Installation
81
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
5. Plug the fan connector into the connector marked "FAN 2" on the internal power
supply unit.
6. Fit the upper rear housing cover.
7. Reconnect the communication server to the power supply.
Fig. 20
Fitting the additional fan in Aastra 470
4. 3
Earthing and protecting the communication server
The protective earth and equipotential bonding are important integral parts of the
safety concept: Standard EN 60950 relevant to safety matters stipulates protective
earthing.
Warning
High leakage currents can occur as a result of connecting to the commu-
nication network.
Establish an earth connection before connecting to the communications
network.
Disconnect the communication server from the communications net-
work before carrying out maintenance work.
FAN 2
FAN 1
Fastening frame
Standard fan
Redundant fan unit
