Hitachi GR4000 Series Installation Manual page 205

Step 4
Also, do this supporting the packet routing unit from its under surface using your
hand.
Figure 5.6-3 Packet routing unit removed from the device
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Remove the packet routing unit from the device by pulling it towards you.
Caution: The packet routing unit weighs approx. 5kg when it has the network interface
board installed into it . Be careful not to drop it when handling it, otherwise you
may be injured.
Caution: Do not hold the area marked with
or removing a packet routing unit from GR4000 models. Doing this might deform
the outer frame of a packet routing unit, and NIF might be damaged if you try to
insert it into a packet routing unit with its deformed outer frame.
GR4000 Installation Guide Version 1.00 - Preliminary
in the figure above when mounting
187