56 DAIRYING 



Steady Running of the Separator. 



326. If the separator runs roughly and trembles when under 

 full speed, an efficient skimming may be interfered with. The 

 cause of the vibration should be located at once. An uneven or 

 unsteady motion which makes the separator pans or frame vibrate 

 may be caused by 



1. The separator frame or bowl is not level. 



2. The bowl is out of balance. 



3. The bowl spindle is bent. 



4. The bowl is too high, does not run freely. 



5. The bowl is not put together properly. 



6. The upper bearing is too tight. 



7. The frame is not securely fastened down. 



8. Milk enters before bowl is up to full speed. 



9. Oil not good, or gummed bearings. 



10. Defective gearing or too tight belt. 



11. Worn or dirty bearings. 



12. The bowl is running backward. This is dangerous, as 

 the cover may be thrown off when the bowl turns in the wrong 

 direction. 



13. The speed is too high. 



14. The cover is not screwed down to the mark. 



327. Running a high-speed separator bowl when it trembles 

 perceptibly at full speed is not safe. An effort to remedy the dif- 

 ficulty should be made at once, and if unsuccessful in overcoming 

 this by such means as are available, the bowl should be sent to 

 the manufacturers for repairs. When a separator bowl needs re- 

 pairing it should not be sent away until after a ''loaning bowl' is 

 received from the repair shop. "Loaning bowls" are usually kept 

 on hand at the factory and can be put into the separator frame 

 and used until the one needing rebalancing or other repairs is 

 returned. 



