Question 107Refrigeration/AC - 1st Asst/Chief70% to pass
A box solenoid valve used in a multi-box refrigeration system is operated by electromagnetic action by what control device?
AI Explanation
The correct answer is B) box temperature actuated thermostat.
The box temperature actuated thermostat is the control device that operates the box solenoid valve in a multi-box refrigeration system. This thermostat monitors the temperature inside the refrigerated box and opens or closes the solenoid valve to maintain the desired temperature setpoint.
The other options are incorrect because they do not directly control the box solenoid valve. The evaporator outlet temperature (A), discharge pressure (C), and suction pressure (D) are not directly tied to the box temperature and would not be the primary control device for the box solenoid valve.
Related Questions
#105 How does a refrigeration solenoid valve differ from a modulating valve? #106 A liquid line solenoid valve controls refrigerant flow to the evaporator by what means? #108 What is the purpose of the low pressure cut-out switch as used as a primary controller for a refrigeration system or unit? #109 Which of the listed operations will cause an automatically controlled refrigeration compressor to restart if the system features a pump-down cycle? #110 The low-pressure cutout switch settings vary with the refrigerant used and the temperature application. If the low-pressure cutout switch for a particular application is set with a cut- in pressure of 5 psig, what would be the cutout pressure if the differential is 7.5 psig?