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LAUDA Variocool

Circulation chillers for variable use in laboratory, mini-plant and production for temperatures from -20 up to 40 °C

LAUDA Variocool

The LAUDA Variocool circulation chillers offer a broad performance spectrum for demanding temperature control tasks. The color TFT screen makes operation easy. A USB interface and an alarm contact are integrated as standard features. Additional interfaces are available as accessories. They are located in the front of the device, which means they are easy to access.

The circulation chillers with their multitude of options are very well suited to a number of different areas of application. Optional pumps, for example, enable higher supply pressure. Optional heating units, which are adapted to the cooling capacity, enable the quick heating of the connected application when needed.

Application examples

  • Central cooling water supply in laboratories
  • Cooling of analytical devices
  • Temperature control of bioreactors
  • Supply to cooling traps


LAUDA Variocool brochureDownload a PDF
of our Varciocool brochure:

LAUDA Variocool Brochure (2.5 MB)

  The Variocool advantages Your benefits
  • 13 models in air or water-cooled design with cooling capacities from 600 W up to 10 kW
  • All models with electronic expansion valve
  • Due to their compact design, units up to 2 kW of cooling capacity can be placed under the laboratory table
  • The appropriate solution to every requirement
  • Good temperature control and cost savings thanks to reduced energy consumption
  • Saves valuable lab space
  • Display and operation via color TFT screen and membrane keyboard
  • Electronic fill gauge on the display and low level alarm when fluid level too low
  • Easy and clear setup options
  • Early detection of insufficient fluid
  • Options:
    • high power pumps
    • heaters
    • flow control
    • outdoor installation
    • use with DI water
    • noise reduction
  • Flexible customization to applications
  • USB interface and alarm contact standard features in the front of the device
  • Retrofittable interfaces as accessory:
    • analog module
    • RS-232/485 interface
    • contact modules
    • profibus module
    • Pt100/LiBus module
  • Easy accessibility
  • Flexible control options
  • Front grid can be easily removed without tool
  • Tower design for larger models (from VC 7000)
  • Microchannel condensers in all air-cooled models
  • All models (except VC 600) with adjustable bypass and pressure gauge
  • Easy to clean condenser
  • Space-saving setup
  • Reduced footprint and lower refrigerant quantity
  • Connection of pressure sensitive applications
LAUDA Variocool Circulation Chillers

Variocool Circulation chillers with cooling capacities up to 2 kW

Variocool circulation chillers function in an operating temperature range of -20 to 40 °C. Optional heaters can be added to increase the maximum temperature to 80 °C. For greater pressure requirements, optional pumps are available with the VC 1200 version or higher. With the exception of the VC 600, all models are also available as water-cooled versions. All devices are equipped with lockable casters. The compact dimensions of the models from VC 600 to VC 2000 (W) allows to place them under the laboratory table.

Variocool Circulation chillers with cooling capacities up to 5 kW

The models VC 3000 and VC 5000 offer cooling capacities of 3 and 5 kW. They are also available in water-cooled design (W). For flexible adaption to different applications the chillers can also be delivered with optional high-power pumps or heaters. Further options are a flow control, outdoor-installation or a noise reduction for the types VC 5000 and VC 5000 W.

Variocool Circulation chillers with cooling capacities up to 10 kW

The highly efficient tower design circulation chillers provide cooling capacities between 7 and 10 kW. Options like heating or high-power pumps add to the devices‘ areas of application. The models are available in air or water-cooled design. All models are equipped with casters which can be controlled and locked.

Select up to 3 products to compare: Compare Products

Variocool Circulation chillers with cooling capacities up to 2 kW

Technical features VC 600 VC 1200 VC 1200 W VC 2000 VC 2000 W
Select to compare:
Working temperature range °C -20...40 -20...40 -20...40 -20...40 -20...40
Working temperature range
with optional heater
°C -20...80 -20...80 -20...80 -20...80 -20...80
Temperature stability ±K 0.05 0.05 0.05 0.05 0.05
Cooling output at 20 °C kW 0.6 1.2 1.2 2.0 2.0
Pump pressure max. bar 0.9 0.9 0.9 0.9 0.9
Pump flow L/min 28 28 28 28 28
Cat. No. 208-220 V; 60 Hz LWG 275* L000685 LWG 882 L000686 LWG 883
Cat. No. 115 V; 60 Hz L000683
 

Summary

Summary

Summary

Summary

Summary

* 220 V; 60 Hz


Variocool Circulation chillers with cooling capacities up to 5 kW

Technical features VC 3000 VC 3000 W VC 5000 VC 5000 W
Select to compare:
Working temperature range °C -20…40 -20…40 -20…40 -20…40
Working temperature range
with optional heater
°C -20…80 -20…80 -20…80 -20…80
Temperature stability ±K 0.05 0.05 0.05 0.05
Cooling output at 20 °C kW 3.0 3.0 5.0 5.0
Pump pressure max. bar 3.2 3.2 3.2 3.2
Pump flow L/min 37 37 37 37
Cat. No. 208-220 V; 60 Hz L000687 LWG 884 L000688 * L000694 *
 

Summary

Summary

Summary

Summary

* 208-220 V; 3/PE; 60 Hz


Variocool Circulation chillers with cooling capacities up to 10 kW

Technical features VC 7000 VC 7000 W VC 10000 VC 10000 W
Select to compare:
Working temperature range °C -20…40 -20…40 -20…40 -20…40
Working temperature range
with optional heater
°C -20…80 -20…80 -20…80 -20…80
Temperature stability ±K 0.1 0.1 0.1 0.1
Cooling output at 20 °C kW 7.0 7.0 10.0 10.0
Pump pressure max. bar 3.2 3.2 3.2 3.2
Pump flow L/min 37 37 37 37
Cat. No. 208-220 V; 3/PE; 60 Hz L000689 L000695 L000690 L000696
 

Summary

Summary

Summary

Summary

Variocool accessories (excerpt)

Cooling water tubing, EPDM
Temperature range from -40...100 °C and pressure range max. 20 bar

Cat. No. Description di (mm) de (mm)
RKJ 031 EPDM tubing, fiber-reinforced 13 19
RKJ 032 EPDM tubing, fiber-reinforced 19 27
RKJ 033 EPDM tubing, fiber-reinforced 25 34


Polymer tubing

EPDM tubing

Cat. No. di (mm) Temperature range °C
RKJ 111 9 10...90
RKJ 112 12 10...90


Tube clips, stainless steel

To secure tubings

Cat. No. Description
EZS 032 Tube clip 16-27 mm,1/2" external Ø

di = internal diameter; de = external diameter


Heat transfer liquids

Designation Temperature range Cat. No. 5 L Cat. No. 10 L Cat. No. 20 L
Aqua 90 5…90 °C LZB 120 LZB 220 LZB 320
Kryo 30 -30…90 °C LZB 109 LZB 209 LZB 309


Interface modules

Cat. No. Description
LRZ 912 Analog module, 2 x In, 2 x Out, 0(4)…20 mA or 0…10 V
LRZ 913 RS 232/485 interface, electrically isolated, 9-pin SUB-D
LRZ 914 Contact module NAMUR, 1 x In, 1 x Out, NE 28, 2 DIN sockets
LRZ 915 Contact module SUB-D, 3 x In, 3 x Out, 15-pin SUB-D
LRZ 917 Profibus interface, electrically isolated, 9-pin SUB-D
LRZ 918 Pt100/LiBus module

Options Variocool

For all Variocool models, different options can be ordered. The options can only be fitted ex-works. Please check the table below for compatibility of options with the regarding circulation chiller type.

Options

   
Heaters For all types. Extension of the temperature up to 80 °C.
High-power pumps For all types, except VC 600.
Flow control For all types.
Outdoor installation For all types. An additional protection with a roof is necessary.
DI water For VC 600 to VC 2000 W. Corrosion resistant construction for use with deionized water.
Noise reduction For models VC 5000 up to 10000 W.


Options – not power supply dependent

Options Cat. No. VC
600
VC 1200* VC 1200 W* VC 2000* VC 2000 W* VC 3000 VC 3000 W VC 5000 VC 5000 W VC 7000 VC 7000 W VC 10000 VC
10000
W
Flow control 1/2" LWZ 118
Flow control 3/4" LWZ 119
Outdoor installation LWZ 120
Outdoor installation LWZ 121
Outdoor installation LWZ 122
Outdoor installation LWZ 123
DI water LWZ 124
DI water LWZ 125
Noise reduction LWZ 126
Noise reduction LWZ 127
Noise reduction LWZ 128


Options – power supply dependent

115 V; 60 Hz 220 V; 60 Hz 208-220 V; 60 Hz 208-220 V; 3/PE; 60 Hz
Options Cat. No. VC
600
VC
600
VC 1200* VC 1200 W* VC 2000* VC 2000 W* VC 3000 VC 3000 W VC 5000 VC 5000 W VC 7000 VC 7000 W VC 10000 VC
10000
W
Heater
1.15 kW
LWZ 4095
Heater
1.35 kW
LWZ 2095
Heater
1.20-1.35 kW
LWZ 8095
Heater
3.65-4.1 kW
LWZ 3096
Heater
7.35-8.2 kW
LWZ 3097
Pump, 3.2 bar
37 L/min**
LWZ 8100
Pump, 3.2 bar
37 L/min**
LWZ 8101
Pump, 4.8 bar
37 L/min**
LWZ 2103
Pump, 4.8 bar
37 L/min**
LWZ 2104
Pump, 4.8 bar
37 L/min**
LWZ 2102
Pump, 4.8 bar
37 L/min**
LWZ 3105
Pump, 5.0 bar
60 L/min**
LWZ 3106

230 V; 50 Hz 400 V; 3/N/PE; 50 Hz
Options Cat. No. VC
600
VC 1200* VC 1200 W* VC 2000* VC 2000 W* VC 3000 VC 3000 W VC 5000 VC 5000 W VC 7000 VC 7000 W VC 10000 VC
10000
W
Heater 1.5 kW LWZ 1095
Heater 4.5 kW LWZ 2096
Heater 9.0 kW
LWZ 2097
Pump, 3.2 bar
37 L/min**
LWZ 1100
Pump, 3.2 bar
37 L/min**
LWZ 1101
Pump, 4.8 bar
37 L/min**
LWZ 1103
Pump, 4.8 bar
37 L/min**
LWZ 1104
Pump, 4.8 bar
37 L/min**
LWZ 1102
Pump, 4.8 bar
37 L/min**
LWZ 2105
Pump, 5.0 bar
60 L/min**
LWZ 2106

100 V; 50/60 Hz 200 V; 50/60 Hz 200 V; 3/PE; 50/60 Hz
Options Cat. No. VC
600
VC 1200* VC 1200 W* VC 2000* VC 2000 W* VC 3000 VC 3000 W VC 5000 VC 5000 W VC 7000 VC 7000 W VC 10000 VC
10000
W
Heater 1.0 kW LWZ 6095
Heater 1.1 kW LWZ 5095
Heater 3.4 kW
LWZ 4096
Heater 6.8 kW LWZ 4097
Pump, 3.2 bar
37 L/min**
LWZ 5100
Pump, 3.2 bar
37 L/min**
LWZ 5101
Pump, 4.8 bar
37 L/min**
LWZ 5103
Pump, 4.8 bar
37 L/min**
LWZ 5104
Pump, 4.8 bar
37 L/min**
LWZ 5102
Pump, 4.8 bar
37 L/min**
LWZ 4105
Pump, 5.0 bar
60 L/min**
LWZ 4106

* Use with high-power pumps causes a change of the height of the housing from 650 mm to 790 mm.
** Using such a pump can change the available cooling capacity

Pump performance curves for Variocool standard and high power pumps

LAUDA Variocool Pump Performance Curves