Maintenance and Care, Level of Repair | Eaton Electrical RTC-50

Instructional Booklet
Instructional Booklet

Page 8	Effective: June 2007	Instruction Manual for the Eaton RTC-50
		Instruction Manual for the Eaton RTC-50

Automatic Transfer Switch Controller

SECTION 5: MAINTENANCE, TROUBLESHOOTING, AND REPLACEMENT

5.1 Maintenance and Care

The RTC-50 is designed to be a self-contained and maintenance- free unit. The printed circuit board is conformally coated at the factory. The RTC-50 is intended for service by factory-trained personnel only.

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 within 5 minutes.)

Test the system for proper functionality.

5.2 RTC-50 Controller Troubleshooting

The Troubleshooting Guide (Table 3) is intended for service per- sonnel to identify whether a problem being observed is external or internal to the unit. For assistance with this determination, con- tact Eaton Electrical. If a problem is identified to be internal, the unit should be returned to the factory for replacement.

Table 3. Troubleshooting Guide.

SYMPTOM	PROBABLE CAUSE	POSSIBLE SOLUTION(S)
“Util Avail” and “Gen Avail”	Power is deficient or absent.	Verify that power is connected
LEDs are not lit.		at J1 – J4 and that it is within
		specifications.
	RTC-50 is malfunctioning.	Replace the unit.

Utility source or Generator	Voltage is not within setpoint	Verify voltage with multimeter.
source is not available when	values.	Check the programmed setpoint
it should be.		values.

5.3 Level of Repair

This manual is written with the assumption that only ATS trouble- shooting will be performed. If the cause of malfunction is traced to an RTC-50, the unit should be replaced with a new unit. The malfunctioning unit should then be returned to Eaton Electrical for factory repairs.

5.4 RTC-50 Replacement

WARNING

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 POWER OFF AND TURN THE GENERA- TOR CONTROL SELECTOR SWITCH TO THE “OFF” POSITION BEFORE ATTEMPTING TO REPLACE ANY COMPONENTS.

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 controller

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.

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.

For more information visit: www.eaton.com

IB00405004E-70-8664

Instructional Booklet