Hello that motocompresor is Chinese brand huaxue is 1/5 HP refrigerant R600a, replace it with a motor compressor of the same power that works with refrigerant R134a, the R600a is very dangerous and is flammable, and it is very difficult to get motor compressors for R600a . I made several modifications of that type and they work well, you do not have to modify anything and the work pressures are similar.