- play_arrow Fast Track: Initial Installation
- play_arrow Overview
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Initial Installation and Configuration
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Warning Statement for Norway and Sweden
- Fire Safety Requirements
- Installation Instructions Warning
- Chassis and Component Lifting Guidelines
- Restricted Access Warning
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Laser and LED Safety Guidelines and Warnings
- Radiation from Open Port Apertures Warning
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Action to Take After an Electrical Accident
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- DC Power Electrical Safety Guidelines
- DC Power Copper Conductors Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Multiple Power Supplies Disconnection Warning
- TN Power Warning
- QFX5700 Agency Approvals and Compliance Statements
QFX5700 Power Supply Maintenance
Maintaining an QFX5700 switch includes replacing power supplies. Replacing includes removing a failed power supply and installing a functional power supply.
The QFX5700 switch is powered by 3000 W redundant hot-removable and hot-insertable pre-installed AC/HVDC or DC power supplies. QFX5700-BASE configuration switch is powered by two power supplies for 1 + 1 redundancy and QFX5700-PREMIUM configuration is powered by four power supplies for 2+2 redundancy. If any power supply unit fails, you can replace it without powering off or disrupting the routing function, the other power supply units will balance the electrical load without interruption.
Do not mix AC/HVDC and DC power supplies in the same chassis.
AC/HVDC Power Supply Replacement in a QFX5700 Switch
Turn off the power source before disconnecting the power cord to prevent damage to the power connector contact.
If you need to replace all the power supplies installed in your QFX5700 switch, you must power off the QFX5700 switch before removing the power supplies.
Replace the power supply within one minute of removal, to prevent chassis overheating. Before removing the power supply, ensure that you have a replacement power supply available.
The AC/HVDC power supply you are installing must use the same airflow direction as the fan trays installed in the switch. Labels on the power supply handle indicate the direction of airflow.
Before you replace a power supply in an QFX5700 switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).
Ensure that you have the following parts and tools available to replace a power supply:
ESD grounding strap (provided)
Antistatic bag or an antistatic mat (not provided)
(For a DC power supply) Phillips (+) screwdriver, number 2 (not provided)
- Remove an AC/HVDC Power Supply from the QFX5700 Switch
- Install an AC/HVDC Power Supply in the QFX5700 Switch
Remove an AC/HVDC Power Supply from the QFX5700 Switch
To remove an AC/HVDC power supply:
- Remove the power cord from the power supply by pressing in the locking
button on the side of the power connector and gently pulling the
connector out of the power supply faceplate. See Figure 1. Figure 1: Removing the Power Cord from the Power Supply
- Place one hand under the power supply to support it, and slide it
completely out of the chassis. Take care not to touch power supply
components, pins, leads, or solder connections. See Figure 2. Figure 2: Removing an AC/HDVC Power Supply from the QFX5700 Switch
Install an AC/HVDC Power Supply in the QFX5700 Switch
Install the replacement power supply within one minute of removal to prevent the chassis from overheating. Before removing the power supply, ensure that you have a replacement power supply available.
To install an AC/HVDC power supply:
- Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the device.
- If the power supply has protective plastic wrap, peel and remove the plastic wrap from all four sides of the power supply.
- Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
- Using both hands, place the power supply in the power supply slot on the field replaceable unit (FRU) panel of the QFX5700 switch, and slide it in until it is fully seated and the ejector lever slides into place. See Figure 3.
Each power supply must be connected to a dedicated power source outlet.
If you have a Juniper Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.
DC Power Supply Replacement in an QFX5700 Switch
Turn off the circuit breaker for the DC power source before disconnecting the power cord from the power supply. Unplugging a DC connection while the power supply is powered up may damage the electrical connectors.
If you need to replace all the power supplies installed in your QFX5700 switch, you must power off the AQFX5700 switch before removing the power supplies.
Replace the power supply within one minute of removal, to prevent chassis overheating. Before removing the power supply, ensure that you have a replacement power supply available.
The DC power supply that you are installing must use the same airflow direction as the fan trays installed in the switch. Labels on the power supply handle indicate the direction of airflow.
Before you replace a power supply in an QF5700 switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage.
Remove a DC Power Supply from the QFX5700 Switch
To remove a DC power supply:
- Place one hand under the power supply to support it, and slide it
completely out of the chassis. Take care not to touch power supply
components, pins, leads, or solder connections. See Figure 4. Figure 4: Removing a DC Power Supply from the QFX5700 Switch
Install a DC Power Supply in the QFX5700 Switch
Install the replacement power supply within one minute of removal, to prevent chassis overheating. Before removing the power supply, ensure that you have a replacement power supply available.
To install a DC power supply:
- Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the device.
- If the power supply has protective plastic wrap, peel and remove the plastic wrap from all four sides of the power supply.
- Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
- To prevent equipment damage caused by electrostatic discharge, attach an ESD grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Taking care not to touch power supply components, pins, leads, or solder connections, remove the power supply from its bag.
- Using both hands, place the power supply in the power supply slot on the field replaceable unit (FRU) panel of the QFX5700 switch, and slide it in until it is fully seated and the locking lever slides into place. See Figure 5.
Each power supply must be connected to a dedicated power source outlet.
If you have a Juniper Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.
