Getting Rid of Non Condensables
So some uses nitrogen to prevent a low pressure pumped refrigerant system cavitating (boiling at + 30 deg C)and leaves a trail of mixed cylinders and units to purge behind.
Can't just cool and vent and a full recalim facility is out of the question.
As its a bit special the manufacturers aren't too keen on sorting out our problem.
Anyone have a low cost recalim solution.
Re: Getting Rid of Non Condensables
Circuit has a HP receiver or a condenser or similar with no insulation? Or what form the condenser(s) take?
Find a suitable exposed piece and build a "dry damn" around it...Shut off equipment and fill damn with dry ice. Valve or bypass or? so charge runs to supercold spot. Hold liquid refrigerant, valve off as necessary...Pump all the rest of circuit out with Vac Pump or recovery unit.