Juniper ACX6160 Hardware Manual page 65

• "DC Power Disconnection Warning" on page 131
• "DC Power Grounding Requirements and Warning" on page 132
• "DC Power Wiring Sequence Warning" on page 133
• "DC Power Wiring Terminations Warning" on page 135
• Ensure that you have taken the necessary precautions to prevent ESD damage (see
Electrostatic Discharge Damage" on page
• Ensure that you have connected the ACX6160 chassis to earth ground.
CAUTION: Before you connect power to the device, a licensed electrician must attach
a cable lug to the grounding and power cables that you supply. A cable with an
incorrectly attached lug can damage the device (for example, by causing a short circuit).
To meet safety and electromagnetic interference (EMI) requirements and to ensure
proper operation, you must connect the chassis to earth ground before you connect it
to power. Under all circumstances, use the protective earthing terminal on the device
chassis to connect to the earth ground. For instructions on connecting earth ground,
see "Connecting the ACX6160 Grounding Cable" on page
• Install the power supply in the chassis following the instructions in
ACX6160" on page 72
The ACX6160 is shipped from the factory with two power supplies. Each power supply is a hot-
removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and
running. You can install replacement power supplies in the two slots next to the fan modules without
powering off the device or disrupting the routing functions.
WARNING: DC-powered ACX6160 models are intended for installation only in a
restricted-access location.
NOTE: The battery returns of the DC power supply must be connected as an isolated DC return
(DC-I).
Ensure that you have the following parts and tools available:
• ESD grounding strap
• DC power source cables (14–16 AWG) with ring lug (Molex 190700069 or equivalent) (not provided)
128).
ACX6160 Universal Metro Router Hardware Guide .
see the
"Prevention of
55.
"Installing a Power Supply in an
57