Disclosed is a new process and intermediates for preparing benzazepines of Formula :wherein R1 and R2 are as defined herein. In a fuel cell 100, a base material 110 is provided with a hydrophobic layer 441 on the surface in contact with a catalyst layer 112 for discharging water promptly, and a hydrophilic layer 443 from the hydrophobic layer 441 towards the outside of the cell for evaporating water which has passed through the hydrophobic layer 441 from the surface. A motorized transfer device is configured to transfer the cleaning unit from the location of a first smelt spout to the location of a second smelt spout. 1 to 20% by mass:X-L-n \u2003\u2003Formula . At least one port is positioned away from the dominant path to isolate the lower frequency signal from high frequency current in the dominant path.