Originally Posted by Khaotik55
Is there any way to check I'm getting full evaporation?
Yes, buy checking the superheat.
Superheat is the difference between the temperature the refrigerant is changing state(evaporating) at in the coil, also called the saturated evaporator temperature, and the temperature of the refrigerant vapor leaving the coil.
The saturated temperature can be determined by measuring the pressure of the refrigerant vapor in the suction line leaving the coil and referencing a PT chart for the refrigerant.
Suction line temperature - saturated temperature = superheat.
If the superheat is 0Âº, than not all of the refrigerant is changing to a vapor, so some liquid is making it out of the coil.
If the superheat is above 0Âº, all of the refrigerant is changing to a vapor before it leaves the coil.
There needs to be a little bit of a buffer to account for changing operating conditions, so adjusting the charge to around 10-15ÂºF superheat would be a good idea.
The final checks and adjustments need to be done when the system is operating in the conditions it will normally operate in, so after the water is chilled to around the desired temperature.