Emerson Semi-hermetic refrigeration compressor 4MA-22X

The Stream series comes with digital technology in order to provide 50…100% (4-cylinder) and 30…100 % (6-cylinder) step-less capacity modulation while ensuring precise temperature control and system efficiency. Digital is a much simpler modulation alternative to commonly used frequency inverters but confers the same control and energy saving benefits. Digital modulation can easily and quickly be implemented into any existing system design. The modulation mechanism is based on blocking the suction on one of the compressor cylinder banks. By controlling the time when actual compression is taking place, the capacity output of the compressor can be indefinitely adjusted from 30-100%. Specifications Nominal Voltages400, 460 V Frequency50, 60 Hz ApplicationsLow Temperature, Medium Temperature

Features Continuous modulation from 50–100% (4-cylinder) and 33–100% (6-cylinder) ensuring a perfect match of capacity and power to refrigeration load Economical and reliable alternative to frequency inverters Precise suction pressure control with associated energy savings and stable evaporating temperatures Quick and easy integration into refrigeration equipment, similar to any other standard compressor Possibility to easily retrofit existing installations with digital cylinder head kit No vibrations or mechanical stress on system piping and compressor parts Reduced compressor cycling for longer contactor and compressor life Copeland electronics for advanced protection, diagnostics and preventive maintenance