Laboratory Chiller - Recirculating Chillers 1000-3200W

K1 and K3 Chiller Range

Applied Thermal Control recirculating chillers are built to order to our customers’ requirements, they are designed for use with applications in laboratory, research and manufacturing processes. With over 20 years’ experience supplying chillers from 480W through to 15kW cooling capacity we offer expert, supportive and consultative pre-sales 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 or experiments and most of the range can effortlessly be stored on or beneath a bench. Offering accurate temperature control to 0.1°C precision with a choice of recirculating chillers, water-to-water heat exchangers and air blast coolers.

Providing great reliability and consistent 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 robust 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 outdoor chillers.

The use of precision recirculating chillers can help to comply with organisational environmental policies. By using accurately cooled house water, processes can be economical and environmentally friendly.

We supply worldwide, 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. This is backed by an extensive network of trusted partners and skilled service agents to support our global customers.

We can offer service contract options to support your chiller in use. With UK based factory trained emergency call out engineers who can assess and if necessary fix on site, minimising the need to return units to base for repair resulting in reduced application down time.

The K1 chiller is a discreet design, quiet in operation and offers a full 1.75kW of cooling, with a range of accessories. Originally designed for use in a laboratory, these chillers can be customised for a specific application and are suitable for any indoor environment.

Compact and robust design
Pressure gauge Internal by pass valve to adjust pump pressure, as standard
Optional RS485 interface for PC connection
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Low liquid level protection with optical and audible alarm signal
The K1 has an exceptionally high 1.75kW cooling capacity
Best used with Hexid heat transfer fluid
K1 chillers are built to specification/order
Standalone filling level indicator, easy to access and change
Simple operation and an ergonomic design
Large bright LED display
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation

A full 3.2kW of cooling in a very compact and robust chiller. The chiller has a full range of optional accessories.

K3 chillers are built to specification/order
Hexid heat transfer fluid extends the life of recirculating chillers, prevents frost and protects against growth of damaging bacteria and algae
Designed for laboratory, but with a robust steel enclosure so can be deployed in almost any environment
Compact and robust design
K3 units can be customised to fit specific application
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
Optional RS485 interface for PC connection
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Plastic moulded bath tanks, suitable for DI and nonferrous applications
Low liquid level protection with optical and audible alarm signal

Instruction Manuals/Brochure

Precision Recirculating Chillers Brochure	Download PDF
K1 and K3 Chiller Instruction Manual	Download PDF

Download the full spec sheet here


Cooling capacity (setpoint 20°C, ambient 20°C)	K1/1750W	K3/3200W
Physical attributes
Physical dimensions (LxWxH) (mm)	545 x 420 x 575	540 x 550 x 713
Weight (kg)	66	82
Noise level (dB(A))	68	68
Toolless access	no	No

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

Water circuit attributes
System volume (L)	2.5	3.5
Pump type	1) 5L/min Rotary vane (PD)	1) 5L/min Rotary vane (PD)
	2) 10L/min Rotary vane (PD)	2) 10L/min Rotary vane (PD)
	3) 17L/min Rotary vane (PD)	3) 17L/min Rotary vane (PD)
Pump capability	1) 6bar@5L/min	1) 6bar@5L/min
	2) 6bar@10L/min	2) 6bar@10L/min
	3) 6bar@17L/min	3) 6bar@17L/min
Pressure control (settable pressure relief valve)	Internal, PRV, 20-150psi	Internal, PRV, 20-150psi
Standard fittings	1/2" BSPPF	1/2" BSPPF
	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

Electrical attributes
Option 1	1Ø, 115V, 60Hz, 11.5A	1Ø, 230V, 50Hz, 13A
Option 2	1Ø, 230V, 50Hz, 7.3A	(208-220Vac, 1/2, 60Hz) 2-spec, 13.5A
Option 3	(208-220Vac, 1/2, 60Hz) 2-spec, 8A	Switchable (see below)
Option 4	Switchable (see below)
Option 5
Switchable configuration 1Ø, 115V/60Hz, 220V/60Hz, 230V/50Hz	Yes
Switchable configuration 1Ø, 208V/60Hz, 220V/60Hz, 230V/50Hz	Yes	Yes

Safety and fault indicator
1st party approvals	CE	CE
3rd party approvals	UL-OK on 9-spec	UL-OK on 9-spec
Over-current restart mode	Manual	Manual
Interlock-restored restart mode	Automatic	Automatic
Empty fluid reservoir alarm	Visual, lamp	Visual, lamp
Low fluid flow alarm	Visual, lamp	Visual, lamp
Temperature out of range alarm	Visual, lamp	Visual, lamp
Compressor HP switch	Standard	Standard
Motor thermal overload	Standard	Standard
Emergency off	Standard, via MCB	Standard, via MCB
Warranty options	2 year parts, 1 year labour	2 year parts, 1 year labour
	Enhanced warranty options	Enhanced warranty options

Options available
Remote alarm/power-off; SA00001	Available	Available
Low temperature pack; SA00002	Available, to -20°C	Available, to -20°C
High temperature pack; SA00003	Available, to +65°C	Available, to +65°C
Water cooled K1; SA00005	Available	N/A
Water cooled K3 SA00007	N/A	N/A
Non-return solenoid pack; SA00008	Available	Available
High temperature water circuit w/o header; SA00009	Available	Available
Low flow alarm (KT); SA00010	Standard	Standard
Onboard RS485 data protocol; SA00011	Available	Available
Standard VFC set; SA00012	Available	Available
In-line Deionising cartridge and fittings; SA00013	Available	Available
Stainless non-return solenoid valve; SA00014	Available	Available
CPC quick release connectors; SA00016	Available	Available
Installation kit; SA00017	Available	Available
Stainless steel pump and fittings; SA00018	Standard	Standard
Mod for outdoor use; SA00020	Available, to IP54	Available, to IP54
Particulate filter; SA00021	Available	Available
Flow meter pack; SA00022	Available	Available
Fan speed control (on/off); SA00023	Available	Available
Fan speed control (proportional); SA00024	Available	Available
Flow meter pack output to RS485; SA00025	Available	Available
Seismic mounts; SA00026	Available	Available
In-line UV decontamination; SA00027	Available	Available
Qwikfoot kit; SA00028	Available	Available
Stainless enclosure; SA00029	Available	Available
External manifold (2-way); SA00042	Available	Available
External manifold (10-way); SA00050	Available	Available
High ambient pack	N/A	Available, to +45°C
Shelter pack	Available	Available
Filter on outlet/inlet	Available	Available

Please contact us for further details on this chiller range.

Remote Alarm Box

The compact remote alarm supplied by Applied Thermal Control is sited close to the application, allowing personnel to monitor the chiller, without needing to see the chiller. The display indicates normal operation, or shows alarms for temperature and fluid (both flow and level). An audible siren also sounds in an alarm condition. The alarm box can be mounted up to 15 metres away from the chiller, and is fitted with an emergency stop switch that will turn off the chiller should it be necessary.

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Low Temperature Pack

This low temperature option can be fitted to allow a chiller to be operated below +4°C and to be controlled down to -15°C.

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Heater Pack

The normal upper limit of the process temperature is 35°C. It is possible to raise this up to 65°C by means of a heater pack (higher temperatures can be achieved, following discussion with an ATC salesperson). Heater packs are typically installed into chiller systems where it is necessary to maintain a specific temperature range, and the cooling capacity of the chiller alone is not sufficient to achieve the desired range.

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Water-Cooled Condensers

Water-cooled condensers are commonly used in chillers to remove heat from the refrigerant and transfer it into a primary cooling circuit. In a recirculating chiller system, the refrigerant absorbs heat from the process or space, and transfers it to the water-cooled condenser.

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Non Return / Solenoid Valve

The non-return/solenoid option can be fitted to prevent back siphoning of fluid into the chiller during maintenance.

They are recommended when the chiller and application are at different levels (more than 2 metres height difference), or where a long length of flexible tubing is used between the chiller and the application. It is also advisable to add non-return/solenoid valves in situations where pipe-runs will be going up into ceiling ducts.

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