Cisco ME 3800X Installation Manual page 50

Power Supply and Fan Module Installation
Installing the DC Power Supply Module in the Switch
To ensure that power is removed from the DC circuits, locate the circuit breakers for the DC circuits,
Step 1
switch the circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.
Insert the new power supply module into the power supply module slot, and gently push it into the slot
Step 2
(Figure
Figure 3-11
PSU OK
Step 3 Align the two captive screws with the screw holes. Use a ratcheting torque Phillips-head screwdriver to
torque each screw to 10 in-lb.
Connect the input power as described in the
Step 4
Wiring the DC Input Power Source
Before you wire the DC input power source, review these warnings and the information:
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
Warning
the protective device is rated not greater than:
24VDC – 30A
48VDC – 15A Statement 1005
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Warning
Statement 1022
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1030
The DC power supply module voltage should be within 18 to 32 VDC or 36 to 72 VDC. If the supply
Caution
voltage is not in this range, the switch might not operate properly or might be damaged.
Cisco ME 3800X and ME 3600X Switch Hardware Installation Guide
3-10
Chapter 3
3-11). When correctly inserted, the power supply module is flush with the switch rear panel.
Inserting a DC Power Supply Module
AC
PSU OK
AC
Installing and Removing AC and DC Input Power Supply and Fan Modules
"Wiring the DC Input Power Source" section.
OL-22168-01