Longshine LCS-C819 - Manual (Page 28)

19" Rack-mount 12-port Converter Chassis
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6
Cooling
The Chassis holds up to two Power Supplies and
twelve Media Converters, so it needs to have some
form of cooling.
This Chassis has three fans located at the rear, they
draw air into the Chassis. Each fan is connected to
the Status Monitoring Panel on the front of the
Chassis. Even with only one fan working, the Chassis
will be able to operate under normal operating
temperatures.
For the purpose of cleaning, the Fan panel assembly
can be removed for periodic maintenance. Switch the
power off to the Chassis (both power supplies!!),
remove the six securing screws and disconnect the
three power cables supplying DC to the fans.
Clean fans with a dry cloth and reverse the above
procedure.