166 MARKET DAIRYING 



2. Water gauges should frequenty be blown out and 

 cleaned. 



3. Keep the exterior of the boiler dry. Moisture will 

 corrode and weaken it. 



4. The boiler should be blown off under low pressure 

 every two or three days. 



5. A boiler that is not used for some time should be 

 emptied and dried. If this cannot readily be done, fill 

 it full of water to which a little soda has been added. 



6. Frequently examine the safety valve to see that it 

 is in good working order. ' 



7. Do not empty boiler while brick work is very hot. 



8. Never pump cold water into a hot boiler. Leaks 

 and explosions may be the result. 



9. Leaky gauges, cocks, valves, and flues should be 

 repaired at once. 



10. Do not fail to examine the pressure gauge fre- 

 quently. 



11. It is good policy to have two means of feeding a 

 boiler. The pump or injector may get out of order and 

 cause delay and danger. 



12. Feed pumps and injectors need frequent cleaning 

 to keep them in good working order. 



13. Look out for air leaks. If air is admitted any- 

 where except through the grates serious waste may re- 

 sult. Such leaks are to be looked for in broken doors and 

 poor brick work. 



14. Flues should be cleaned often, especially if soft 

 coal is burned. This will prevent overheating of metal 

 and at the same time save fuel. 



15. Do not allow filth to accumulate around the boiler 

 or boiler room. 



16. Keep all the bright work about the boiler "shiny." 



