassis.
z
Keep the chassis far away from the heat source.
z
Do not pile up the H3C 20 series voice gateway, so as to ensure normal heat
dissipation.
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 4mm
2
z
The device applies to TN power systems.
