What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible plug?
A) Pressure relief valves are less expensive.
B) The pressure relief valve resets itself.
C) Pressure relief valves can also be used to check the receiver pressure.
D) It is impossible for a pressure relief valve to malfunction.
Question 2
Why is it necessary to have controls for maintaining a minimum high-side pressure on outdoor air-cooled condensers?
A) Compressors will not operate correctly if the compression ratio is too low.
B) The chemical components in the refrigerant will separate if the pressure is allowed to drop below the normal minimum operating pressure.
C) The refrigerant will not condense if it is excessively cooled.
D) Refrigeration metering devices require a minimum pressure drop to operate.
Focusing Jets by Pressure
With all vacuum lines and the intake tube removed, the valve cover can be removed after removing all ...
Generalized pressure drop correlation
Thoracic cage. Avoid heavy pressure over the sternum and xiphoid process; caution over rib cage.
The popliteal area. Avoid heavy pressure over the back of the knee joint.
Compression using reinforced palm. The heel of the top hand is placed to avoid putting pressure on ...