Question 62Refrigeration/AC - 1st Asst/Chief70% to pass
Concerning the arrangement of equipment and associated hoses shown in the illustration, which statement is true? Illustration GS-RA-58
AI Explanation
The correct answer is B) When recovering refrigerant from the centrifugal chiller using this method, it minimizes the risk of chiller tube freeze-up.
The arrangement of equipment and associated hoses shown in the illustration is designed to safely recover refrigerant from a centrifugal chiller. The key benefit of this method is that it helps prevent the chiller tubes from freezing up during the recovery process, which can damage the equipment. This is achieved by maintaining a proper flow and pressure balance within the system.
The other options are incorrect because: A) Further recovery may still be required to meet regulatory limits, C) The vent hose should remain open to allow the refrigerant to be properly recovered, and D) Exceeding 90% of the drum's capacity could lead to overfilling and potential safety issues.
Related Questions
#60 If a refrigeration system, equipped with a reciprocating compressor, has a liquid-line solenoid valve that is leaking during the 'off' cycle, what would this cause? #61 To add small amounts of refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through a particular valve and in a particular state. What valve and state combination is correct? #63 As shown in the illustrated LP centrifugal chiller high efficiency purge recovery unit piping schematic, what statement is true concerning the vacuum pump? Illustration GS-RA-55 #64 To add refrigerant to the high side of an air conditioning system, you should close the king valve and introduce the refrigerant through what valve in what state? #65 The compressor used in a water-cooled air conditioning system is short-cycling. A service check determines that the suction pressure remains above the normal cut-in point during cycling and that the discharge pressure rapidly builds up to the cut-out point while running and gradually falls to the cut-in point during the off cycle. What is likely the cause?