Replacing the AC Power Supply on the SRX550 Services Gateway

You can replace the AC power supply on the SRX550 Services Gateway after disconnecting the AC power cord and removing the power supply already installed. However, redundant AC power supplies are hot-swappable. You need not power off the services gateway for replacing them.

Note: To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each power supply slot must contain either a power supply or a blank panel. If you remove a power supply, you must install a replacement power supply or a blank panel shortly after the removal.

This topic describes:

Disconnecting an AC Power Cord from the SRX550 Services Gateway

Warning: Before working on an AC-powered device or near power supplies, unplug the power cord.

To disconnect the AC power cord:

  1. Unplug the power cord from the power source receptacle.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to the SRX550 Services Gateway.
  3. Unplug the power cord from the appliance inlet on the power supply.

Removing an AC Power Supply from the SRX550 Services Gateway

Up to two power supplies can be located at the rear of the chassis on the right side. Each AC power supply weighs 2 lb (1.32 kg).

Caution: Do not leave a power supply slot empty for more than 30 minutes while the services gateway is operational. For proper airflow, the power supply must remain in the chassis, or a blank panel must be used in an empty slot.

Note: After powering off a power supply, wait at least 60 seconds before turning it back on.

To remove an AC power supply:

  1. Switch off the dedicated facility circuit breaker for the power supply, and remove the power cord from the AC power source. Follow the electrostatic discharge (ESD) and disconnection instructions for your site.
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to the SRX550 Services Gateway.
  3. Press the latch to the left of the power outlet (see Figure 27).
  4. After the power supply is unlatched, remove the power cord from the power supply.
  5. Pull the power supply straight out of the chassis.

Figure 27: Removing an AC Power Supply from the SRX550 Services Gateway

Removing an AC
Power Supply from the SRX550 Services Gateway

Installing an AC Power Supply on the SRX550 Services Gateway

To install an AC power supply:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to the SRX550 Services Gateway.
  2. Using both hands, slide the power supply straight into the chassis until the power supply is fully seated in the chassis slot. The power supply faceplate should be flush with any adjacent power supply faceplate (see Figure 28).
  3. Attach the power cord to the power supply.
  4. Route the power cord along the cable restraint toward the left or right corner of the chassis. If they are needed to hold the power cord in place, thread plastic cable ties, which you must provide, through the openings on the cable restraint.
  5. Attach the power cord to the AC power source, and switch on the dedicated facility circuit breaker for the power supply. Follow the ESD and connection instructions for your site. If the power supply is correctly installed and functioning normally, the POWER LED lights steadily.

Figure 28: Installing an AC Power Supply on the SRX550 Services Gateway

Installing an
AC Power Supply on the SRX550 Services Gateway

Connecting an AC Power Cord to the SRX550 Services Gateway

To connect the AC power cord:

  1. Locate a replacement power cord with the type of plug appropriate for your geographical location.
  2. Connect the power cord to the power supply, as shown in Figure 29.

    Figure 29: Connecting an AC Power Cord on the SRX550 Services Gateway

    Connecting an AC
Power Cord on the SRX550 Services Gateway
  3. Insert the power cord plug into an external AC power source receptacle.
  4. Route the power cord along the cable restraint toward the left or right corner of the chassis. If they are needed to hold the power cord in place, thread plastic cable ties, which you must provide, through the openings on the cable restraint.
  5. Verify that the power cord does not block the air exhaust and access to services gateway components, or drape where people could trip on it. If the power supply is correctly installed and functioning normally, the POWER LED lights steadily.

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