Equipment Ventilation - Motorola MTR2000 T5544 Instruction / Field Service Manual

Equipment Ventilation

Mounting the MTR2000 in
a Cabinet
STOP
IMPORTANT
Mounting the MTR2000 in
a Rack
CAUTION
68P81096E37-N
06/28/05
The high-power (100/75W) stations are equipped with cooling fans that are used
to provided forced convection cooling.
When planning the installation, observe the following ventilation guidelines:
• Customer-supplied cabinets must be equipped with ventilation slots or open-
ings in the front (for air entry) and back or side panels (for air to exit). If sev-
eral stations are installed in a single cabinet, be sure ventilation openings
surround each station to allow for adequate cooling.
• All cabinets must have a least 15cm (6in) of open space between the air vents
and any wall or other cabinets. This allows adequate air flow.
• When multiple cabinets (each equipped with several stations) are installed in
an enclosed area, make sure the temperature within each cabinet does not ex-
ceed the recommended / maximum operating temperature of +60°C
(+140°F). It may be necessary to have air conditioning or other climate con-
trol equipment installed to satisfy the environmental requirements.
High Power Stations: The mounting of only ONE STATION PER CABINET
is recommended. More than one station per cabinet will result in degradation
of thermal specifications at high ambient temperatures.
Low Power Stations: In order to maintain thermal specification of –30°C (–
22°F) to +60°C (+140°F), the low power stations must be mounted in a cabi-
net with additional cooling. A single low power station mounted in a cabinet
without additional cooling, will operate at thermal specification performance
of –30°C (–22°F) to +54°C (+129°F).
Appropriate precautions should be taken to ensure that station ambient tem-
perature does not exceed +60°C (+140°F).
If multiple stations are required, AND THERMAL SPECIFICATION DEG-
RADATION IS ACCEPTABLE, the following is recommended when no cab-
inet fans are used. Up to three stations can be mounted in a 76.2cm (30in) or
larger cabinet with two rack units of spacing between each station. This will
result in thermal specification performance of
(+104°F).
When mounting multiple stations in a rack, ensure that the minimum spacing
between stations is:
• 3 rack units (13.3cm or 5.25in) for VHF and UHF low power stations,
and 350MHz stations.
!
• 1 rack unit (4.4cm or 1.75in) for VHF and UHF high power stations,
800MHz stations, and 900MHz stations.
This spacing needs to be complied with to ensure that the thermal rating of
the station is not exceeded.
Installation
–30°C (–22°F) to +40°C
3