Cooling System Description; Srx550 Services Gateway Cooling System - Juniper SRX550 Hardware Manual

CHAPTER 5

Cooling System Description

IN THIS CHAPTER

SRX550 Services Gateway Cooling System | 27

SRX550 Services Gateway Cooling System
The SRX550 Services Gateway cooling system consists of four fixed fans. The fans provide cooling to the
components installed in the services gateway. To function properly, the entire cooling system requires an
unobstructed airflow and proper clearance around the site.
The fan controller constantly monitors the temperature of the services gateway and all modules (Mini-PIMs
and GPIMs) installed in the device. Under normal operating conditions, the fans function at lower than full
speed.
If any one of the four fans fails, the services gateway generates a warning but keeps the system running.
If the temperature keeps rising, the services gateway lowers the power consumption by reducing the
performance or shutting down some of the chassis components. However, if the ambient maximum
temperature specification exceeds the warning limit and the system cannot be adequately cooled, then
the services gateway shuts down the system and hardware components completely.
RELATED DOCUMENTATION
SRX550 Services Gateway Chassis | 14
SRX550 Services Gateway Description | 2
SRX550 Services Gateway Front Panel | 15
SRX550 Services Gateway Back Panel | 22
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