3 RU SSPA Chassis Operations Manual
205356 REV T
69
The exhaust fans on the rear panel are each secured by (4) captive thumb screws. To
remove, loosen the screws and carefully remove the fan assembly from the chassis.
Unplug the fan power cord from the connector. See
Figures 3-4
and
3-5
.
3.1.1.1 Fan and Heatsink Maintenance
It is recommended that the cooling system of the SSPA be checked at least once per
month. If the environment in the area where the amplifier is being operated produces a
large amount of dust and debris, this check should be performed more frequently.
The intake fans of the amplifier can pull airborne debris into the enclosure, and fill the
spaces between the heatsink fins. See
Figure 3-6
. As this debris builds up inside the
amplifier, the airflow which is important in cooling the amplifier is impinged.
Blockage of the heatsink will cause the internal temperature of the amplifier module to
rise above what is considered as normal operating conditions. While the amplifiers
have thermal protection, long periods of elevated temperatures could reduce amplifier
life.
The front panel menu can be used to check the amplifier base plate temperature. The
base plate temperature should normally not exceed 75 °C. To view the SSPA base
plate temperature, press the
Main Menu
key and select
1.SysInfo
and press the
Enter
key; press the
Down Arrow
(
▼
) key seven (7) times. If the base plate temperature
exceeds 75 °C, it is one indicator that the system’s airflow requires maintenance.
Note
: The amplifier’s temperature alarm threshold is set to 85 °C. If the
base plate temperature reaches 85°C, the front panel Temp Fault LED
will activate. If the temperature reaches 90°C, the unit will shut down.
The heatsink fins should be visually inspected for excessive dirt and debris build-up. If
it appears there is excessive debris in the fans or heatsink; the fan tray can be re-
moved for easy cleaning.
1.Using a Philips head screw driver, loosen the thumbscrews holding the front
fan tray in place.
2.Remove the front panel fan tray. See
Figure 3-2
.
3.Unplug the fan power cord from the power pole connector. See
Figure 3-3
.
4.Use the shop vacuum to collect all dust and debris.
Figure 3-6: Example of Dust Blocking Heatsink Fins
Содержание HPAC-2005
Страница 18: ...18 205356 REV T 3 RU SSPA Chassis Operations Manual THIS PAGE LEFT INTENTIONALLY BLANK ...
Страница 64: ...64 205356 REV T 3 RU SSPA Chassis Operations Manual THIS PAGE LEFT INTENTIONALLY BLANK ...
Страница 100: ...100 205356 REV T 3 RU SSPA Chassis Operations Manual THIS PAGE LEFT INTENTIONALLY BLANK ...
Страница 144: ...144 205356 REV T 3 RU SSPA Chassis Operations Manual THIS PAGE LEFT INTENTIONALLY BLANK ...
Страница 156: ...156 205356 REV T 3 RU SSPA Chassis Operations Manual THIS PAGE LEFT INTENTIONALLY BLANK ...