94 DAIRY LABORATORY GUIDE 



Line up shaft by fastening chalked string along 

 ceiling parallel to direction of shafting. Snap string 

 and put hangers up loosely in line with chalk mark. 

 Place shaft, arranging its position in hangers in a 

 plane parallel to the floor, and fasten hangers and 

 shaft securely. Line up machinery to shafting by 

 holding one end of string so that it touches both 

 sides of pulley on shaft and tight pulley on ma- 

 chine. 



Repair worn valves by repacking and grinding 

 when worn. 



Repair cement floor by thoroughly mixing, while 

 dry, one part of cement to two of sand. Moisten 

 with water until thoroughly wet but without excess 

 of water. Apply, press thoroughly, and smooth with 

 trowel. If corners of dairy floor are not rounded, 

 fill in with cement and smooth neatly as shown in 

 Fig. 5. 

 Adjust a small electric battery with bell and 



switch connections 

 ) above the milk vat and 

 Bell® sTHb attach a string with 

 float on one end and a 

 weight on the other, as 

 shown in accompany- 

 ing cut. When the milk 

 ^ is being pumped or 



^^^ drawn from the vat to 



^'•'■^^ the separator or pas- 



teurizer, the float will lower until the weight on the 

 opposite end of the string touches the break and 



~% 



