Question 156General Subjects - Assistant Engineer70% to pass
If a hydraulic system is in continuous operation, and is equipped with an air cooled heat exchanger, the fan should _______________.
AI Explanation
The correct answer is C) be controlled by a thermostat to maintain the oil temperature at less than 190°F.
In a hydraulic system that is in continuous operation, the fan for the air-cooled heat exchanger should be controlled by a thermostat to maintain the oil temperature below 190°F. This is necessary to prevent the oil from overheating, which can damage the hydraulic components and reduce the system's efficiency.
The other options are incorrect because: A) the fan should not run continuously, as that would waste energy; B) the fan should not only come on after the main pump is secured, as the oil can still overheat during operation; and D) is not a complete answer choice.
Related Questions
#154 Which of the following speed control devices is used strictly as a safety device to prevent prime mover damage and acts by shutting down the prime mover? #155 Which term represents the change in speed required before a speed control governor will initiate corrective action as the load changes? #157 In which of the listed hydraulic systems will the installation of an oil cooler be necessary? #158 In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon _______________.#159 Overheating of the oil in a hydraulic system can be caused by _______________.