We have a York YCAV 0739pa (dual screw, vsd, air cooled) chiller leaking refrigerant between circuit 1 and 2.... as well as leaking liquid refrigerant directly into the suction line.
Today i removed the ends on the vessel and found large quantities of rust all around the copper pipework and internally on the end plate itself. It gets worse, there are large quantities of copper shavings, and of course.... vertigris growing everywhere inside the rifled tube.
Apparently this model was manufactured in Mexico.... Has anyone has a similar experience?
We removed 20 litres of oil, which is less than half i believe. After recommissioning,we are going to run the compressors for 100 hours, and consider changing the oil again. My only concern is what to expect from this. We found the fault with the refrigerant migration. The seal decided to let go due to the lack of a flat, level surface to seal against. Instead, it covers half of the pipes. Anyway, at 1.5 years old, this is the first fault the machine has suffered other than minor trips / alarms..... should we expect to start changing compressors any time soon ?
Does anyone know where to locate a service manual for this beast? I have downloaded the various ones on the york.com website literature library.... but they seem mostly incomplete.