Tuesday, January 20, 2009

PROPER THERMOSTATIC EXPANSION VALVE TECHNIQUES

If the superheat were too high, we could manually adjust the valve by turning the valve stem counter-clockwise (as viewed from the bottom), which would loosen the spring tension.

This would allow the bulb pressure to overcome the evaporator and spring pressure causing the valve to open, which would feed more refrigerant into the evaporator, thus lowering the superheat

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