Juniper MX2010 Hardware Manual page 71

Figure 17: Removing Fan Tray
WARNING:
completely.
The host subsystem monitors the temperature of the router components. When the router is operating
normally, the fans function at lower than full speed. If a fan fails or the ambient temperature rises above
a threshold, the speed of the remaining fans is automatically adjusted to keep the temperature within the
acceptable range (see Figure 18 on page 47
in Figure 20 on page 48.
Before removing a fan tray, make sure the fan blades have stopped
and Figure 19 on page 47). The lower fan tray filter is shown
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