Eaton Cutler-Hammer EGS Serie Mode D'emploi Et D'entretien page 19

O & M Manual for the EGS Automatic
Transfer Switch with RTC-50 Control
HIGH VOLTAGES ARE PRESENT IN AND AROUND TRANSFER
SWITCH EQUIPMENT. BEFORE ATTEMPTING TO REPLACE ANY
COMPONENT, DISCONNECT THE LINE POWER FROM THE EQUIP-
MENT BEING SERVICED BY OPENING AND LOCKING OUT, IF POSSI-
BLE, THE NEXT HIGHEST DISCONNECT DEVICE. FAILURE TO
FOLLOW THIS PROCEDURE COULD CAUSE SEVERE PERSONAL
INJURY AND/OR DEATH.
ALWAYS TURN THE UTILITY (SOURCE 1) POWER OFF AND TURN
THE GENERATOR (SOURCE 2) CONTROL SELECTOR SWITCH TO
THE "OFF" POSITION BEFORE ATTEMPTING TO REPLACE ANY COM-
PONENTS.
APPLY UTILITY (SOURCE 1) POWER AND PLACE THE GENERATOR
CONTROL SELECTOR SWITCH IN THE "AUTO" POSITION AFTER THE
COMPONENT HAS BEEN REPLACED. TEST THE SYSTEM FOR
PROPER FUNCTIONALITY.
7.4.1 Component Replacement Instructions
7.4.1.1 100 and 200 Ampere RTC-50 Controller
Figure 20. Controller Board Installed in a EGS ATS.
Step 1: Turn the Generator Start select to "OFF" before attempt-
ing to replace the RTC-50 Controller. Ensure all sources of
power are removed.
Step 2: Disconnect the J1, J2, J3, J4, and J6 plugs from the con-
troller (see Figure 21).
Step 3: Disconnect the wires connected to J7 and J8.
Step 4: Remove the four (4) screws located at the corners of the
controller that secure it to the power panel. Remove the
controller (see Figure 21).
IB00405003E - 70-8662
WARNING
NOTICE
RTC-50
For more information visit: www.eaton.com
Effective: July 2008
CONNECTORS
J1-J4
Figure 21. Removing the Controller Board
Step 5: Align the new controller with the mounting holes. Secure
the new controller board using the existing hardware.
Tighten the screws.
Step 6: Connect the J1, J2, J3, J4, and J6 plugs to their original
receptacles.
Step 7: Reconnect the wires to J7 and J8.
Step 8: Reapply power to the transfer switch.
Step 9: Place the generator control selector switch in the "AUTO"
position after the controller has been replaced. (The Gen-
erator may start but will shut down with in 5 minutes.)
Test the system for proper functionality.
Instructional Booklet
Page 19
MOUNTING
SCREWS
J8
J7
J6
J5
.