Hello all, I would like to find out two things, first is it possible to "top up" an R407c system in liquid form due to the refrigerant being a mixture of three different gases?

The second question is linked to the above question, would an unbalanced R407c system cause a heat exchanger on the condensor side of a printing press chilling unit to burst? It is running two ZR11 M3 scrolls in parrallel?

Regards,

Shannon.