Replacing Power System Components on the SRX1400 Services Gateway

This topic includes the following sections:

Replacing an AC Power Supply on the SRX1400 Services Gateway

To replace an AC power supply:

  1. 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 SRX1400 Services Gateway.
  2. Remove the power cord from the power supply.
  3. Push the tab on the left edge of the power supply to the right.
  4. Pull the power supply straight out of the chassis using the provided handle. Use one hand to support underneath the supply as you remove it. See Figure 47.

    Figure 47: Removing an AC Power Supply from the SRX1400 Services Gateway

    Removing an AC Power
Supply from the SRX1400 Services Gateway
  5. Orient the replacement power supply so that the tab is on the left side.
  6. Using both hands, slide the replacement power supply straight into the chassis until the power supply is fully seated in the chassis slot. Make sure the tab on the left edge of the power supply clicks into place. The power supply faceplate should be flush with any adjacent power supply faceplate. See Figure 48.

    Figure 48: Installing an AC Power Supply in the SRX1400 Services Gateway

    Installing an AC
Power Supply in the SRX1400 Services Gateway

    Caution: Do not mix AC and DC power supplies within the same services gateway. Damage to the device might occur.

    Note: Be sure to have the power supply oriented correctly. The tab must be on the left and click into place when fully seated. If the power supply does not insert easily or does not become flush with the chassis, you might have the power supply upside down.

  7. Attach the power cord to the power supply. If the power supply is correctly installed and functioning normally, the power supply powers up immediately.

    Note: Press the Power button if the device does not power on automatically. See Powering On the SRX1400 Services Gateway for more details.

    Note: The Power button state is maintained in the Routing Engine. If the Routing Engine is replaced, the state of the new Routing Engine determines whether the device powers up automatically or needs the Power button to be pressed to power up.

    If the device was powered down using the Power button, and the Routing Engine was subsequently transferred to another device, the new device will power up only when the power button is pressed.

    Note: You must have a SYSIOC and a Routing Engine installed in the services gateway for the power supply to turn on automatically.

    Note: If you are moving this power supply from one slot to another, wait at least 60 seconds before inserting it into the new slot.

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.

Replacing AC Power Supply Cables on the SRX1400 Services Gateway

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

To replace an AC power supply cord:

  1. Unplug the power cord from the power source receptacle.
  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 SRX1400 Services Gateway.
  3. Unplug the power cord from the appliance inlet on the power supply.
  4. Locate a replacement C13 power cord with the type of plug appropriate for your geographical location.
  5. Insert the power cord plug into an external AC power source receptacle.
  6. Connect the power cord to the power supply. See Figure 49.

    Figure 49: Connecting AC Power Supply Cables on the SRX1400 Services Gateway

    Connecting AC Power
Supply Cables on the SRX1400 Services Gateway
  7. Verify that the power cord does not block the air exhaust and access to services gateway components, or it does not cause a tripping hazard.
  8. If the power supply is correctly installed and functioning normally, the supply automatically powers up.

Replacing a DC Power Supply on the SRX1400 Services Gateway

To replace a DC power supply:

  1. Switch off the dedicated facility circuit breaker for the power supply being removed. Follow your site's procedures for ESD.
  2. Make sure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cables might become active during the removal process.
  3. 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 SRX1400 Services Gateway.
  4. Remove the clear plastic cover protecting the terminal studs on the faceplate.
  5. Remove the screws and washers from the terminals. Use a number-2 Phillips screwdriver to loosen and remove the screws.
  6. Remove the cable lugs from the terminals.
  7. Carefully move the power cables out of the way.
  8. Push the tab on the left edge of the power supply to the right.
  9. Pull the power supply straight out of the chassis. See figure Figure 50.

    Figure 50: Removing a DC Power Supply from the SRX1400 Services Gateway

     Removing a DC Power Supply
from the SRX1400 Services Gateway
  10. Orient the replacement power supply so that the tab is on the left side, as shown in Figure 51.

    Figure 51: Installing a DC Power Supply on the SRX1400 Services Gateway

    Installing a DC Power Supply
on the SRX1400 Services Gateway
  11. Using both hands, slide the replacement power supply straight into the chassis until the power supply is fully seated in the chassis slot. Make sure the tab on the left edge of the power supply clicks into place. The power supply faceplate should be flush with any adjacent power supply faceplate.

    Note: Be sure to have the power supply oriented correctly. The tab must be on the left and click into place when fully seated. If the power supply does not insert easily or does not become flush with the chassis, you might have the power supply upside down.

  12. Remove the clear plastic cover protecting the terminal studs on the faceplate.
  13. Remove the screws and washers from the terminals.
  14. Secure each power cable lug to the terminal studs, first with the washer, then with the screw. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each screw.
    1. Secure each positive (+) DC source power cable lug to a RTN (return) terminal.
    2. Secure each negative (–) DC source power cable lug to a -48V (input) terminal.

    Figure 52 shows typical DC source cabling to the SRX1400 Services Gateway.

    Figure 52: Typical DC Source Cabling to the SRX1400 Services Gateway

    Typical DC Source
Cabling to the SRX1400 Services Gateway

    Caution: You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminal studs on each power supply.

    Note: The DC power supply in slot PEM0 must be powered by dedicated power feeds derived from feed A, and the DC power supply in slot PEM1 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system.

    Note: For information about connecting to DC power sources, see SRX1400 Services Gateway DC Power Supply Electrical Specifications.

  15. Replace the clear plastic cover over the terminal studs on the faceplate.
  16. Verify that the power cabling is correct, that the cables are not touching or blocking access to services gateway components, and it does not cause a tripping hazard. If the power supply is correctly installed and functioning normally, the LED on the power supply lights green steadily.

    Caution: Do not mix AC and DC power supplies within the same services gateway. Damage to the device might occur.

    Note: You must have a SYSIOC and a Routing Engine installed in the services gateway for the power supply to turn on automatically.

    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.

Replacing DC Power Supply Cables on the SRX1400 Services Gateway

To replace a power supply cable connected to a DC power supply:

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  2. Switch off the external circuit breakers for all the cables attached to the power supply. Make sure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cables might become active during the removal process.
  3. Remove the power cable from the DC power source.
  4. 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 SRX1400 Services Gateway.
  5. Make sure the cable is not touching or in the way of any device components, and that it does not cause a tripping hazard.
  6. Replace the clear plastic cover over the terminal studs on the faceplate.
  7. Attach the power cable to the DC power source.
  8. Verify that the DC source power cabling is correct. Observe the status of the LED on the power supply. If the power cable is correctly installed and the power supply is functioning normally, the LED on the power supply lights green steadily.

Replacing the Power Supply Air Filter on the SRX1400 Services Gateway

The SRX1400 Services Gateway power supply has one air filter located in the front of the power supply. The SRX1400 power supply air filter supports hot-swappable functionality.

Caution: Do not run the services gateway for more than a few minutes without the air filter in place.

Note: You can order an air filter kit separately. Contact your Juniper Networks customer service representative for more information. The air filter kit includes a cooling system air filter and four power supply air filters.

To replace the air filter:

  1. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the SRX1400 chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to the SRX1400 Services Gateway.

    Figure 53 shows the SRX1400 Services Gateway power supply air filter.

    Figure 53: SRX1400 Power Supply Air Filter

    SRX1400 Power
Supply Air Filter

    Table 38 lists the SRX1400 services gateway power supply air filter components.

    Table 38: Power Supply Air Filter Components

    Number

    Power Supply Air Filter Components

    1

    Removable self-tap screws

    2

    Plastic holder

    3

    Air Filter

    The numbers in Figure 53 on page 10 correspond to the numbers in Table 38.

  2. Using a number-2 Phillips screwdriver, loosen the screws (removable self-tap screws, no. 3) on the power supply air filter plastic holder.
  3. Remove the plastic holder of the power supply air filter.
  4. Slide the air filter out of the plastic holder and dispose the air filter.
  5. Locate the up arrow on the replacement filter to ensure that the air filter is right side up.
  6. Slide the new air filter inside the plastic holder.
  7. Tighten the screws on the power supply air filter plastic holder, and secure it in the power supply unit.