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

RKS401J-MV / RKS402J-MV(W) /
RKS752J-MV / RKS753J-MV /
RKS1502J-MV / RKS1503J-MV

Cooling Capacity
(50/60Hz)
1.3/1.5 to 4.9/5.3 kW
Operable
Ambient
Temperature
Range
5 to 45 ℃
Operable Liquid
Temperature
Range
5 to 40 ℃
Temperature
Control Precision
±0.1℃
  • The electronic expansion valve control achieves ±0.1 ℃ high precision temperature control that translates to increased equipment production precision. Offers improved 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 ranging operable ambient temperature range of 5 to 45 ℃ and operable liquid temperature range of 5 to 40 ℃. Works just about anywhere!
  • Three models in our CE marking conformity lineup.
    RKS402J-MV / RKS752J-MV / RKS1502J-MV
    • Model numbers ending with -00000 and -01000 are CE and UL certified.
    • Models outside the above model numbers have CE conformity only (Built to order).
RKS752/753J-MV・RKS1502/1503J-MV
(Left) RKS752/753J-MV
(Right) RKS1502/1503J-MV

Simple and Safe Design and Controller

Easy operation with just the press of a button. Error code display gives important information about the alarm. Allows for quick recovery after an issue.

Safe Design and Controller

Output Signals

  • Operation Signal
  • Alarm Signal
  • Remote Signal

Operating Mode

  • Freeze-Prevention Mode
  • Warm Up Mode
  • Discharge Pump-Only-Operation
  • Automatic recovery after power outage etc.

Large diameter water supply port for easy tank cleaning.
Easy-to-check LED-lit water level gauge.

大口径給水口＆水位レベラー

Φ100 mm large water supply port makes it easy to clean the inside of the tank!
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 makes it easy to check the water level!

Large Diameter Water Supply Port Makes cleaning the inside of the tank easy!
Large Diameter Water Supply Port
Makes cleaning the inside of the tank easy!
Easy-to-Check LED-Lit Water Level Gauge
Easy-to-Check LED-Lit
Water Level Gauge

Comes standard with a filter to help prevent clogging!

目詰まり防止フィルタ

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

Specifications (Standard Products)

Air Cooled Water Cooled
RKS401J-MV RKS402J-MV RKS402J-MVW
Performance Cooling Capacity (50/60 Hz)※1 kW 1.3/1.5
Heating Capacity (50/60 Hz)※1 kW 0.53/0.53 (0.53/0.53)
Operable Ambient Temperature Range ℃ 5 to 45
Operating Temperature Range (Liquid temp) ℃ 5 to 40
Operable Water Pressure MPa 0.05 to 0.3
Control Precision※4 ℃ ±0.1
Minimum Operable Circulation Rate L/min 10 (Head: 30 m)
Electrical Specifications Power Source※2 V(Hz) Single-phase 100±10%(50/60) Single-phase 200 to 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 Specifications Refrigeration Compressor Construction Hermetically sealed rotary type
Output kW 0.55 0.6
Condenser Corrugated fin and tube parallel flow 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 R-410A
External Dimensions (HxDxW) mm 615×500×375
Mass (Dry mass) kg 42 44
Operating Noise Level (50/60 Hz)※6 dB 59/62 59/60 53/55
CE and UL Export Standards (60 Hz only) - ○ -
Air Cooled
RKS752J-MV RKS753J-MV
Performance Cooling Capacity (50/60 Hz)※1 kW 2.2/2.5
Heating Capacity (50/60 Hz)※1 kW 0.6/0.6
Operable Ambient Temperature Range ℃ 5 to 45
Operating Temperature Range (Liquid temp) ℃ 5 to 40
Operable Water Pressure MPa 0.05 to 0.3
Control Precision※4 ℃ ±0.1
Minimum Operable Circulation Rate L/min 10 (Head: 30 m)
Electrical Specifications Power Source※2 V(Hz) Single-phase 200 to 230±10% (50/60) Three-phase 200±10% (50/60) / 220±10% (60)
Power Consumption (50/60 Hz)※1 kW 1.1/1.2 0.9/1.0, 1.0
Electric Current (50/60 Hz)※1 A 5.2/5.4 3.6/3.4, 3.4
Power Capacity※3 kVA 2.0 2.0
Breaker Capacity※5 A 15 10
Operation Control Method Electronic expansion valve capacity control
Equipment Specifications Refrigeration Compressor Construction Hermetically sealed rotary type
Output kW 0.75 0.85
Condenser Corrugated fin and tube parallel flow
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 R-410A
External Dimensions (HxDxW) mm 615×500×375
Mass (Dry mass) kg 45 46
Operating Noise Level (50/60 Hz)※6 dB 61/62 62/63
CE and UL Export Standards (60 Hz only) ○ -
Air Cooled
RKS1502J-MV RKS1503J-MV
Performance Cooling Capacity (50/60 Hz)※1 kW 4.9/5.3
Heating Capacity (50/60 Hz)※1 kW 1.1/1.1
Operable Ambient Temperature Range ℃ 5 to 45
Operating Temperature Range (Liquid temp) ℃ 5 to 40
Operable Water Pressure MPa 0.1 to 0.6
Control Precision※4 ℃ ±0.1
Minimum Operable Circulation Rate L/min 18 (Head: 60 m)
Electrical Specifications Power Source※2 V(Hz) Single-phase 200 to 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 4.2
Breaker Capacity※5 A 30 15
Operation Control Method Electronic expansion valve capacity control
Equipment Specifications Refrigeration Compressor Construction Hermetically sealed rotary type
Output kW 1.2 1.8
Condenser Corrugated fin and tube parallel flow
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 R-410A
External Dimensions (HxDxW) mm 933×590×375
Mass (Dry mass) kg 72 68
Operating Noise Level (50/60 Hz)※6 dB 64/65 65/66
CE and UL Export Standards (60 Hz only) ○ -
  1. For air cooled models, chilled water temp: 20 ℃, ambient temp: 25 ℃, and the discharge pump operating is at maximum circulation. For water cooled models, chilled water temp: 20 ℃ , cooling water temperature: 25 ℃, and the discharge pump is operating at maximum circulation. Cooling capacity is at least 95% of the noted value. Heating capacity will change according to operating conditions.
  2. The source voltage phase unbalance should be within ±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 1 m.
  1. The recommended liquid (chilled water) for use in this product is clean water or a 30% to 40% solution of industrial-use ethylene glycol. Use Aurora Brine or Nai-Brine Z-1 industrial-use ethylene glycol. Alternatively, if conditioned water is used, then it should have an electrical conductivity of at least 1 µS/cm. Note that there will be a 10% drop in cooling capacity if using a low-concentration 30% to 40% ethylene glycol solution.
  2. Heat output of air-cooled models (in kW) is approx. 1.3 times that of their 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 (sold separately) should be installed if required.