Examining The Installation Site; Temperature/Humidity - NEC QX-S5526P Installation Manual

Installation Guide
QX-S5500 Series Ethernet Switches

2.3 Examining the installation site

The QX-S5500 Series switches must be used indoors.
Mount your switch in a rack or on a workbench and make sure:
Adequate clearance is reserved at the air inlet and exhaust vents for ventilation.

The rack or workbench has a good ventilation system.

Identify the hot aisle and cold aisle at the installation site, and make sure ambient air

flows into the switch from the cold aisle and exhausts to the hot aisle.
Identify the airflow designs of neighboring devices, and prevent hot air flowing out of

the bottom device from entering the top device.
The rack is sturdy enough to support the switch and its accessories.

The rack 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.

2.4 Temperature/humidity

Maintain appropriate temperature and humidity in the equipment room.
Lasting high relative humidity can cause poor insulation, electricity creepage,

mechanical property change of materials, and metal corrosion.
Lasting low relative humidity can cause washer contraction and ESD and bring

problems including loose captive screws and circuit failure.
High temperature can accelerate the aging of insulation materials and significantly

lower the reliability and lifespan of the switch.
For the temperature and humidity requirements of different switch models, see "Overview".
Figure 2-1 Connecting the RJ45 connector
2-2
2 Preparing for installation