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Chapter 2: Hardware Installation
b. The subsystem is designed to operate in an environment where
the ambient temperature around the chassis must not exceed
40°C.
c. The openings on the enclosure are for air circulation and hence
the ventilation openings should never be obstructed.
d. Proper grounding, over-current protection, and stability
features should be provided with the rack cabinet into which
the subsystem is mounted.
5. Operate the subsystem in an environment with least humidity.
6. Lay the subsystem on a reliable surface when servicing individual
modules. A drop or fall can cause injury.
7. Make sure the voltage of the power source is within the rated values as
indicated by the label attached to the power supplies before connecting
the subsystem to the power source. You may also refer to the Appendix
A of this manual for technical details.
8. Airflow considerations: The subsystem requires an airflow clearance
especially on the front and the rear sides. For proper ventilation, a
minimum of 2.5cm is required between the front of the enclosure and
rack cover; a minimum of 5cm is required between the enclosure and
end of the rack cabinet.
9. Handle the system modules by the retention screws, eject levers, or the
modules’ metal frames/faceplates only. Avoid touching the PCB boards
and connector pins.
10. None of the covers or replaceable modules should be removed in order
to maintain compliance with safety, emission, or thermal requirements.
11. If the subsystem is going to be left unused for a long time, disconnect
the subsystem from mains to avoid damages by transient over-voltage.
12. Never pour any liquid into ventilation openings; this could cause fire or
electrical shock.
13. Never open the subsystem top cover. For safety reasons, only qualified
service personnel could access the interior of the chassis.
14. Always secure every enclosure module by its retaining screws or make
sure it is held in place by its latches or hand screws.
15. Always make sure the subsystem has a safe electrical earth connection
via power cords or chassis ground by the rack cabinet.
16. Be sure that the rack cabinet in which the subsystem chassis is to be
installed provides sufficient ventilation channels and airflow circulation
around the subsystem.
Safety Precautions
2-3