82 PROFITABLE DAIRYING 



Necessity for oiling. All bearings should be 

 kept thoroughly oiled with the best separator 

 oil. It is poor economy indeed to spoil a good 

 machine by using poor 1 oil. Some separators 

 that are still doing work are known to have 

 been in constant use for fifteen years. This is 

 because the machines have been well cared for. 



Vibration. The machine must be placed in a 

 vertical position on a solid foundation and 

 securely fastened, so as to prevent all vibration. 

 Heavy losses are occasioned by an unbalanced 

 bowl or any other source of vibration. 



EXERCISES 



1. Why can milk be separated at a temperature of 

 80° to 90° F. with less loss in the skim-milk than when 

 it is separated at 60° to 70° F. ? 



2. Why wash the dishes in the home after each meal 

 and wash a farm separator only once a day ? 



3. Why should the separator parts be left to air 

 in the sun? 



4. Why is it important to maintain the proper 

 speed when separating milk? 



5. What is the difference in composition between 

 milk and cream? 



6. What is the legal standard in your state for 

 cream, milk, skim-milk? 



