78 DAIRY LABORATORY GUIDE 



EXERCISE 1 



EXAMINATION OF HAND SEPARATORS 



Object: To set a hand separator, knock down movable 

 parts, analyze and become familiar with the variation in 

 mechanism, and reassemble ready for use. 



Apparatus: A number of hand separators, tools accom- 

 panying the same, level, lag screws, and copy of Dairy Lab- 

 oratory Guide. 



Steps: 1. Set the machine upon a solid foundation and 

 then level the bowl frame and bolt down with lag screws. 



2. Remove parts of the separator sufficiently to enable 

 a thorough examination of the gearing; then locate all of the 

 bearings and oil cups. 



3. Take the bowl apart and study the mechanism of the 

 contrivances within. Locate the intake and trace the 

 course of the cream and the skimmilk through the bowl and 

 locate the exits for each. 



4. Trace the power from the handle to the bowl and note 

 the method of increasing the speed. 



5. Determine the number of revolutions of the bowl for 

 each turn of the handle; then determine the normal speed of 

 the bowl per minute. 



6. Observe carefully the manner of adjusting the height 

 of the bowl and adjust it with reference to the cream and 

 skimmilk pans. 



7. In all of the subsequent separator exercises be sure to 

 clean thoroughly all parts of the machine coming in contact 

 with the milk; then wipe the frame with a dry cloth each time 

 after using. 



Application: 1. Why does the bowl need to be level? 

 2. What is the object of the contrivances in the bowl? 



