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Compact Coolers RKV

Series RKV

This model series was developed and further improved upon by DELTATHERM® on the basis of comprehensive research and long years of practical experience. Through a range of measures, cooling capacity, efficiency and operational reliability were further improved and thereby a trend-setting cooling water-heat exchanger was designed. The DELTATHERM® industrial cooling systems of the RKV series consist of the components cold fluid circuit, water circuit and electrical technology, completely fitted in a housing. The cooling of the circulation medium (normally water, optionally also antifreeze, oil or deionised water) is carried out by a heat exchanger, which is known as the evaporator. The DELTATHERM® industrial coolers, which are ready for connection and tested in our in-house performance testing equipment are already completely equipped in the basic version. For customer-specific requirements a comprehensive option package is available, through which we are able to fulfil all of our customers' technically feasible wishes.

The cooling circuit

The cold fluid circuit is mainly made of a compressor, an air-cooled condenser, expansion valve and evaporator. In accordance with the process requirements, also radial condensers (for the air duct connection), split condensers (outer/inner unit) and a water-cooled condenser version are offered. We only use CFC-free coolants such as e.g. R134a and R407C. All cooling components are made by renowned brand manufacturers and guarantee reliability, long service life and global availability. The entire cooling circuit is designed for the optimal and economic function of the industrial cooler and corresponds to the most recent Standards of the CE directive and of DIN EN 378.

The electronics circuit

The entire electronics is designed for the optimal functioning of the industrial cooler and corresponds to the latest standards of the CE directive and of DIN EN 60204. In all models of the RKV series, the precise temperature control is carried out by a microprocessor-controlled digital temperature controller. All RKV industrial coolers are suitable for indoor installation and can optionally also be installed outside.

The water circuit

The components of the water circuit are as standard made from stainless material and completely fitted in the stable industrial housing. The water tank is made from very stable and water-neutral plastic with tank cover (stainless steel tank as an option). The hydraulic decoupling of the water circuit from the cold fluid circuit enables endless areas of application in industry. The complete water circuit is fitted in the device with a circulation pump, pump manometer, pump overflow valve for pump protection, complete pipework as well as a diffusion-proof and highly efficient insulation. The water circuit (piping, evaporator and pumps) is designed for a defined flow volume and pressure. Different pumps are available for special requests (more pressure and/or higher flow volume). Circulation media other than water (e.g. oil) are, of course, also feasible. The design as a throughflow cooler (without tank, possibly without pump) is also feasible.

Short specification of the standard equipment

  • Compact device tested by us in-house, in test run lasting several hours
  • Compact interior housing for inside installation
  • Device standing on pedestals
  • 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 adaptation
  • 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

Available options

  • Outdoor installation
  • Air filter mat
  • Air filter mat monitoring
  • Radial fans
  • Split design
  • Water-cooled condenser
  • Continuously variable speed regulation of the fans
  • Noise-reduced design
  • Overflow valve
  • Fixed bypass
  • Wire marking
  • Heavy-duty connector (e.g. Harting)
  • Cooling manometer for high and low-pressure side
  • Coolant outlet temperature < +8 oC
  • Flow monitor with analog or digital signal
  • Waterfilter
  • Gate valve in flow and return
  • Check valves and solenoid valves for the water circuit (consumer higher than coolant)
  • Tankfilling, pressureless from outside
  • Automatic water refilling
  • Water temperatures up to 40°C
  • Tank heating for temperature control
  • Pump switch-off
  • Water circuit made of PVC for deionised water
  • Conductance monitoring
  • Multi-circuit system heat recovery
  • 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. pro bus DP
  • Individual fault indicators (in the plain text display or as bit technology)