S611 Soft Starter MN03902011E—May 2012 www.eaton.com 33Parts and ServiceServicing the S611S611 Printed Circuit Board (PCB) ReplacementDisconnect power in accordance with federal, state, andlocal codes and remove the S611 from the enclosure ormounting panel.Note: Servicing the S611 while installed in an enclosure ormounted vertically on a panel is not recommended.Place the unit on a clean work surface.Cover Removal1. Disconnect all control wiring and tie wraps securing anywiring to the cover assembly.2. Remove cover screws with nuts, six each on FramesA–D, four each on Frames E–F.Note: Cover screw nuts are prevented from rotating but arenot retained in place by the pole supports. Do notallow hardware to fall into the soft starter.3. Lift top of cover approximately 6 in to gain access to theBYPASS VOLTAGE contactor connector mounted on thePrinted Circuit Board (PCB). Note placement of wiringfrom PCB to soft starter components. See “ContactorConnector” figure below.4. Press locking tab on BYPASS VOLTAGE contactorconnector and disconnect from the PCB.5. Carefully rotate cover to rest onto work surface asshown. See “Cover Position” figure below. If replacingan internal bypass contactor, the cover may be simplymoved aside after disconnecting the BYPASS VOLTAGEconnector to gain access to the contactors.Contactor Connector Cover Positionwww.comoso.com
