An assembly for removing contaminants from objects and recycling a solvent from a contaminated solvent solution includes a parts washer assembly including a container for a contaminated solvent solution and a recycling assembly that includes a reservoir module connected to a recycler module. The controlling means comprises: electrical power storage means; detection means responsive to said loss of power from said electronic circuitry; and means coupled with said detection means for using electrical power from said storage means to keep said further control valve open for a period after closure of said first control valve and close it after said period. Each pontoon can be rapidly raised to a rest position for paddling the kayak or canoe. There is a stationary plenum assembly defining a pumping chamber, and the pumping element is operably disposed within the pumping chamber, and a drive means is operable to transmit rotational movement of the rotatable housing to said rotor of the pumping element, such that clutch engagement is not dependent upon coupling input-to-output speed differential. The invention also relates to a composition useful as a working solution at production of hydrogen peroxide.