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Chapter 4: Maintenance Procedures
CAUTION
If power supplies are not installed in both power supply bays, install a cover over the unoccupied bay. The
cover is required for maintaining proper system ventilation and EMI levels.
Connecting the Ground Wire
To connect the ground wire to the DC power supply:
1 Verify that the DC circuit is de-energized.
2 Identify the grounding point on the front panel of the power supply (see
3 Insert an M3.5 screw (provided) through the ring terminal on the ground wire and into the
grounding point on the power supply.
4 Tighten the screw to 12.6 inch-pounds.
5 Connect the other end of the wire to a known reliable earth ground point at your site.
Figure 55: Connecting the Ground Wire (Model
10934)
1
2
1 = Grounding point
2 = Ground wire
Connecting the Power Supply to the DC Source Voltage
The DC power connection at your facility must be made by a qualified electrician, following the
instructions in this section. There are two 300W DC power supplies available: Model 10933
(recommended) and Model 10934A. The model 10933 can connect to both a +24V and -48V power
source.
NOTE
The connection instructions are different depending upon which type of power source you are connecting
to. The model 10933 can connect to both +24V and -48V sources, while the 10934A can connect to only -48V
sources.
80
Figure 56: Connecting the Ground Wire (Model
10933)
2
SH_209
1 = Grounding point
2 = Ground wire
E4G Series Routers Hardware Installation Guide
Figure 55
and
Figure
1
56).
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