3com 3012 (3C13612) User Manual

Figure 10   Mounting the Router on a Vertical Surface

You can install any Router 3000 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.

The protection ground (PGND) point of the chassis is located on the left side of the 
rear panel, near the power switch and is labeled with a grounding label, as shown 
in Figure 11. The grounding resistance should not be greater than 5 ohm. 

Figure 11   Connecting the 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.

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

Pan-head screw

Copper 
grounding bar

PGND