K1 1.75kW Recirculating Chiller
The K1 Recirculating Chiller is designed to provide dependable process cooling for applications requiring greater cooling capacity without compromising temperature stability. Offering 1.75kW of cooling with ±0.1°C temperature stability, the K1 is well suited to laboratories, industrial processes, and OEM equipment where reliable performance is essential.
As part of ATC’s transition to low-GWP refrigerants, the G02 recirculating chiller is the recommended next-generation equivalent, combining modern refrigerant technology with the same commitment to precision and reliability.
Key Features
1.75kW cooling capacity
±0.1°C temperature stability
Compact industrial design
Integrated castors for easy positioning
Optional RS485 and volt-free contacts
Comprehensive process protection and alarm functions
Suitable for laboratory, industrial, and OEM applications
Enclosure Size
590 x 420 x 545mm
Power Supply Options
(208-230Vac, 1~/2~, 50/60Hz) 9-spec
Cooling Capacity
1.75kW
Duty at +20°C ambient, Setpoint +20°C (kW)Temperature Stability
Duty at +20°C ambient, Setpoint +20°C (kW)Temperature Stability
Temperature Range
+4°C to +20°C
Document downloads
K1
1.75kW
Administrative Data
ATC Model Name
K1
ATC G-Series Equivalent
G02
Physical Attributes
Physical Dimensions (mm)
H590 x W420 x D454mm
Construction
Sheet steel gauge 1.5mm
Epoxy polyester powder coat
Epoxy polyester powder coat
Mounting Type
Castors, 2 swivel, 2 braked (standard)
Acceptable Environment
Indoor (standard)
Dry Weight (kg)
66kg
Wet Weight (kg)
69kg
Noise Level (dB(A)) at 1 metre
68dB(A), standard fan
Product IP Rating
IP20
Toolless Access
No
Enclosure Drawing Number
MA024
Airfreight
Ok
Sea freight
Ok
Temperature Control Attributes
Cooling/Refrigeration Technology
Vapour Compression
Compressor Type
Fixed Speed Recip.
Evaporator Technology
Brazed plate heat exchanger
Duty at 20°C Ambient, Setpoint +20°C (kW)
1.75kW
Refrigerant & Charge
R134a, 0.68kg
Ambient Temperature Range (Standard)
+4°C to +20°C
Ambient Temperature Range (Extended)
+4°C to +35°C
Temperature Stability (with Constant Load)
±0.1°C
Temperature Resolution
±0.1°C
Water Circuit Attributes
Designed Process Fluid Flowrate
5-17L/m (0.3-1m³/h)
Maximum Design Pressure
0-8bar (0-116psi)
Process Temperature Range (Standard)
+4°C to +35°C
Process Temperature Range (Extended)
-20°C to 60°C
Maximum Return Line Temperature (Standard)
60°C
Pump Options
P5, P10, P17
System Volume
2.5L
Tank Type
Stainless steel, header
Flow and Pressure Control
Internal, PRV, 20-150psi
Connection Size *Fittings to convert size as needed available
1/2″ BSPPF
3/8″ + 1/2″ hose barbs
3/8″ + 1/2″ hose barbs
Construction Materials
Steel enclosure
Fluid Compatibility
Hexid Fluid (Propylene Glycol)
Coolflow (Ethylene Glycol)
Coolflow (Ethylene Glycol)
Electrical Attributes
(208-230Vac, 1~/2~, 50/60Hz) 9-spec
Available
Safety Interlocks, Protections, Standards, and Indicators
1st Party Approvals
CE
Empty Fluid Reservoir Alarm
Process Stop Interlock
Low Fluid Flow Alarm
Visual, Lamp
Temperature Out of Range Alarm
Visual, Lamp
RS485 Comms
Available, SA00011
Volt-Free Contacts (Temp, Level, Flow)
Available, SA00012
Compressor HP Switch
Standard
Interlock Restored, Restart Mode
Automatic
Overcurrent Fault-Cleared Restart Mode
Manual
Overcurrent Protection
Standard, Via MCB
Motor Thermal Overload
Internal, Automatic Restart
Warranty Options
2 years parts, one year labour
Configurations
Water-Cooled
Available, K1xxxxxW
