PRODUCTION AND SALE
OF REFRIGERATION EQUIPMENT

Distributor, manufacturer, and official service center of "DORIN" in Russia

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Rotary-screw compressor-receiver unit

Rotary-screw compressor-receiver unit

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The Polus-Sar compressor-receiver units are equipped with rotary-screw compressors of the leading manufacturers: Bitzer, Fusheng, RefComp, Mycom.

Compressor-receiver units based on refrigeration rotary-screw are designed for cooling chilled food storage chambers and blast freezing, as well as for other low-temperature applications, and are supplied ready for operation. Refrigeration units are equipped with protection and control devices for equipment operation. The compressors are HFC/HFO refrigerants compatible. The cooling loop of the unit has been leak-tested and filled with dry nitrogen excessive pressure of 1 - 1.5 bar. The compressor and oil separator are filled with oil. All control board automation components are tested, product defects are eliminated immediately on the spot.

The units are made with high-quality components from well-known European companies: BITZER, Danfoss, ALCOCONTROLS, BECOOL, Carly, CPS, Eliwel, Mastercool, Ranco, Refco, Swep, Gvn, Bernzomatic, Errecom, Henry. Control boards are assembled with Schneider Electric, Simens, ABB, CAREL, ELIWELL, Danfoss components.

  • Refrigeration capacity: 60-345 kW.
  • Condenser type: air, plate, shell and tube.

Standard equipment of the unit:

  • Semi-hermetic rotary-screw compressor equipped with suction and discharge shut-off valves;

  • Oil separator with heating system and minimum oil level alarm;

  • Oil supply system to the compressor;
    Suction line, which includes a dismountable filter cleaner, shut-off valve, insulation, and pipelines;

  • Discharge line, which includes a discharge pressure control, valves, and pipelines;

  • Liquid line, which includes a liquid receiver, a dismountable filter-drier, shut-off valves, and pipelines;
    Monitoring and safety system, including pressure gauges and pressure switches for high and low pressure, safety valves on the liquid receiver and oil separator;

  • Economizer (upon request it can be excluded from the unit);

  • Bypass line (on request it can be excluded from the unit);

  • Disconnection terminal blocks on the base frame (on request, it can be excluded from the unit);

  • Dust and moisture-proof control box for the unit and condenser.

Additional options

О: liquid separator.
C: condensing pressure control system (pressure switch for each fan, check valve at the receiver inlet).
Z: System for starting at low ambient temperatures (back pressure control on the discharge line, differential valve).
E: Operating mode with economizer (plate heat exchanger, thermal expansion valve, solenoid valve, sight glass, ball valve).
R: Capacity control.

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