Question 19Refrigeration/AC - 1st Asst/Chief70% to pass
In a refrigeration system that is not protected by a water failure switch, if the cooling water to the condenser fails, what will be the result for protective purposes?
AI Explanation
The correct answer is C) the compressor will shut down by the action of the high pressure cutout switch.
In a refrigeration system without a water failure switch, if the cooling water to the condenser fails, the refrigerant will not be able to dissipate heat effectively. This will cause the refrigerant pressure in the high-pressure side of the system to rise rapidly. The high pressure cutout switch is a safety device designed to detect this high pressure condition and automatically shut down the compressor to prevent damage to the system. The other options are incorrect because they do not directly address the high pressure issue caused by the loss of condenser cooling water.
Related Questions
#17 The rupture disc on a low pressure centrifugal refrigeration unit is used as an over pressure protection device and is set to relieve at 15 psig and is most likely to lift when the compressor is idle? Where is the rupture disc located? #18 Which of the lettered components shown in the illustration indicates the high pressure cutout? Illustration GS-RA-12 #20 When the relief valve opens on a refrigeration compressor discharge line, it discharges high-pressure refrigerant vapor to what location? #21 During the initial cooling down of a box temperature in a refrigeration system, which of the devices listed is used to prevent excessive gas pressure at the compressor suction for the purpose of prevention of overloading of the compressor driver? #22 Which of the conditions listed could cause excessively low refrigerant pressure at the compressor suction of a TXV controlled refrigeration system?