Question 102Refrigeration/AC - 1st Asst/Chief70% to pass
As shown in the illustrated flow diagram for a self-contained recovery unit designed for the recovery of refrigerants from high pressure appliances as defined by the EPA Clean Air Act rules, what is the functional purpose of the item labeled "FS2"? Illustration GS-RA-32
AI Explanation
The correct answer is D) It automatically transitions the recovery unit from the direct liquid recovery mode to the direct vapor recovery mode.
The functional purpose of the item labeled "FS2" in the illustrated flow diagram is to automatically switch the recovery unit from liquid recovery mode to vapor recovery mode. This is necessary to ensure the safe and efficient recovery of refrigerants from high pressure appliances, as per the EPA Clean Air Act rules.
The other options are incorrect because they do not accurately describe the purpose of FS2. Option A is incorrect as FS2 does not shut down the compressor when the recovery cylinder is 80% full. Option B is incorrect as FS2 does not shut down the compressor due to excessive discharge pressure. Option C is incorrect as FS2 does not shut down the compressor based on the depth of vacuum in the refrigeration system.
Related Questions
#100 In addition to pressure, most compound and standard pressure gauges used for refrigeration service are also provided with a scale indicating what parameter? #101 Charging liquid HCFC-123 into a system under a deep vacuum could cause what to happen unless necessary precautions are taken? #103 In a refrigeration system featuring low side pump down prior to the automatic shut down of the compressor, the temperature of the refrigerated space is controlled by the action of a thermostat wired to what device? #104 Which of the following statements is true? Illustration GS-RA-12 #105 How does a refrigeration solenoid valve differ from a modulating valve?