GE Industrial Solutions Entellisys Device Replacement Guide - Manual (Page 7)

Removing the side and horizontal-mount chassis 7
1
1 Replacing a CPU chassis
1.1 Removing the side and horizontal-mount chassis
1. Prepare for the shut down of the CPU by setting the remaining CPU in the system as the
default. (On the Main Menu, click User Settings, and then click HMI Preferences.)
WARNING! Voltages hazardous to personnel are present.
2. Open the instrument compartment. On the chassis to be removed, turn the power off using
the switch located at the rear of the chassis. When the chassis is powered off, the CPU
indicators do not light.
Figure 1-1 CPU rear
3. On the CPU to be removed, disconnect the two Ethernet cables from ETH0 and ETH1 and one
synch clock cable from PORT 1 or COM 2, making note to which port each is connected.
Figure 1-2 CPU front
4. At the rear of the chassis, remove the 2-pin connector plug by depressing the tab and sliding
the plug out of the socket.
5. Remove the four mounting bolts and star washers at the front of the chassis.
6. Slide the chassis outward 1 to 2 inches.
7. Remove the 120 Vac power cable at the rear of the chassis by pulling it out of its socket.
8. Remove the chassis from the mounting bracket.
WARNING! Voltages hazardous to personnel and equipment are present—be careful not to
contact the energized terminal blocks on the compartment walls.