3Com 3012 (3C13612) Installing the Router, On a Workbench, Connecting, Protection Ground, Wire

Installing the Router on a Workbench 23

Figure 10 Mounting the Router on a Vertical Surface

Pan-head screw

Installing the Router	You can install any Router 3000 on a workbench.
on a Workbench	To install the router on a workbench, take the following precautions:
	■ Ensure that the workbench is smooth and stable.
	■ Leave a heat-dissipation clearance of 10 m (4 in) around the router.
	■ Do not put heavy objects on the router.
Connecting the	The protection ground (PGND) point of the chassis is located on the left side of the
Protection Ground	rear panel, near the power switch and is labeled with a grounding label, as shown
Wire	in Figure 11. The grounding resistance should not be greater than 5 ohm.
	Figure 11 Connecting the PGND
	Copper
	grounding bar
	PGND

Connect the PGND wire before connecting other cables. Shorten the ground wire as much as possible to avoid the router and the peer device being damaged during lightning.

Connecting the Power To connect the router to the power outlet and confirm that the PGND wire is

Cable	properly grounded, do the following:
1	Connect the output end of the power supply to the power socket on the rear
	panel of the router.
2	Connect the input end of the power supply to the AC power outlet.
3	Turn on the power switch on the router.
4	Confirm that the router has power by checking whether the POWER LED is on.