Question 8Refrigeration/AC - QMED70% to pass
With a service gauge manifold set connected to a refrigerant compressor as shown in the illustration, which arrangement of the gauge manifold set valves and compressor service valves would allow for simultaneous reading of the compressor suction and discharge pressures? Illustration GS-RA-03
AI Explanation
The correct answer is B) Valves "2" and "5" both closed, along with valves "1" and "6" both cracked open off their backseats.
This arrangement allows for simultaneous reading of the compressor suction and discharge pressures. With valves "2" and "5" closed, the gauge manifold set is isolated from the refrigerant system, but with valves "1" and "6" cracked open, the suction and discharge pressures can be read directly from the gauge manifold.
The other options are incorrect because they either do not isolate the gauge manifold set from the system (A and C) or do not allow for pressure readings to be taken (D).
Related Questions
#6 Moisture in a refrigeration system can cause which of the following conditions? #7 If the combination moisture indicator and sight glass indicates an accumulation of moisture within the system, which of the listed procedures would be the most practical to follow? #9 Which of the hand valve configurations for the gauge manifold set is the correct set up for monitoring both the low and high system pressures? Illustration GS-RA-03 #10 Which of the following leak detectors would be appropriate for use in leak detecting on a system currently pressurized with nitrogen? Illustration GS-RA-04 #11 What is a quick method used to test a water-cooled condenser for the presence of a refrigerant leak without actually pinpointing the actual location?