NEC 140He, User Manual

Page: 198 / 360

7-2
Cleaning the Server
For daily cleaning, wipe the external surfaces of the server with a dry soft cloth. Follow the procedure below if stains
remain on the surfaces:
IMPORTANT:
„
To avoid altering the material and colour of the server, do not use volatile solvents such
as thinner and benzene to clean the server.
„
The power receptacle, the cables, the connectors on the rear panel of server, and the
inside of the server must be kept dry. Do not moisten them with water.
1.
Make sure that the server is off-powered (the POWER/SLEEP lamp goes off).
2.
Unplug the power cord of the server from the power outlet.
3.
Wipe off dust from the power cord plug with a dry cloth.
4.
Soak a soft cloth in neutral detergent that is diluted with cold or lukewarm water, and squeeze it firmly.
5.
Rub off stains on the server with the cloth prepared in Step 4.
6.
Soak a soft cloth in water, squeeze it firmly, and wipe the server with it once again.
7.
Wipe the server with a dry cloth.
8.
Wipe off dust from the fan exhaust opening on the rear of the server with a dry cloth.
Cleaning the Interior
One of the most important items in a good maintenance program is regular and thorough cleaning of the interior of the
server, especially around the I/O board.
Dust build-up inside the server can lead to several problems. As dust acts as a thermal insulator, a build-up can prevent
proper system cooling. Excessive heat will shorten the life of server components. Also, dust may contain conductive or
corrosive materials that can cause short circuits or corrosion of electrical contacts.
How often you should clean the interior of the server depends on the environment in which it is located. For most office
environments, you probably should clean the server every 12 months. For more severe environments, clean the interior
every 6 months.
Cleaning the interior of the server entails powering off the server and removing the left side cover. You will need a
small vacuum cleaner (with plastic tipped nozzle and electrostatic protection), computer grade canned air, and a small
brush for cleaning the interior.
Follow the procedure below to clean the interior of the server.
WARNING
Unplug all power cords.
Unplug all power cords before performing any maintenance. Voltage is present inside the server
and display unit even after the power is turned off. All voltage is removed only when the power
cord is unplugged.
1.
Turn off the server and unplug all power cables.
2.
Remove the top cover. (See Chapter 9.)
3.
Use a small brush to loosen any dust and debris on the I/O board.
4.
Use computer grade canned air to blow dust off components on the I/O board.