The capital cost of a reel or rod washer is possibly only 30 percent of that of a modern brush washer but the latter is a particularly sophisticated machine, which works very efficiently with most types of vegetable and properly controlled, will probably repay the increased capital outlay within a season. These machines comprise a trough-shaped frame, with six or more longitudinal rotating nylon tufted brushes, the bristles of which are set in a spiral fashion to assist the movement of vegetables throughout the length of the washer. A longitudinal spray Pipe, fitted with fine nozzles, is located down the middle; it is cam-operated so that it rotates through about 60 directing the water sprays over the whole inner area of the washer, through which the vegetables are continuously passing. The brushing action tends to be more effective than the mere tumbling action of the simpler rod washer, as it facilitates the removal of potato eyes, and excrescences and growth cracks in most types of root vegetable are attacked with better effect. Water usage on these machines is usually very economical and, given the correct type of nozzle, a water pressure of 1. 4atm is quite effective for throughputs up to 4-8 tonnes per hour. Reference has been made in Chapter 2 to the water usage to be expected in a medium size plant but this figure can be wide of the mark if proper care and attention is not given to the installation and correct operation of the washing plant. ot water blancherThe capital cost of a reel or d washer is possibly only 30 percent of that of a modem brush washer but the latter is a particularly sophisticated machine, which works very efficiently with most types of vegetable and, properly controlled, will probably repay the increased capital outlay within a season. These machines comprise a trough-shaped frame, with six or more longitudinal rotating nylon tufted brushes, the bristles of which axe set in a spiral fashion to assist the movement of vegetables throughout the length of the washer. A longitudinal spray pipe, fitted with fine nozzles, is located down the middle; it is cam-operated so that it rotates through about a", directing the water sprays over the whole inner area of the washer, through which the vegetables are continuously passing. The brushing action tends to be more effective than the mere tumbling action of the simpler md washer, as it facilitates the removal of potato eyes, and excrescences and growth cracks in most types of mot vegetable are attacked with better effect. Water usage on these machines is usually very economical and, given the correct type of nozzle, a water pressure of 1.4atm is quite effective for throughputs up to 4-8 tonnes per hour. Reference has been made in Chapter 2 to the water usage to be expected in a medium size plant but this figure can be wide of the mark if proper care and attention is not given to the installation and correct operation of the washing plant. Hot water blancher 51