Dell PowerSwitch S4820T Installing the S4820T System - Page 35

Install Fans, Fan Module 2

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6 Install Fans The S4820T comes from the factory with one power supply unit (PSU) and two fan modules installed in the chassis, as shown in the following figure. The fan modules and the integrated fan-power supply are hot-swappable. Figure 11. S4820T Fan Modules 1. Fan Module 1 3. Grab Handles 2. Fan Module 2 NOTE: To run the system, both slots must have operating fan units. If a module is not installed in each slot (either as part of the PSU or as an independent fan module), the system shuts down in one minute. In addition to the integrated fan/power supply modules, you can order and install fan modules separately. The S4820T supports two airflow direction options. Do not mix airflow types in a chassis; you can use only a single airflow direction in a chassis. If the airflow directions are mismatched, the S4820T powers down in one minute. • Normal - airflow is from the I/O panel to the PSU • Reversed - airflow is from the PSU to the I/O panel Environmental factors can decrease the amount of time required between fan replacements. Check the environmental factors regularly. An increase in temperature and/or particulate matter in the air might affect performance (for example, new equipment installation). CAUTION: Check the fans at six-month intervals and replace them as necessary. Regularly monitor the speeds of the cooling fans in order to accurately determine replacement intervals. Install Fans 35

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6
Install Fans
The S4820T comes from the factory with one power supply unit (PSU) and two fan modules installed in
the chassis, as shown in the following figure. The fan modules and the integrated fan-power supply are
hot-swappable.
Figure 11. S4820T Fan Modules
1.
Fan Module 1
2.
Fan Module 2
3.
Grab Handles
NOTE:
To run the system, both slots must have operating fan units. If a module is not installed in
each slot (either as part of the PSU or as an independent fan module), the system shuts down in one
minute.
In addition to the integrated fan/power supply modules, you can order and install fan modules separately.
The S4820T supports two airflow direction options. Do not mix airflow types in a chassis; you can use
only a single airflow direction in a chassis. If the airflow directions are mismatched, the S4820T powers
down in one minute.
•
Normal — airflow is from the I/O panel to the PSU
•
Reversed — airflow is from the PSU to the I/O panel
Environmental factors can decrease the amount of time required between fan replacements. Check the
environmental factors regularly. An increase in temperature and/or particulate matter in the air might
affect performance (for example, new equipment installation).
CAUTION: Check the fans at six-month intervals and replace them as necessary. Regularly
monitor the speeds of the cooling fans in order to accurately determine replacement intervals.
Install Fans
35