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  • RKV Series industrial coolers

    Cooling capacity 9.3 kW to 147 kW

    Compact cooling units and refrigeration systems for the medium capacity range

    The industrial cooling systems of the RKV Series consist of the components refrigerant circuit, water circuit and electrical engineering – completely installed in one housing.

    The basic version is equipped ready for connection and operation, in air-cooled design for frost-free indoor installation.

    Individually configurable and expandable according to customer specifications.

    Circulating media

    Water     Emulsion      Oil

    Flow temperature range

     0 – 40 °C

    Quality and performance features of RKV recooling systems

    Efficiency in the smallest space.

    • Wide range of options due to flexible modular principle
    • Individual and application-specific configuration optimised for a wide range of customer requirements, e.g. special voltages, higher ambient temperatures, multi-circuit system, interface connection, etc.
    • Easy integration into the production layout due to smallest dimensions and individual colour selection
    • Available as stand-alone or built-in unit
    • High precision control
    • Automatic power adjustment
    • Standard temperature stability +/- 1 K
    • On request, flexible control and temperature precision by ACC-control possible up to +/- 0.02 K
    • Also available as continuous-flow cooler or passive cooling system (heat exchanger)

    Main applications:

    Laser, welding and tooling technology, cooling of lathes, milling, grinding and eroding machines, cooling of spindles, machine beds and electronics

    • Compact device tested by us in-house, in test run lasting several hours
    • Compact interior housing for inside installation
    • Device standing on wheels (RKV 1.5 - RKV 10.5)
    • Device standing on tracks (RKV 11.5 - RKV 18.5)
    • Painted in RAL 7012
    • Air-cooled condenser with copper pipes and aluminium lamellae, extremely efficient
    • Axial fan, extremely low-noise and maintenance-free with contact protection
    • CFC-free coolant
    • Hermetic compressor, 100 % suction-gas cooled
    • Evaporator as plate heat exchanger or pipe coil heat exchanger
    • Thermostatic expansion valve for coolant injection
    • High and low-pressure switch
    • Water circuit with tank, pump, manometer, pump bypass
    • Automatic water filling via float gauge
    • Piping of the water circuit made from stainless material (iron-free)
    • Water tank made from plastic, heat-insulated
    • Pumps made from bronze or stainless steel
    • Digital controller with target and actual value display
    • Switching and control elements completely wired
    • External on/off switching
    • Potential-free collective fault indicator
    • Automatic power adjustment
    • Optical water level display
    • CE-compliant
    • Cooling technology designed according to EN 378 part 2
    • Electronics designed according to EN 60204
    • RoHS and REACH-compliant
    • Outdoor installation
    • Air filter mat
    • Radial fans
    • Split design
    • Water-cooled condenser
    • Low-noise design
    • Cold fluid outlet temperature < +8 °C
    • Water temperatures up to 40 °C
    • Temperature stability ± 0.2 K
    • Refrigeration gauge for high and low-pressure side
    • Overflow valve
    • Fixed bypass
    • Multi-circuit system
    • Heat recovery
    • Flow monitor with analog or digital signal
    • Water filter
    • Gate valves in flow and return
    • Tank filling, pressureless, from outside
    • Automatic water refilling
    • Tank heating for temperature control
    • Check valves and solenoid valves for the water circuit
    • (consumer higher than coolant)
    • Water circuit made from stainless or PVC for deionised water
    • Conductance monitoring
    • Pump switch-off
    • Air filter mat monitoring
    • Wire marking
    • Continuously variable speed regulation of the fans
    • Heavy-duty connector (e.g. Harting)
    • 24 V AC/DC control voltage
    • Special voltages and frequencies (50/60 Hz)
    • Limit temperature monitoring
    • Differential temperature control
    • External temperature sensor
    • Cabinet heating, cabinet fan
    • Bus connection, e.g. profibus DP
    • Individual fault indicators (in the plain text display or as bit technology)
    • RAL special colours upon request




















































































































































































    Series type RKV Unit 1.5 2.5 3.5 4.5 5.5
    Cooling performance at
    Water inflow kW
    +10 °C 6,4 7,6 9,0 11,0 13,9
    +15 °C 7,8 9,2 10,9 13,0 16,5
    +20 °C 9,3 11,0 13,0 16,0 19,7
    Compressor drive kW 1,7 2 2,4 2,9 3,5
    Air capacity m³/h 4500 4500 4500 4500 4500
    Number of fans 1 1 1 1 1
    Pump capacity m³/h 1,2 1,5 1,8 2,2 2,7
    Pump drive kW 0,65 0,65 0,65 0,65 0,65
    Pump pressure bar 4 3,9 3,6 3,4 3,1
    Connection capacity kW 3,2 3,5 3,9 4,4 5
    Tank contents l 60 60 60 60 60
    Water connections DN 25 25 25 25 25
    Dimensions about
    Width mm 600 600 600 600 600
    Length mm 600 600 600 600 600
    Height mm 1980 1980 1980 1980 1980
    Empty weight: about kG 165 190 220 240 260





















































































































































































    Series type RKV Unit 6.5 7.5 8.5 9.5 10.5
    Cooling performance at
    Water inflow kW
    +10 °C 18,0 22,0 25,0 29,0 33,0
    +15 °C 22,0 27,0 30,0 35,0 40,0
    +20 °C 26,0 32,0 36,0 42,0 48,0
    Compressor drive kW 4,7 5,5 6,2 7,2 8,2
    Air capacity m³/h 12000 12000 12000 12000 15900
    Number of fans 1 1 1 1 1
    Pump capacity m³/h 3,7 4,6 5,1 6 6,8
    Pump drive kW 1,2 1,2 1,2 2,3 2,3
    Pump pressure bar 3,8 3,4 3 2,8 2,4
    Connection capacity kW 7,1 7,9 8,6 10,7 12,1
    Tank contents l 150 150 150 150 150
    Water connections DN 40 40 40 40 40
    Dimensions about
    Width mm 750 750 750 750 750
    Length mm 750 750 750 750 750
    Height mm 1980 1980 1980 1980 1980
    Empty weight: about kG 315 325 350 390 480






















































































































































































    Series type RKV Unit 11.5 12.5 13.5 14.5 15.5
    Cooling performance at
    Water inflow kW
    +10 °C 37,0 43,0 50,0 58,0 68,0
    +15 °C 45,0 51,0 60,0 71,0 82,0
    +20 °C 55,0 62,0 72,0 84,0 98,0
    Compressor drive kW 9,3 11,1 12,4 14,4 16,2
    Air capacity m³/h 31800 31800 31800 31800 31800
    Number of fans piece 2 2 2 2 2
    Pump capacity m³/h 7,8 8,6 10,3 12,2 13,8
    Pump drive kW 2,3 2,3 4 4 4
    Pump pressure bar 3,3 3 5,3 5 4,5
    Connection capacity kW 14,8 16,6 19,6 21,6 23,4
    Tank contents l 200 200 200 200 200
    Water connections DN 40 40 40 40 40
    Dimensions about
    Width mm 750 750 750 750 750
    Length mm 1500 1500 1500 1500 2250
    Height mm 2010 2010 2010 2010 2010
    Empty weight: about kg 580 590 610 630 650













































































































































    Series type RKV Unit 16.5 17.5 18.5
    Cooling performance at
    Water inflow in kW
    +10 °C 75,0 87,0 102,0
    +15 °C 91,0 105,0 120,0
    +20 °C 108,0 126,0 147,0
    Compressor drive kW 18,6 21,6 24,3
    Air capacity m³/h 47700 47700 47700
    Number of fans piece 3 3 3
    Pump capacity m³/h 15,7 18 21
    Pump drive kW 4 4 4
    Pump pressure bar 4,2 4 3,5
    Connection capacity kW 27,4 30,4 33,1
    Tank contents l 400 400 400
    Water connections DN 50 50 50
    Dimensions about
    Width mm 750 750 750
    Length mm 2250 2250 2250
    Height mm 2010 2010 2010
    Empty weight: about kg 820 850 890

    Water temperature range: from +8 °C to +25 °C (other ranges on request)
    Type of cooling: air-cooled using axial fan (water-cooled or using radial fan on request)
    Electrical connection: 3x400 V PE 50 Hz (other voltages and frequencies on request)
    Designed ambient temperature: +32 °C (higher and lower temperatures on request)
    Range of application of the industrial cooler: from +8 °C to +42 °C ambient temperature (higher and lower temperatures on request)
    Circulation medium: drinking water (according to specification) with a spread of about 5K between water inlet and outlet (other ranges on request)
    Technical modifications and errors reserved


    Product views RKV series

    Direct inquiry

    You already know which RKV cooler you need? Or would you like advice from our specialists before? Make your inquiry here.

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    Used machines

    Our standard industrial coolers are also available both from stock and as reconditioned used units. We are constantly expanding the range of our used machinery market. It’s worth a look. Maybe there is something for your application.

    Used machines

    Main applications

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