When adding a specific amount of refrigerant to a new system, how do you measure the amount of refrigerant added?
A) Use a digital scale to register charge as you add refrigerant to the cylinder.
B) Use a digital scale to weigh the refrigerant cylinder.
C) Use a digital scale to register charge as the refrigerant exits the cylinder.
D) Use a digital scale to remove refrigerant until a negative number registers.
C
You might also like to view...
What improper operation can lead to exposure to harmful microorganisms?
A) Cooling tower fan shut-off during cold months B) Excessive fan speed C) Formation of ice-fog when operating in cold climates D) Improper /incorrect treatment of cooling water chemically
In addition to the valley underlayment, a valley in an asphalt shingle roof is covered with flashing in three ways. Name the types and the materials used for flashing.
What will be an ideal response?
In general, which is denser: humid air or dry air?
A) Air density is not affected by humidity. B) Humid air C) Dry air D) Air density peaks at 50 percent relative humidity and decreases both above and below 50 percent relative humidity.
A _____ resembles a very shallow counterbore.
A. spotface B. tapered hole C. concentric arc D. cylinder