Question

If the thermal bulb on a TXV comes loose from the mounting at the outlet of the evaporator, which of the following will occur?

A The valve will open, feeding more refrigerant to the evaporator.
B The valve position will remain unchanged, and the pressure in the bulb will remain the same.
C The valve will close, starving the evaporator
D The suction pressure will drop

Answer 1

If the thermal bulb on a TXV comes loose from the mounting at the outlet of the evaporator, the valve position will remain unchanged, and the pressure in the bulb will remain the same.

Step-by-step explanation:

If the thermal bulb on a TXV (Thermostatic Expansion Valve) comes loose from the mounting at the outlet of the evaporator, the valve position will remain unchanged, and the pressure in the bulb will remain the same. This is because a loose thermal bulb will not be able to accurately measure the temperature of the refrigerant in the evaporator, and therefore, the valve will not respond to the changing conditions. As a result, the valve will not open or close based on the temperature and pressure in the evaporator.