Have an account?
Skip to Content
Build your own quiz
Suggestions for you
21 questions
Show Answers
See Preview
- 1. Open EndedWhen charging a refrigeration system with a near-azeotropic mixture, what must be done to prevent liquid from entering the system?
- 2. Open EndedThe factory charge in a split system, using R-22, shows 6 lb. 8 oz. in the outdoor condensing unit and 2 oz. in the evaporator. The 3/8" liquid line contains 0.48 oz. per foot and the 7/8" suction line contains 0.10 oz. per foot. The refrigerant lines are 30' long. What is the correct refrigerant charge for this system?
- 3. Open EndedIf the tank is a reusable tank, there are no check valves and system refrigerant can enter the tank as long as the system pressure is higher than the pressure in the tank.
- 4. Open EndedRefrigerant in vapor form is normally put into the system through the ____.
- 5. Open EndedRefrigerant in liquid form is normally put into the system through the ____.
- 6. Open EndedWhen charging a system with vapor refrigerant from a refrigerant cylinder the cylinder will become ____.
- 7. Open EndedOne good feature of an electronic charging scale is that it counts upward as refrigerant is removed, to tell the technician how much refrigerant was used.
- 8. Open EndedGlide is the range of temperatures/pressures in which a blended refrigerant will condense.
- 9. Open EndedFractionation occurs when ____.
- 10. Open EndedUsing a restrictor, liquid refrigerant can be charged into the low-side of the system with the system operating.
- 11. Open EndedThe quickest method to charge a system is to charge only vapor.
- 12. Open EndedWhen adding refrigerant in liquid form into the high-side of the system, the system motor/compressor assembly is running.
- 13. Open EndedIf a critically charged refrigeration system is over charged, which of the following is a likely result?
- 14. Open EndedWhen the system pressures are lower than the pressure in the refrigerant tank, such as when the system has just been evacuated or if the system is out of refrigerant, refrigerant can be added to both the high and low pressure sides of the system.
- 15. Open EndedIf 30 oz. of refrigerant are to be added to a refrigeration system and the supply cylinder weighs 26 lb. 4 oz. before any is added, what will the supply cylinder weigh after the system has been charged?
- 16. Open EndedWhen charging liquid refrigerant from a single valve supply cylinder, the cylinder is placed ____.
- 17. Open EndedIf 22 oz. of refrigerant are to be added to a refrigeration system and the supply cylinder weighs 24 lb. 12 oz. before any is added, what will be the supply cylinder weight after the system has been charged?
- 18. Open EndedA manufacturer's charging chart may be used when available to determine the correct charge for a system.
- 19. Open EndedCharging a refrigeration system refers to ____.
- 20. Open EndedWhen adding refrigerant in vapor form to a refrigeration system, the system motor/compressor assembly is running.
- 21. Open EndedA graduated cylinder charging device is a device that ____.
- Answer choicesTagsAnswer choicesTags