Simpson SWT Series Lid Lock Kit with Daughterboard - Part # ES6056Simpson SWT Series Large Washer Lid Lock Mechanism & Daughterboard. Part No. ES6056. Replaces Part No. 0478200002. Lid lock mechanism and associated daughterboard PCB. This part is an isolated component and replaces earlier versions of this lid lock mechanism which were not isolated and could cause electric shock. Suits some large Simpson automatic washing machine models such as 22S950M, SWT552SA, SWT554, SWT604, SWT605SA, SWT704, SWT754, SWT801,