Dell S3048-ON EMC PowerSwitch Installation Guide March 2022 - Page 25

7 Fans The S3048-ON comes from the factory with one PSU and three fan modules installed in the chassis. The fan modules and the power supplies, which have integrated fans, are hot-swappable. NOTE: To run the switch, all slots must have operating fan units. If you do not install a module in each slot either as part of the PSU or as an independent fan module, the switch shuts down in one minute. In addition to the power supply modules, you can order and install fan modules separately. The S3048-ON 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 S3048-ON issues an alarm. You must correct the mismatched airflow direction. ● Normal-airflow is from the I/O panel to the PSU. ● Reversed-airflow is from the PSU to the I/O panel. All fans and PSUs in a configuration must be in the same airflow direction. 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 fans to accurately determine replacement intervals. Topics: • Components • Fan module installation • Fan module replacement • After installing the switch Components The following are the S3048-ON fan components. ● S3048-ON Fan module ● S3048-ON Fan module-Reverse flow Figure 13. S3048-ON fan modules 1. Fan modules Fans 25