Eaton Electrical RTC-50 Manual Do Utilizador

Page 8

Effective:  June 2007

For more information visit: www.eaton.com

IB00405004E-70-8664

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.

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.

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

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.

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.

“Util Avail” and “Gen Avail” 

LEDs are not lit.

Power is deficient or absent.

RTC-50 is malfunctioning.

Verify that power is connected 

at J1 – J4 and that it is within 

specifications.
Replace the unit.

Utility source or Generator 

source is not available when 

it should be.

Voltage is not within setpoint 

values.

Verify voltage with multimeter.  

Check the programmed setpoint 

values.