MDE 7 Q4

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Manual Testing of HT Cooling Water High-Temperature Alarm

Question 1: What is the first step in manually testing the set point for the high-temperature alarm on a diesel generator’s HT cooling water system?

C) Gradually heat the HT cooling water while monitoring the temperature

B) Isolate the temperature sensor from the control system

D) Bypass the high-temperature sensor

A) Increase the engine load to maximum capacity

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Restoring Normal Operation After Testing

Question 4: What is the final step after manually testing the HT cooling water high-temperature alarm and shutdown on a diesel generator?

B) Replace the cooling water with fresh water

C) Reset the alarm and shutdown systems and return the HT cooling system to normal operation

D) Shut down the generator and perform a full inspection

A) Increase the load to ensure the generator is functioning properly

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Verifying Set Points on HT Cooling Water Alarm and Shutdown

Question 3: After manually testing the high-temperature alarm and shutdown set points, what should be done to verify the accuracy of these set points?

C) Replace the temperature sensor with a new one

A) Run the generator at full load for an extended period

B) Record the temperatures at which the alarm and shutdown occurred and compare them with the set points

D) Reset the alarm and shutdown system to factory settings

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Manual Testing of HT Cooling Water High-Temperature Shutdown

Question 2: How is the high-temperature shutdown set point manually tested on a diesel generator?

C) By lowering the HT cooling water temperature to below the set point

A) By disconnecting the shutdown system and running the generator

B) By gradually heating the HT cooling water until the shutdown occurs

D) By simulating a high-temperature condition using an external device

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