Eliminate uncondensable gases from the interior of the system (air, nitrogen);
The presence of uncondensable gases causes the operating pressures of the system to vary and reduce its capacity.
- Dehydrate the system, ie remove the moisture contained inside it;
Moisture can produce even more damaging effects, such as oxidation of metal parts, change in oil density and consequent loss of lubrication. But the worst effect results from the formation of an acid when the moisture reacts with the refrigerant and oil in the system; this acid corrodes the varnish of the winding of the compressor causing its burning.
