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

RKS752/753J-MV RKS1502/1503J-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
  • 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).


Made Even Easier to Use! Simple and Safe Design Points Shared with all RKS J(M) Series Models

❶Simple and Reliably Designed Controller
❷Large diameter water supply port for easy tank cleaning.
❸Easy-to-check LED-lit water level gauge.
❹Comes standard with a filter to help prevent clogging!

Simple and Reliably Designed 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.

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.

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!
Easy-to-Check LED-Lit
Water Level Gauge
Comes standard with a filter to help prevent clogging!

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.

Optional Equipment

Factory Option Designation Description and Examples

*1 400 class models only.
*2 J-MV Series models only.
*3 750 and 1500 class models only.
*4 RKS402J-MV and RKS75□ models only.

Specifications (Standard Products)

*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 equipment is operating at the highest capacity of its normal operating range.
*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.
Note 1 : Liquid (chilled water) that can be used are either clean water and a 30 to 40 % ethylene glycol solution. Note that there will be a drop in cooling capacity of 10 % if using a 30 to 40 % ethylene glycol solution. Alternatively, if deionized water is to be used, it should have an electrical conductivity of at least 1μs/cm.
Note 2: Heat output from the unit (in kW) is approx. 1.3 times that of the cooling capacity.
Note 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.

External Diagram

Air Cooled


Cooling Capacity Curve

Operable Temperature Range(Air Cooled Model)

Cooling Water Flow Rate(Water cooled condenser)

Discharge Pump Characteristic Curves (Standard Specifications)

Discharge Pump Characteristic Curves (Optional Specifications)

Documentation is available for download.

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We also offer a demo unit.

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