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Reciprocating Compressors


Single-stage reciprocating compressors

Small single-stage compressors with swept volumes of 100–270 m3/h

CMO compressor units are small units specially designed for use in smaller-scale refrigeration installations where reliability is a particular concern, and uninterrupted service a big priority.

They are an economical, low-maintenance solution for smaller-scale, heavy-duty refrigeration installations, and are most commonly used as stand-alone units operating at full load, or as small back-up compressors.


Six different models are available to provide swept volumes of between 100 and 273 m3/h.


  • High coefficient of performance (COP), with excellent part-load characteristics.
  • Excellent accessibility and few requirements for spare parts.
  • Any necessary repairs can normally be undertaken without having to remove the compressor.
  • Chromium piston rings, gas-dampened discharge valves and hardened cylinder liner surfaces.
  • Spring-loaded safety heads, balanced refrigerant-tight shaft seal, asbestos-free gaskets and an internal bypass valve to prevent excessive pressure.

Product List6 items

Product CodeNumber of cylindersSwept volume at max. 1500 rpmSwept volume at max. 1800 rpm Available
497 m3/h116 m3/h
6146 m3/h175 m3/h
8194 m3/h233 m3/h
4114 m3/h136 m3/h
6170 m3/h204 m3/h
8227 m3/h273 m3/h