A refrigerant system is provided with an enlarged chamber that provides the functions of both an oil separator and a muffler. The methods and systems incorporate the novel use of a high shear device to promote mixing and solubility of peroxides with the olefenic alcohol. The voltage regulator has a first output producing the regulated output voltage and a second output producing a pass voltage. The screen printer 100 also includes a paste printer arranged to print paste material on the at least one substrate using at least one of the print patterns.