Service manual

2-2 Installation: Pre-Installation Considerations
2.1.2 Environmental Conditions at Intended Installation Site
IMPORTANT: If the base station/repeater is to be installed in an environment which is
unusually dusty or dirty (and so does not meet the air quality
requirements), the air used to cool the base station/repeater modules
must be treated using appropriate filtering devices. Dust or dirt
accumulating on the internal circuit boards and modules is not easily
removed, and can cause such malfunctions as overheating and
intermittent electrical connections.
The base station/repeater may be installed in a suitable, restricted access, indoor enclosure in any
location suitable for electronic communications equipment, provided that the environmental
conditions do not exceed the equipment specifications for temperature, humidity, and air quality.
These are:
• Operating Temperature Range
-30°C (-22°F) to +60°C (+140°F)
This is the temperature measured in close proximity to the base station/repeater. For example,
if the base station/repeater is mounted in a cabinet, the temperature within the cabinet would be
measured.
• Humidity
Not to exceed 95% relative humidity @ 50°C (122°F).
• Air Quality
For equipment operating in an environmentally controlled environment with the base station(s)/
repeater(s) rack mounted, the airborne particulates level must not exceed 25 µg/m3.
For equipment operating in an area which is not environmentally controlled (base station(s)/
repeater(s) cabinet mounted), the airborne particulates level must not exceed 90 µg/m3.