AC Power Supply for a QFX3500 Device

The power supplies in QFX3500 devices (see Figure 1) are hot-removable and hot-insertable field-replaceable units (FRUs) that you can install on the front panel without powering off the device or disrupting the switching function.

The AC power supply in QFX3500 devices is 650 W.

Figure 1: AC Power Supply in QFX3500 Devices

The power supply provides FRU-side-to-port-side or port-side-to-FRU-side airflow depending on the model you purchase. The power supplies have labels and arrows on the handles that depict the direction of airflow (see Figure 2). The label AFI denotes FRU-side-to-port-side airflow, AFO denotes port-side-to FRU-side airflow.

Figure 2: Label Identifying Airflow Direction on Power Supply Handle

Caution: Verify that the direction of the arrow on the power supply handle matches the direction of airflow in the chassis. Ensure that each power supply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS will raise an alarm and the status (OK/!) LED will blink amber.

Table 1 shows the different power supplies and their direction of airflow.

To avoid electrical injury, carefully follow instructions in Installing a Power Supply in a QFX3500 Device and Removing a Power Supply from a QFX3500 Device.