When a refrigeration compressor is in the 'off' cycle, the thermal expansion valve will react in what way?
it will always open wide regardless of whether or not the system employs a pump down cycle
it will always completely close regardless of whether or not the system employs a pump down cycle
it will always remain in the same position just prior to the cycling off of the compressor
it will continue to function as a result of the net balance of forces acting on the diaphragm
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