250 horses. Zah300e-mr 1 compressor, 250 sets, is a driven fluid machine that changes low-pressure gas into high-pressure gas. It is the heart of the refrigeration system. It sucks in low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through motor operation, and then discharges high-temperature and high-pressure refrigerant gas from the exhaust pipe to provide power for the refrigeration cycle.