Remove heat from a suitable external circuit with the IKA RC 2 GREEN control. This compact recirculating chiller combines a speed-controlled compressor, adjustable PEEK pressure/suction pump and removable WiCo controller. The PT 100.30 external temperature sensor is included.

Exact US order 0025007404 is the 115 V, 50/60 Hz version. Its working range is −30°C to room temperature, with 800 W cooling at +20°C and less capacity at colder targets. It is a cooling-only instrument, not a heating/cooling circulator.

Specify the complete loop. Connecting hoses, coolant, any additional fittings and the external application equipment are separate selections. Supplied hose olives are not a complete connection kit or proof that every reactor, condenser or shaker setup is ready to run.

You need to remove heat

Choose a recirculating chiller when the job is cooling a compatible external circuit. If the method also requires active heating, select a separately specified heating/cooling system instead.

You can size at the actual target

Use the cooling-capacity reference at your target temperature and account for process heat, ambient gain, tubing and pull-down requirements. The lowest setpoint does not carry the highest cooling power.

You have a defined hydraulic circuit

Match pressure, flow resistance, materials, hose sizes and fluid limits across the complete loop. An adjustable pump does not make every external device compatible.

You want local controls and process feedback

WiCo supports local settings, timer/counter functions and programs. The included external sensor can support an appropriately configured external-control method; its presence does not validate that method automatically.

Chiller, WiCo, external sensor and listed connection hardware

• RC 2 GREEN control with WiCo wireless controller.
• Two DN 8 hose olives and two DN 12 hose olives.
• USB-A to Micro-B cable, 2 m.
• PT 100.30 temperature sensor.
• WiCo charger.

The operating manual also identifies power cables, WH 10 WiCo holder, OS 1.0 power supply, an additional USB lead, connector caps and documentation. Where a specific regional packing detail matters, confirm the current order configuration rather than treating an interface as proof that every cable or fitting is supplied.

Separate selections: connecting hoses and clamps, suitable coolant, any additional adapters or pressure safeguards, the external process device and an optional software license. DN 10 olives are a manufacturer-listed option, not an extra pair included with the supplied DN 8/DN 12 hardware.

Size the duty, not just the minimum setpoint

The current reference values are 800 W at +20°C, 700 W at +10°C, 500 W at 0°C, 400 W at −10°C, 200 W at −20°C and 90 W at −30°C. A heat-generating process at a low target may need more cooling capacity even when its setpoint lies within the chiller’s stated range.

Include external heat input, ambient conditions, tubing losses and required time to target. The 1.4–4.0 L bath-fill range is internal thermofluid volume, not a universal sample-capacity rating.

IKA describes up to 2.5 L available for the external circuit without refilling. Treat that as a fluid-management reference, not proof that any 2.5 L process will reach the target or that a larger sample is automatically unsuitable.

Maximum flow and maximum pressure are different limits

The speed-controlled PEEK pressure/suction pump adjusts from 2,000 to 4,000 rpm. Its 21 L/min maximum flow is at zero back pressure; the 0.5 bar maximum pressure is at zero discharge flow. The suction reference is 0.25 bar at zero flow. Do not combine those maxima into one performance promise.

Connections are M16×1. The supplied DN 8 and DN 12 hose olives need matching, temperature-rated hoses and secure clamps. Select the operating point from the actual circuit resistance and the manufacturer’s pump curve, while respecting the connected device’s pressure limit.

For a 10 mm-ID connection route, the manufacturer lists DN 10 hose olives / 0020004568 as an optional two-piece adapter set. It is not included here and is not, by itself, a complete KS 4000 ic installation. Review both ends of the loop, hose material, clamps, pressure protection and thermal duty.

Control the cooling method, not just the display number

WiCo provides local operation, timer/counter functions and ten temperature programs with up to ten steps each. Programs remain limited by this cooling-only system’s available duty; selecting a warmer setpoint does not add an active heater.

The PT 100.30 connects to the external PT 100/LEMO interface for an appropriately configured external-control method. It is not the KS shaker’s PT 1000.60 sensor, and those sensor functions must not be interchanged by name alone.

The manual lists ±0.15 K internal temperature stability under DIN reference conditions and ±0.5 K internal/external absolute measurement accuracy, adjustable by calibration. Display resolution of 0.01 K is not 0.01 K accuracy.

Wireless operation is building-dependent, up to 15 m per the manual. Review communication timeout, safe-speed and safe-temperature settings; loss of the WiCo link or battery is not a universal automatic shutdown. USB and RS-232 support separately configured software workflows; no software license or validated electronic-recordkeeping compliance is implied.

Keep the shaker’s limits even when the chiller can go colder

The current KS 4000 ic manual names RC 2 GREEN basic/control as examples of external cooling units. That manufacturer relationship is useful, but it is not a guarantee that every load, hose arrangement or target temperature is already validated.

Related workflow: KS 4000 ic control with its separately specified cooling installation. The shaker requires coolant inlet above 3°C, a maximum 1 bar circuit pressure, its 10 mm-ID connection route, the permitted water/antifreeze coolant and condensate drainage under its manual.

Do not use this chiller’s −30°C lower limit as permission to send sub-zero coolant into the shaker. The shaker manual recommends pressure protection; this listing does not waive that recommendation based on a pump headline. Appropriate adapters, hoses, clamps, flow and heat-load sizing still need review.

The heating-only KS 4000 i has no ic cooling circuit. Adding a chiller does not convert that different model into an ic system.

Prepare the loop before commissioning

• Define target temperature, process heat load and the external equipment’s limits.
• Select compatible fluid, hoses, adapters and safeguards for the coldest and warmest conditions.
• Use the manual’s filling, venting, leak-check and level-control procedures; never run without sufficient fluid.
• Set suitable control, program and communication-loss behavior, then verify the actual method under load.

The fluid’s maximum stated viscosity is 50 mm²/s at the lowest operating temperature. Ordinary water is not a suitable assumption for operation at −30°C. Connected equipment may impose stricter fluid and temperature requirements, as KS 4000 ic does.

The manual requires at least a 9 m³ room, adequate ventilation, 20 cm free space at front and rear, and at least one hour settling after positioning before operation. R290 is flammable; it is not an explosion-proof instrument. Keep the filter and ventilation paths accessible.