3Com 4800G Getting Started Guide - Page 25

Preparating to Install the Switch, Safety Precautions, Installation Site, Temperature/Humidity

Get 3Com 4800G - Switch PDF manuals and user guides
UPC - 662705534183
View all 3Com 4800G manuals
Add to My Manuals
Save this manual to your list of manuals

Page 25 highlights

2 PREPARATING TO INSTALL THE SWITCH Safety Precautions To avoid any device impairment and bodily injury caused by improper use, observe these rules: ■ Before cleaning the switch, unplug the power plug of the switch first. Do not clean the switch with wet cloth or liquid. ■ Do not place the switch near water or in a damp environment. Prevent water or moisture from entering the switch chassis. ■ Do not place the switch on an unstable case or desk. The switch might be damaged severely in case of a fall. ■ Ensure proper ventilation of the equipment room and keep the ventilation vents of the switch free of obstruction. ■ Connect the yellow-green protection grounding cable before power-on. ■ Make sure that the operating voltage is in the range labeled on the switch. ■ Do not open the chassis to avoid electrical shocks when the switch is operating or just when the switch is powered off. ■ When replacing interface modules, wear ESD-preventive gloves to avoid damaging the modules. Installation Site The Switch 4800G must be used indoors. You can mount the switch in a rack or on a workbench, but make sure: ■ Adequate clearance is reserved at the air inlet/exhaust vents for ventilation. ■ The rack or workbench has a good ventilation system. ■ The rack is sturdy enough to support the device and its accessories. ■ The rack or workbench is well earthed. To ensure normal operation and long service life of your switch, install it in an environment that meets the requirements described in the following subsections. Temperature/Humidity You must maintain a proper temperature and humidity in the equipment room. Long-term high humidity may lead to bad insulation, electricity leakage, mechanical property changes, and metal corrosion. However, if the relative humidity is too low, captive screws may become loose as the result of contraction of insulation washers and static electricity may be produced in a dry environment to jeopardize the circuits on the device. A high temperature is the most undesirable condition, because it accelerates the aging of insulation materials and thus significantly lowers reliability and service life of the switch.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
2
P
REPARATING
TO
I
NSTALL
THE
S
WITCH
Safety Precautions
To avoid any device impairment and bodily injury caused by improper use, observe
these rules:
■
Before cleaning the switch, unplug the power plug of the switch first. Do not
clean the switch with wet cloth or liquid.
■
Do not place the switch near water or in a damp environment. Prevent water or
moisture from entering the switch chassis.
■
Do not place the switch on an unstable case or desk. The switch might be
damaged severely in case of a fall.
■
Ensure proper ventilation of the equipment room and keep the ventilation
vents of the switch free of obstruction.
■
Connect the yellow-green protection grounding cable before power-on.
■
Make sure that the operating voltage is in the range labeled on the switch.
■
Do not open the chassis to avoid electrical shocks when the switch is operating
or just when the switch is powered off.
■
When replacing interface modules, wear ESD-preventive gloves to avoid
damaging the modules.
Installation Site
The Switch 4800G must be used indoors. You can mount the switch in a rack or
on a workbench, but make sure:
■
Adequate clearance is reserved at the air inlet/exhaust vents for ventilation.
■
The rack or workbench has a good ventilation system.
■
The rack is sturdy enough to support the device and its accessories.
■
The rack or workbench is well earthed.
To ensure normal operation and long service life of your switch, install it in an
environment that meets the requirements described in the following subsections.
Temperature/Humidity
You must maintain a proper temperature and humidity in the equipment room.
Long-term high humidity may lead to bad insulation, electricity leakage,
mechanical property changes, and metal corrosion. However, if the relative
humidity is too low, captive screws may become loose as the result of contraction
of insulation washers and static electricity may be produced in a dry environment
to jeopardize the circuits on the device. A high temperature is the most
undesirable condition, because it accelerates the aging of insulation materials and
thus significantly lowers reliability and service life of the switch.