Air cooled water chiller is also called air chiller or air cooled chiller with cooling capacity from 1.65KW to 202KW and adjustable temperature control range 5 degree to 30 degree,this kind of air chiller equips with brandd copeland,Danfoss,Sanyo or Pannasonice Hermetic  scroll compressors depend on detailed requirments. we have 3 or 4 refrigerant circuits for chiller models from AC-25AD TO AC-60AF according to chiller refrigeration capacity. each circuit can work or stop  independtly for chiller safetly and energy saving considering.