I have to replace R290 compressor because rattling sound inside compressor. But I couldn't find any replacement compressor in my area at all. The spec is as follows.
Appliance : Turbo-air sandwich prep table, JBT-72-N
compressor: Cubigel, NUG90LR with POE

I am going to replace with R404a compressor : Embraco NEK6210GK.
My question are:
1. If I replace the compressor and charge with R404a, the condenser capacity will be enough for R404a refrigerant?
2. If I replace only with R404a compressor, and charge with R290 refrigerants , is it Ok?