RKS JM Compact Chiller With Water Tank (Air Cooled / Water Cooled) High Precision Temperature Control + Inverter Driven
High Pressure Pump + High Ambient Temp Compatibility

Cooling Capacity
(50/60Hz)
1.3/1.5kW(RKS401/402J-MV)
1.8/2.0kW(RKS602J-MV)
2.2/2.5kW(RKS752/753J-MV)
4.9/5.3kW(RKS1502/1503J-MV)
Operable
Ambient
Temperature
5 - 45 ℃
Working Liquid Temperature
5 - 40 ℃
Temperature
Control Accuracy
±0.1℃
  • The electronic expansion valve control achieves ±0.1 ℃ high precision temperature control that translates to increased equipment production accuracy and quality.
  • Our standard built-in high-pressure pump is inverter driven, thus achieving the same performance specifications even in regions that have different power frequencies.
  • Wide Operable Ambient Temperature Range of 5 - 45 ℃. Working Liquid Temperature Range of 5 - 40 ℃ Supports Many Working Environments.
  • CE and UL Targeted 4-Model Lineup
    Three Single-Phase 200 to 230 V Power Model: RKS402J-MV, RKS602J-MV※, RKS752J-MV, and RKS1502J-MV.
    The 4 models endling in -00000, -01000, and -11000 are CE and UL standards compliant. Models with other model numbers are available as with CE compliance via special order.
    • UL in progress for RKS602J-MV.
RKS752/753J-MV・RKS1502/1503J-MV
(Left) RKS752/753J-MV
(Right) RKS1502/1503J-MV
mark
（UL standard）

Simple and Reliably Designed Controller + Substantial Functionality

Easy operation with just the flick of a switch. Alarm details via error code display for quick recovery.

Safe Design and Controller

Output Signals

  • Operation Signal
  • Alarm Signal
  • Remote Signal

Operation Signal

  • Freeze-Prevention Mode
  • Warm Up Mode
  • Discharge Pump-Only-Operation
  • Automatic Recovery After Power Outage etc.

Large Capacity Tank with Wide Water Supply Port

High Capacity

Φ100 mm large water supply port for easy cleaning!
The high capacity tank means less frequent water shortage warnings, less frequent water supplying, and less change in water temperature due to changing loads.
A built-in blue LED lit water indicator for easy confirmation of water level.

Wide mouth water supply port for easy tank cleaning.
Wide mouth water supply port for
easy tank cleaning.
Easy-to-Check LED-Lit Water Level Gauge
Easy to check
LED lit water level gauge.

Easy Filter Cleaning

filter

Comes standard with a filter to help prevent clogging!
Easy tool-less removable filter design. Filter can be directly cleaned for easy removal of dirt and reduced manpower, adding to chiller operating stability of the chiller.

Specifications (Standard Products)

Air Cooled Water Cooled
401J-MV 402J-MV 402J-MVW
Performance
Specifications 		Cooling Capacity (50/60 Hz)※1 kW 1.3/1.5
Heating Capacity (50/60 Hz)※1 kW 0.53/0.53 0.38/0.42
Ambient Temp. Range ℃ 5 - 45
Operating Temp. Range
(Liquid Temp.)		 ℃ 5 - 40
Operating Water Pressure MPa 0.05 - 0.3
Control Precision※4 ℃ ±0.1
Min. Operating Circulation Rate
(50/60 Hz)		 L/min 10 (Head: 30 m)
Power
Specifications		 Power Source※2 V(Hz) Single-phase 100±10%(50/60) Single-phase 200 - 230±10% (50/60)
Power Consumption (50/60 Hz)※1 kW 0.8/0.7 0.9/1.0 0.6/0.6
Electric Current (50/60 Hz)※1 A 7.9/7.3 3.8/4.7 3.2/3.0
Power Capacity※3 kVA 1.2 1.5 1.3
Breaker Capacity※5 A 15 10
Operation Control Method Electronic expansion valve capacity control
Equipment
Details		 Compressor kW Hermetically sealed rotary type
0.55 0.6
Condenser Corrugated fin and tube parallel flow type Plate type heat exchanger
Evaporator Construction Plate type heat exchanger
Material SUS316 (Brazing: Cu)
Discharge Pump Construction Cascade type
Output kW 0.25 (Inverter driven)
Water Tank Capacity L Approx. 17
Refrigerant R410A
Charge Amount kg 0.36 0.45
External Dimensions (HxDxW) mm 615×500×375
Product Mass (Dry weight) kg 42 44
Export Standards CE and UL (60 Hz only) - ○ -
Operating Noise Level (50/60 Hz)※6 dB 59/62 59/60 54/55
Air Cooled
602J-MV 752J-MV 753J-MV
Performance
Specifications 		Cooling Capacity (50/60 Hz)※1 kW 1.8/2.0 2.2/2.5
Heating Capacity (50/60 Hz)※1 kW 0.6/0.6
Ambient Temp. Range ℃ 5 - 45
Operating Temp. Range (Liquid temp) ℃ 5 - 40
Operating Water Pressure MPa 0.05 - 0.3
Control Precision※4 ℃ ±0.1
Min. Operating Circulation Rate L/min 10 (Head: 30 m)
Performance
Specifications		 Power Source※2 V(Hz) Single-phase 200 - 230±10% (50/60) Three-phase 200±10% (50/60) / 220±10% (60)
Power Consumption (50/60 Hz)※1 kW 1.0/1.1 1.1/1.2 0.9/1.0, 1.0
Electric Current (50/60 Hz)※1 A 4.9/5.2 5.2/5.4 3.6/3.4, 3.4
Power Capacity※3 kVA 2.0
Breaker Capacity※5 A 15 10
Operation Control Method Electronic expansion valve capacity control
Equipment
Details		 Compressor kW Hermetically sealed rotary type
0.75 0.85
Condenser Corrugated fin and tube parallel flow type
Evaporator Construction Plate type heat exchanger
Material SUS316 (Brazing: Cu)
Discharge Pump Construction Cascade type
Output kW 0.25 (Inverter driven)
Water Tank Capacity L Approx. 17
Refrigerant R410A
Charge Amount kg 0.37
External Dimensions (HxDxW) mm 615×500×375
Product Mass (Dry mass) kg 45 46
Export Standards CE and UL (60 Hz only) ○ ○
(UL in progess)		 -
Operating Noise Level (50/60 Hz)※6 dB 61/62 62/63
Air Cooled
1502J-MV 1503J-MV
Performance
Specifications		 Cooling Capacity (50/60 Hz)※1 kW 4.9/5.3
Heating Capacity (50/60 Hz)※1 kW 1.1/1.1
Ambient Temp. Range ℃ 5 - 45
Operating Temp. Range (Liquid temp) ℃ 5 - 40
Operating Water Pressure MPa 0.1 - 0.6
Control Precision※4 ℃ ±0.1
Min. Operating Circulation Rate
(50/60 Hz)		 L/min 18 (Head: 60 m)
Electrical
Specifications		 Power Specifications※2 V(Hz) Single-phase 200 - 230 -5%+10% (50/60) Three-phase 200±10% (50/60) / 220±10% (60)
Power Consumption (50/60 Hz)※1 kW 2.0/2.5 1.8/2.2, 2.2
Electric Current (50/60 Hz)※1 A 9.5/11.3 6.6/8.2, 8.2
Power Capacity※3 kVA 4.2
Breaker Capacity※5 A 30 15
Operation Control Method Electronic expansion valve capacity control
Equipment
Details		 Compressor kW Hermetically sealed rotary type
1.2 1.8
Condenser Corrugated fin and tube parallel flow type
Evaporator Construction Plate type heat exchanger
Material SUS316 (Brazing: Cu)
Discharge Pump Construction Cascade type
Output kW 0.4 (Inverter driven)
Water Tank Capacity L Approx. 17
Refrigerant R410A
Charge Amount kg 0.65 0.59
External Dimensions (HxDxW) mm 933×590×375
Produvt Mass (Dry mass) kg 72 68
Export Standards CE and UL (60 Hz only) ○ -
Operating Noise Level (50/60 Hz)※6 dB 64/65 65/66
  1. Under the following conditions: Chilled water temp: 20 ℃, Ambient temp: 25 ℃, Max. discharge pump circulating load. Cooling capacity is at least 95% of listed figures. Heating capacity will change according to operating conditions.
  2. Source voltage phase unbalance should be less than ±3%.
  3. The figure noted is when the product is operating at its maximum rated capacity.
  4. When the current load is continuously within ±10%, and the ambient temperature is stable. However does not include starting times or when the heat-load exceeds the chiller capacity.
  5. Comes standard with a built-in overload protection circuit breaker (NFB).
  6. Operating noise levels are from a position of 1 m in front of the product and at a height of 1m.
  1. Do not use aluminum parts that will be wetted with the chilled water. Electronic corrosion of aluminum can cause clogging in the heat exchanger.
  2. Heat output from the unit (in kW) is approx. 1.3 times that of the cooling capacity.
  3. Depending on the operating environment, condensation may form on piping inside the product, and temporary leakage of water from the pump mechanical seals may also occur, therefore a drain pan should be installed if required.