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Chapter 5
Installing and Removing FRUs
Step 6
Attach the other end of the cable to the site ground connection.
Step 7
Before you connect the power supply to a power source, ensure that all site power and grounding
requirements are met.
Step 8
Remove or rotate the plastic cover from the terminal block.
Caution
Before installing the DC cable lugs, insulate the entire 90 degree portion of the lugs where the wire is
crimped to avoid hazardous conditions and where the DC input power is accessible through the terminal
cover of the DC PEM.
Note
To avoid hazardous conditions, all components in the area where DC input power is accessible must be
properly insulated. Therefore, before installing the DC cable lugs, be sure to insulate the lugs according
to the manufacturer's instructions.
Step 9
Insert the negative lead cable first. Replace the ground lug with cable in the following order:
a.
Washer
b.
Ground lug with negative wire
c.
Kepnut screw
Step 10
Tighten the Kepnut screw to the recommended torque of 18 in-lbs minimum to 22 in-lbs maximum.
Step 11
Repeat Step 7 and Step 8 for the RTN lead cable.
Note
Secure the wires coming in from the terminal block so that they are not disturbed by casual contact.
Step 12
Replace and rotate the terminal block plastic cover back into position until it is locked.
Note
Both DC inputs to the DC PEM must be connected and energized for the Cisco RFGW-10 UEQAM
system to operate properly.
Step 13
Fully install the DC PEM into the power supply bay and tighten the captive fasteners on the faceplate to
the chassis.
Step 14
Tighten the DC PEM captive fasteners to 12-16 in-lb torque.
Note
Both DC inputs to the DC PEM must be connected and energized for the Cisco RFGW-10 UEQAM
system to operate properly.
Step 15
Energize the facility DC power feeds to the power supply.
Step 16
Verify power supply operation by checking the power supply's front panel LEDs. The –48 V1 and –48
V2 LEDs should illuminate green.
Step 17
Switch the circuit breaker switch to the On (|) position.
Step 18
Again verify the power supply operation by checking the power supply's front panel LEDs. The –48 V1,
–48 V2 and OUTPUT OK LEDs should illuminate green.
OL-16264-04
Installation and Removal of the DC PEM
Cisco RF Gateway 10 Hardware Installation Guide
5-5
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