NYC RMO, CHAPTER 9 EXAM QUESTIONS AND CORRECT ANSWERS

NYC RMO, CHAPTER 9 EXAM QUESTIONS AND
CORRECT ANSWERS
9.01.) Which of the following is considered the most common source of non-condensable
gases? - CORRECT ANSWERS Air



9.02.) If a compressor is operated with its suction service valve closed and its discharge service
valve open, which of the following will take place? - CORRECT ANSWERS Non-condensable
gases may be drawn into the system



9.03.) It is determined that a system is being affected by high condenser pressure. Which of the
following would suggest that the system was in need of purging? - CORRECT
ANSWERS Recent condenser cleaning



9.04.) In what area of the condenser do non-condensable gases collect? - CORRECT
ANSWERS Near the top of the shell



9.05.) In systems containing less than 50 pounds of refrigerant, the compressor is stopped prior
to purging of non-condensable gases. The reason for this is to: - CORRECT ANSWERS It
prevents the loss of large amounts of refrigerant



9.06.) An R-11 chilled water system is equipped with a manual purge system. Which of the
following is used to reclaim the refrigerant from the non-condensable gases? - CORRECT
ANSWERS R-11



9.07.) After being separated from refrigerant, where do purge systems discharge non-
condensable gases? - CORRECT ANSWERS Refrigerant relief line