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Routine Maintenance Procedures for EX9253 Switches


For optimum performance of an EX9253 switch, perform preventive maintenance procedures.


  • Inspect the installation site for moisture, loose wires or cables, and excessive dust. Make sure that airflow is unobstructed around the switch and into the air intake vents.

  • Check the status-reporting devices on the switch—alarms and LEDs.

  • Inspect the air filter and fan tray, replacing the air filter every 6 months for optimum cooling system performance. Do not run the switch for more than a few minutes without the air filter or fan trays in place.