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SWEETENED CONDENSED MILK CONDENSING 



value, as is the case in condensing- milk, the barometric and wet- 

 vacuum condensers are best suited ; if properly constructed, their 

 operation utilizes the cooling 1 water most economically. 



Care of the Condenser. In the operation of the spray and 

 jet condenser, special attention should be paid to the condition 

 of the spray pipe, or spray plate. Especially, when the water 

 used contains much organic matter, as is the case with water 

 from a creek, pond or lake, there is a tendency of the spray equip- 

 ment becoming filled and coated with slimy organic matter, 

 causing the perforations to clog. This renders the distribution 

 of the spray irregular and the control of the pan difficult. It 

 causes great waste of water because much of the water is dis- 

 charged from the condenser and lost without coming into direct 

 contact with the vapors. The water is, therefore, not utilized 

 economically and the difference between the temperature of the 

 vapors and the discharge of the condenser is excessive. In order 

 to avoid this the condenser should be cleaned out thoroughly at 

 least once a week, or oftener if necessary, to keep the pores of 

 the spray pipe or plate free from obstructions. It is advisable to 

 install condensers equipped with a manhole, properly located, 

 otherwise access to the spraying arrangement is not sufficiently 

 convenient to insure frequent inspection and thorough cleaning 

 by the average operator. 



The Expansion Tank, Catch-All, or Milk Trap. This is a 

 tank frequently installed between 

 the dome of the pan and the con- 

 denser. Its purpose is to collect and 

 reclaim 'any milk that may be carried 

 over from the pan and to prevent 

 its escape and loss through the con- 

 denser. 



If the pipe through w;hich the 

 milk enters the pan is turned down 

 and its end is carried to near the 

 bottom of the pan, so as to avoid 

 the formation of excessive milk 

 spray, if the pan is operated care- 

 fully and if the milk is kept at a *** 29 - vacuum pan with milk 

 reasonably low level, there is very courtesy of Arthur Harris & Co. 



