Juniper Networks EX4200 - Manual (Page 177)

a. Remove the jumpers on the power supply terminal block.
b. Secure the ring lug of the positive (+) DC power source cable from the
first DC power source to the A+ terminal on the first DC power supply.
c. Secure the ring lug of the negative (–) DC power source cable from the
first DC power source to the A– terminal on the first DC power supply.
d. Secure the ring lug of the positive (+) DC power source cable from the
second DC power source to the A+ terminal on the second DC power
supply.
e. Secure the ring lug of the negative (–) DC power source cable from the
second DC power source to the A– terminal on the second DC power
supply.
f. Tighten the screws on the power supply terminals on both the power
supplies until snug using the Phillips (+) screwdriver, number 2. Do not
overtighten—apply between 8 lb-in. (0.9 Nm) and 9 lb-in. (1.02 Nm) of
torque to the screws.
Figure 58: Securing Ring Lugs to the Terminals on the DC Power Supply in an EX3200
or EX4200 Switch
6. Replace the terminal block cover and secure it using the screw. Use the
Phillips (+) screwdriver, number 2 to tighten the screw.
7. Close the input circuit breaker.
8. Verify that the LEDs on the power supply are lit green and are on steadily.
Related Topics ■ Connecting and Configuring an EX Series Switch (CLI Procedure) on page 161
■ Connecting and Configuring an EX Series Switch (J-Web Procedure) on page 163
■ Power Supply in EX3200 and EX4200 Switches on page 26
■ DC Power Supply LEDs in EX3200 and EX4200 Switches on page 30
Connecting DC Power to an EX3200 or EX4200 Switch ■ 151
Chapter 11: Connecting the Switch