Industrial Recirculating Chillers

K4, K6, K9 and K12 Industrial Chiller Range

Our K4, K6, K9 and K12 coolers are powerful laboratory chillers with precision cooling performance. They are built to order to our customers’ requirements and designed for use with applications in laboratory and industrial manufacturing processes. We are trusted chiller experts and have experience supplying chillers from 480W through to 15kW cooling capacity. Offering expert, consultative advice with free technical support from our experienced engineers, research and development team.

Our precision chillers benefit from a compact design with a small foot print, they can be easily moved on casters between applications if required. With a surface mounted fan this range of coolers can effortlessly be stored on or beneath a bench.

Offering great reliability and accurate temperature stability the ATC range of chillers are quiet in operation and available with a range of pumps and standard options to suit your needs. Each chiller is specifically designed and manufactured to suit each customers requirement. We have experience in working with food manufacturers, cosmetics producers, scientific instrument support markets (electron microscopes, X-ray diffraction, ICPMS etc.), semiconductor process, breweries, ophthalmic lens manufacturing equipment, induction heating, and more recently the chillers of choice for commercial digital printing and laser lithography markets worldwide.

With a resilient self-contained design, supporting research and applications that are “always on” ATC chillers offer great reliability with up to 15kW cooling capacity. Available as UL-CSA compliant via ETL Mark option on both indoor and chillers with a housing for outdoor use.

Working with our international customers, our chillers have a variable power supply allowing for easy change of voltage or frequency supply from one region to another at a flick of a switch. Our service is supported by an extensive network of trusted partners and skilled service agents to assist our global clients.

ATC's higher cooling capacity chillers offer reliable cooling from 4.5kW to 14kW. The four sizes are available in a full range of configurations and can be tailored to your requirements.

We can offer service contract options to support your chiller in use, please contact us to discuss your chiller requirements.

The K4 chiller offers 4.5kW of cooling in a versatile package. A full range of options and voltage variants are available, to customise the K4 unit.

4.5kW cooling capacity (at 17⁰C set point)
Permissible temperature in return line +70⁰C
Versatile design, allowing for many standard and non-standard options ·
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Easy filling from the top with tool-less entry panel and simple cap
Splash proof keypad and mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge
Internal by pass valve to adjust pump pressure, as standard
Optional RS485 interface for PC connection
Optional alarm output, potential free change over contact (maximum 30 VA)

The K6 chiller provides total control of temperature to 6.0kW of cooling, with a full range of accessories. ·

6.0kW of cooling (at 17⁰C set point)
Dependable workhorse equipment
Available with standard and optional accessories
Permissible temperature in return line +70⁰C
Versatile design, allowing for many standard and non-standard options ·
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Easy filling from the top with tool-less entry panel and simple cap
Splash proof keypad and mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge
Internal by pass valve to adjust pump pressure, as standard
Optional RS485 interface for PC connection
Optional alarm output, potential free change over contact (maximum 30 VA)

A powerful chiller offering 9.0kW of cooling in a versatile package. A full range of options and voltage variants are available to create a bespoke chiller with exceptionally high cooling capacity.

Exceptionally high 9.0kW cooling capacity (at 17⁰C set point)
Compact space saving design
Versatile design, allowing for standard and non-standard options
Easy filling from the top with tool-less entry panel and simple cap
Permissible temperature in return line +70⁰C
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Low liquid level protection with optical and audible alarm signal
Simple operation and an ergonomic design
Pressure gauge
Internal by pass valve to adjust pump pressure, as standard
Large bright LED display
Splash proof keypad and mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Easy filling from the top with tool less entry panel and simple cap
Optional alarm output, potential free change over contact (maximum 30 VA)
Optional RS-485 communications pack, Modbus protocol

K12 A versatile precision chiller, offering an exceptionally high 14.0kW of cooling in a compact design. ·

Exceptionally high 14.0kW cooling capacity (at 17⁰C set point)
Compact space saving design
Totally reliable workhorse
Simple operation and an ergonomic design Large bright LED display
Standalone filling level indicator, easy to access and change
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge
Internal by pass valve to adjust pump pressure, as standard
Permissible temperature in return line +70⁰C
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Low liquid level protection with optical and audible alarm signal
Optional alarm output, potential free change over contact (maximum 30 VA)
Optional RS-485 communications pack, Modbus protocol

Instruction Manuals/Brochure

Precision Recirculating Chillers Brochure	Download PDF
K4, K6 and K9 Chiller Instruction Manual	Download PDF
K12 Chiller Instruction Manual	Download PDF

Download the full spec sheet here


Cooling capacity (setpoint 20°C, ambient 20°C)	K4/4500W	K6/6000W	K9/9000W	K12/14000W
Physical attributes
Physical dimensions (LxWxH) (mm)	L775 x W510 x H850mm	L775 x W510 x H850mm	L775 x W510 x H850mm	L775 x W510 x H1130mm
Weight (kg)	125	125	125	135
Noise level (dB(A))	68	68	85	85
Toolless access	Yes	Yes	Yes	Yes

Temperature control attributes
Technology	Vapour Compression	Vapour Compression	Vapour Compression	Vapour Compression
Temperature range (standard)	+4°C to +35°C	+4°C to +35°C	+4°C to +35°C	+4°C to +35°C
Control method	PID	PID	PID	PID
Temperature stability (with constant load)	±0.1°C	±0.1°C	±0.1°C	±0.2°C
Temperature resolution	0.1°C	0.1°C	0.1°C	0.1°C

Water circuit attributes
System volume (L)	5	5	5.25	5.5
Pump options	P5, P10, P17, P25	P5, P10, P17, P25	P5, P10, P17, P25	P5, P10, P17, P25
Pressure control (settable pressure relief valve)	Internal, PRV, 20-150psi*not on centrifugal pump	Internal, PRV, 20-150psi*not on centrifugal pump	Internal, PRV, 20-150psi*not on centrifugal pump	Internal, PRV, 20-150psi*not on centrifugal pump
Standard fittings	1/2" BSPPF	1/2" BSPPF	1/2" BSPPF	1/2" BSPPF
	3/8" + 1/2" hose barbs	3/8" + 1/2" hose barbs	3/8" + 1/2" hose barbs	3/8" + 1/2" hose barbs
Standard chemical compatibility	Hexid Fluid, DI Water, Propylene Glycol	Hexid Fluid, DI Water, Propylene Glycol	Hexid Fluid, DI Water, Propylene Glycol	Hexid Fluid, DI Water, Propylene Glycol

Electrical attributes
(90-264Vac, 1/2, 50-60Hz) U-spec	-	-	-	-
(230Vac, 1, 50Hz) 0-spec	Available, 13A	Available, 13A	Available, 20A	-
(115Vac, 1, 60Hz) 1-spec	-	-	-	-
(208-220Vac, 1/2, 60Hz) 2-spec	Available, 11.9A	Available, 11.A	-	-
(400Vac, 3, 50Hz) 3-spec	-	Available, 5A	Available, 10A	Available, 13A
(460Vac, 3, 60Hz) 4-spec	-	-	-	-
5-spec	-	-	-	-
(Switchable 208Vac, 1/2, 60Hz \| 220Vac, 1/2, 60Hz \| 230Vac, 1, 50Hz) 6-spec	Available, see rows -0, -2, -3spec	Available, see rows -0, -2, -3spec	-	-
(Switchable 115Vac, 1, 60Hz \| 220Vac, 1/2, 60Hz \| 230Vac, 1, 50Hz) 7-spec	-	-	-	-
(208Vac, 3, 60Hz) 8-spec	-	Available, 7.5A	Available, 17.5A	Available, 23A
(208-230Vac, 1/2, 50/60Hz) 9-spec	-	-	-	-

Safety and fault indicator
1st party approvals	CE	CE	CE	CE
3rd party approvals	UL-OK on 9, 8 or 3-spec	UL-OK on 9, 8 or 3-spec	UL-OK on 9, 8 or 3-spec	UL-OK on 9, 8 or 3-spec
Empty fluid reservoir alarm	Safety interlock	Safety interlock	Safety interlock	Safety interlock
Low fluid flow alarm	N/A	N/A	N/A	N/A
Temperature out of range alarm	N/A	N/A	N/A	N/A
Compressor HP switch	Standard	Standard	Standard	Standard
Motor thermal overload	Standard	Standard	Standard	Standard
Emergency off	Not present	Not present	Not present	Not present
Warranty options	2 year parts, 1 year labour	2 year parts, 1 year labour	2 year parts, 1 year labour	2 year parts, 1 year labour
	Enhanced warranty options	Enhanced warranty options	Enhanced warranty options	Enhanced warranty options
Overcurrent fault-cleared restart mode	Manual	Manual	Manual	Manual
Overcurrent protection	Standard, via GV2 breaker	Standard, via GV2 breaker	Standard, via GV2 breaker	Standard, via GV2 breaker
Interlock restored, restart mode	Manual by default	Manual by default	Manual by default	Manual by default
	Specify automatic with 'A' suffix on model number	Specify automatic with 'A' suffix on model number	Specify automatic with 'A' suffix on model number	Specify automatic with 'A' suffix on model number

Options available
Remote alarm/power-off; SA00001	Available only with auto-restart	Available only with auto-restart	Available only with auto-restart	Available only with auto-restart
Low temperature pack; SA00002	Available, to -20°C	Available, to -20°C	Available, to -20°C	Available, to -20°C
High temperature pack; SA00003	Available, to +80°C	Available, to +80°C	Available, to +80°C	Available, to +80°C
Water cooled KT; SA00004	-	-	-	-
Water cooled K1; SA00005	-	-	-	-
Water cooled K4/K6/K9/K12; SA00006	Available	Available	Available	Available
Water cooled K3; SA00007	-	-	-	-
Non-return solenoid pack; SA00008	Available	Available	Available	Available
High temperature water circuit w/o heater; SA00009	-	-	-	-
Low flow alarm (KT); SA00010	Available	Available	Available	Available
Onboard RS485 data protocol; SA00011	Available	Available	Available	Available
Standard VFC set; SA00012	Available	Available	Available	Available
In-line Deionising cartridge and fittings; SA00013	Available	Available	Available	Available
Stainless non-return solenoid valve; SA00014	-	-	-	-
Castors to replace rubber feet; SA00015	-	-	-	-
CPC quick release connectors; SA00016	Available, up to 20L/min	Available, up to 20L/min	Available, up to 20L/min	Available, up to 20L/min
Installation kit; SA00017	Available	Available	Available	Available
Stainless steel pump and fittings; SA00018	-	-	-	-
KT filter kit; SA00019	-	-	-	-
Mod for outdoor use; SA00020	Available, to IP54	Available, to IP54	Available, to IP54	Available, to IP54
Particulate filter; SA00021	Available	Available	Available	Available
Flow meter pack; SA00022	Available	Available	Available	Available
Fan speed control (on/off); SA00023	-	-	-	-
Fan speed control (proportional); SA00024	-	-	-	-
Flow meter pack output to RS485; SA00025	Available	Available	Available	Available
Seismic mounts; SA00026	Available	Available	Available	Available
In-line UV decontamination; SA00027	Available	Available	Available	Available
Qwikfoot kit; SA00028	Available	Available	Available	Available
Stainless enclosure; SA00029	Available	Available	Available	Available
De-branding of standard model; SA00030	Available	Available	Available	Available
High ambient fans; SA00031	Available	Available	-	-
Frost protection; SA00041	-	-	-	-
External manifold (2-way); SA00042	Available	Available	Available	Available
External manifold (10-way); SA00050	Available	Available	Available	Available
Remote stop-start; SA00051	Available	Available	Available	Available