Embodiments of a hydraulic brake system are disclosed. A portion of the normal engine coolant flow is directed from a heater hose through a paper or media filter in order to remove particulate matter such as rust and scale. The capacitor includes a pyroelectric body between a first electrode and a second electrode such that an amount of polarization varies based on a temperature. A vibration sensing transducer disposed between the first and second enclosure portions generates a signal responsive to vibration generated by the toilet due to water inflow turbulence. The spraying and recooling steps are repeated until a thorough, even coating is built up on the discrete pieces of free-flowing food. A sensor 70 mounted to the housing 17 detects the UV emission level within the reservoir 22, and generates a signal to indicate the onoff status of the UV bulb 42, andor the magnitude of the UV light within the reservoir 22.