Which of the following statements about manual refrigeration system purgers is false?
a. Gas being vented into the atmosphere must pass through a beaker filled with water
b. The receiver and condenser should be purged separately
c. Purging rids the system of non-condensable gases
d. Purgers cause considerable loss of refrigerant
e. They must be operated on a regular schedule
Answer: D
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Power Engineering Chapter 121
- Oil added to refrigeration compressors
- When charging a refrigeration system it
- Charging a refrigeration system
- A sulphur candle is a test for
- Which of the following is not a recommended step for the procedure in which dry nitrogen is used for a system leak test?
- Leak testing on a refrigeration system
- Positive pressure testing of a new refrigeration system may be done
- The initial refrigerant charge is added to
- When initially charging a refrigeration system:
- The refrigerant liquid charging valve connection is:
- When using lighted sulphur candles to test for ammonia leaks in a refrigeration system, the presence of ammonia will be indicated by:
- Before operating a new refrigeration plant, or one in which piping alterations have been made, the system must be tested for:
- Which of the following is NOT a problem associated with excessive head pressure in a refrigeration plant?
- Which of the following statements about adding oil to a system is true?
- The liquid line shutoff valve of a refrigeration system is:
- What can cause a high discharge pressure in a refrigeration system?
- It is very important to slowly open oil drain valves and plugs in the crankcase for which of the following reasons?