Troubleshoot Fire Detection System?

Question 1

Does a thermocouple fire detection system warn the pilot of a general overheat condition?

Answer 1

No, it operates on the rate of temperature rise, and it detects only a fire

Question 2

Does a thermal switch fire detection warn the pilot of a general overheat condition?

Answer 2

No, it actuates only when there is a fire

Question 3

How is a thermoswitch fire detector circuit checked?

Answer 3

Close the test switch, if the system is continuous and not shorted the fire-warning light and bell will actuate. Failure of the warning light to illuminate shows the system is faulty

Question 4

How us a continuous-loop fire detector circuit checked?

Answer 4

Same as a thermoswitch

Question 5

Does a pneumatic fire detection system warn the pilot of a general overheat condition?

Answer 5

Yes, it actuates when there is a fire or general overheat condition

Question 6

How is the pneumatic fire detection system tested?

Answer 6

When the test switch is closed, low-voltage AC flows through the stainless steel tube in which the gas absorbing element is housed. This current heats the element which releases gas and actuates the fire warning light and bell