Question 101Refrigeration/AC - Assistant Engineer70% to pass
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?
AI Explanation
You are correct, the answer A) suction service valve as a vapor is the correct answer.
To add small amounts of refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the suction service valve in a vapor state. This allows the refrigerant to properly mix with the low-pressure refrigerant in the suction line and get drawn into the compressor. Adding liquid refrigerant directly to the low side could damage the compressor. The other options, such as using the discharge service valve or adding liquid refrigerant, are incorrect as they would not properly integrate the new refrigerant into the system.
Related Questions
#99 When recovering the remaining R-134a refrigerant from the centrifugal chiller shown in the illustration as a vapor using the recovery unit’s compressor, in addition to opening valves "1a", "1b", and the compressor suction and discharge isolation valves, which of the following would be the correct valve lineup? Illustration GS-RA-28 #100 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? #102 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? #103 Concerning the arrangement of equipment and associated hoses shown in the illustration, what statement is true? Illustration GS-RA-58 #104 A reciprocating refrigeration compressor may be tested for leaking discharge valves by stopping the compressor, turning the discharge service valve all the way in, and then turning the compressor over by hand. If the discharge valves are leaking, the compound gage will show pressures which react in which way?