34 S611 Soft Starter MN03902011E—May 2012 www.eaton.comPrinted Circuit Board (PCB) RemovalIf necessary, mark all cables to aid in proper reattachment.The PCB is marked with component identificationinformation adjacent to each connector base. See “PCBConnector IDs” figure below.PCB Connector IDs1. Disconnect leads from the PCB:a) SCR gate leads—two per phase.b) Temperature sensor leads—one per phase.c) Current transformer leads— one per phase.d) User Interface cable.Note: All connectors except the User Interface cable usedetents to secure the connection. To remove, pulleach connector directly away from the PCB. Do nottwist or pry to remove connector from PCB. Do notattempt to separate the connector by pulling on thewires.User Interface cable assembly locking tab is locatedbetween connector and the cover. Use a smallscrewdriver to depress locking tab. The cable mayalso be removed after PCB is removed from thecover.2. Remove the 5 #1 Phillips self tapping screws—one ineach corner, one in center.3. Remove PCB from cover assembly.PCB Reinstallation1. Place the PCB into position on the cover assembly.2. Install all five screws by first turning the screwcounterclockwise until you feel the screw “drop” intoplace. Torque to 8–10 lb-in.3. Connect all leads, pressing firmly until you feel theconnector snap into place.4. Reinstall cover assembly.Cover Reinstallation1. As the cover is placed onto the supports, carefully guidewiring into place.2. Ensure that the BYPASS VOLTAGE contactor connectoris properly connected prior to installing the coverscrews.3. Install and torque all cover assembly screws to 22–27 lb-in.4. Reinstall control wiring.www.comoso.com
