Replace An Acx7100-32C Dc Power Supply Module; Remove An Acx7100-32C Dc Power Supply Module - Juniper ACX7100-32C Hardware Manual

Replace an ACX7100-32C DC Power Supply Module

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Remove an ACX7100-32C DC Power Supply Module | 91

Install an ACX7100-32C DC Power Supply Module | 93
Remove an ACX7100-32C DC Power Supply Module
Before you remove a power supply module (PSM), be aware of the following:
NOTE: The minimum required number of PSMs must always be present in the router.
WARNING: Before performing DC power procedures, ensure that power is removed
from the DC circuit. To ensure that all power is off, locate the 2-pole circuit breaker on
the panel board that services the DC circuit, switch the circuit breaker to the off
position, and tape the switch handle of the circuit breaker in the off position.
CAUTION: To maintain proper cooling and prevent thermal shutdown of the operating
power supply unit, each power supply slot must contain a PSM. If you remove a PSM,
you must install a replacement PSM shortly after the removal.
NOTE: After powering off a PSM, wait at least 60 seconds before turning it back on.
CAUTION: Do not mix AC and DC PSMs in the same chassis.
To remove a DC PSM:
1. Switch off the dedicated customer-site 2-pole circuit breaker for the PSM being removed. Follow
your site's procedures for preventing ESD damage.
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.
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