×

Middle Grade Model RKS JM series

High precision temperature control + inverter driven high pressure pump + high temperature environment compatible

J-M Series

Mid - Grade Model
Cooling capacity (50/60 Hz) : 1.3/1.5 kW(RKS401/402J-MV)
2.2/2.5 kW(RKS752/753J-MV)
4.9/5.3 kW(RKS1502/1503J-MV)
  • Operating ambient temperature range: 5 to 45 ° C
  • Usable solution temperature range: 5 to 40 ° C
  • Temperature control accuracy: ± 0.1 ° C

The electronic expansion valve control achieves ±0.1 °C 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 operatable Ambient Temprature Range of 5 - 45 °C working Liquid Temprature Range of 5 - 40 °C Supports Many working Enviroinments

J-Series

Economy Model

Easy to Use + Simple + Affordable

  • Cooling capacity (50/60 Hz) : 2.0/2.5 kW (RKS753J-V) 4.9/5.3 kW (RKS1503J-V)
  • Operable Ambient Temprature: 10 - 40 °C
  • Working Liquid Temprature : 15 - 35 °C
  • Temprature Cooling Accuracy : ± 2.0 °C

Compressor ON/OFF control offers temprature control of ± 2.0 °C for superior versatility.

High Head Pump Built In!

Made Even Easier to Use!

Simple and Reassuring Design Common on All RKS J(M) Series Models

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.

Output signal

  • Operation signal
  • Alarm signal
  • Remote signal

Operation mode

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

Easy Filter Cleaning

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.

Large Capacity Tank with Wide Water
Supply Port

@ 100 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.

Specification table

Model RKS-JM Series RKS-J Series
401J-MV 402J-MV 752J-MV 753J-MV 1502J-MV 1503J-MV 753J-V 1503J-V
Performance Specifications
Cooling Capacity (50/60 Hz) (1) kW 1.3 / 1.5 2.2 / 2.5 4.9 / 5.3 2.2 / 2.5 4.9 / 5.3
Heating Capacity (1) kW 0.53 / 0.53 0.6 / 0.6 1.1 / 1.1 - -
Ambient Temp. Range °C 5 - 45 10 - 40
Operating Temp. Range (Liquid Temp.) °C 5 - 40 15 - 35
Operating Water Pressure MPa 0.05 - 0.3 0.1 - 0.6 0.05 - 0.2 / 0.3 (50/60 Hz) 0.1 - 0.5
Control Precision (4) °C ±0.1 ±2.0
Min. Operating Circulation Rate (50/60 Hz) L/min 10 (Head: 30 m) 18 (Head: 60 m) 10 (Head: 20/30 m) 12/21 (Head: 50 m)
Power Specifications
Power Source (2) V (Hz) Single-phase 100 (50/60) Single-phase 200-230 (50/60) Three phase 200 (50/60) * 220 (60) Single-phase 200 * 230 (50/60) Three-phase 200 (50/60) * 220 (60) Three-phase 200 (50/60) 220 (60)
Power Consumption (50/60 Hz) (1) kW 0.8 / 0.7 0.9 / 1.0 1.1 / 1.2 0.9 / 1.0 2.0 / 2.5 1.8 / 2.2 0.9 / 1.1 1.8 / 2.2
Electric Current (50/60 Hz) (1) A 7.9 / 7.3 3.8 / 4.7 5.2 / 5.4 3.6 / 3.4 7.6 / 8.5 6.6 / 8.2 4.1 / 4.1 6.8 / 7.4
Power Capacity (3) kVA 1.2 1.5 2.0 2.0 4.2 4.2 2.0 4.2
Breaker Capacity (5) A 15 10 15 10 30 15 10 15
Operation Control Method Electronic expansion valve capacity control Compressor ON/OFF Control
Equipment details
Compressor kW Hermetically sealed rotatry type
0.55 0.6 0.75 0.85 1.2 1.8 0.85 1.8
Condenser Corrugated fin and tube parallel flow type
Evaporator Construction Plate type heat exchanger
Materials SUS316 (Brazing Cu)
Discharge Pump Construction Cascade type
Output kW 0.25 (Inverter driven) 0.4 (Inverter driven) 0.25 0.4
Water Tank Capacity L Approx. 17
Refrigerant L R410A
External dimensions (H × D × W) mm 615×500×375 933×590×375 615×500×375 933×590×375
Product Mass (Dry Weight) kg 42 45 46 72 68 45 67
Operating Noise Level dB 59 / 62 59 / 60 61 / 62 62 / 63 64 / 65 65 / 66 61 / 63 63 / 66
  • 1. Cold water temperature 20 ° C, ambient temperature 25 ° C, pressure delivery pump circulation maximum time. The cooling capacity is 95% or more of the display capacity.
  • 2. The heating capacity changes depending on the operating condition.
  • 3. The phase unbalance of power supply voltage should be within ± 3%.
  • 4. Maximum operating current within the operating range.
  • 5. When the current load within ± 10% continues and ambient temperature is stable.
  • 6. However, except at startup and when a thermal load exceeding the cooling capacity is input.
  • 7. Built-in overload protection breaker (NFB) as standard.
  • 8. The driving sound is 1 m front and 1 m high.
  • 9. Clean water and 30 to 40% industrial ethylene glycol solution are recommended for liquid (cold water) used in this machine.
  • 10. However, when using an industrial ethylene glycol aqueous solution of 30 to 40%, since the cooling capacity drops by about 10% Please be careful.
  • 11. Also, in the case of pure water, please set the electric conductivity to 1 *S / cm or more.
  • 12. Apparatus exhaust heat (kW) is about 1.3 times the cooling capacity.
  • 13. Depending on the usage environment, condensation may form on the internal piping of the main unit or the mechanical seal of the pump may deteriorate in a short period of time, so please install a drain pan of the accessory as necessary.

Dimensions

Chilled Water Flow Chart

Operating temperature limit

Discharge Pump Characteristic Curves *1: Refer to 60 Hz curve. *2: Refer to 50/60 Hz curve.

Discharge Pump Characteristic Curves (For factory options) *1: Refer to 60 Hz curve. *2: Refer to 50/60 Hz curve.