Cooling Water Circulator 3.9L Overview
The Cooling Water Circulator 3.9L (Yamato Scientific CF303Y) is a refrigerated recirculating water circulator built for closed-loop cooling across a temperature setting range of -20°C to 30°C. Sold by LabSupplies.com, authorized dealer, this 3.9 L unit delivers roughly 450 W of cooling capacity at 10°C with ±1.0°C control accuracy at or above freezing.
A stainless steel water bath pairs with a stainless steel 304 cooling coil for durable, corrosion-resistant fluid handling. Temperature is read by a Pt100Ω sensor and managed through refrigeration ON-OFF control with a white LED digital display at 1°C resolution. The R452A air-cooled system reaches a maximum flow rate near 10 L/min and a maximum head of about 5.7 m.
CF303Y runs on single-phase AC115V at 6.8 A, while the CF313Y variant covers 220V installations. Its slim 205 × 396 × 535 mm footprint installs on or below a laboratory bench, and the unit weighs roughly 30 kg. Country of origin is China. Each circulator ships with a 1 m condensation drain hose, two hose clamps, and two hose nozzles.
Key Features
- Refrigerated cooling range: setting range of -20°C to 30°C with no heating function, delivering ~450 W at 10°C and ~330 W at -10°C.
- Stainless steel fluid path: stainless steel water bath and stainless steel 304 cooling coil resist corrosion in continuous recirculation.
- Digital control: Pt100Ω sensor with white LED display, key entry, and 1°C resolution under refrigeration ON-OFF control.
- One-touch connection: rear top-panel swivel L-type connector accepts a 10 mm OD hard tube or 9 mm ID flexible hose on a single line.
- R452A air-cooled system: 450 W air-cooled refrigeration with up to ~10 L/min flow and ~5.7 m maximum head.
- Layered safety devices: overcurrent ELCB, sensor-failure detection, upper/lower temperature limit alerts, refrigerator high-pressure cutoff, fan and pump protection, and a refrigerator-protection delay timer.
How to Choose the Right Circulator / Chiller
Selecting a recirculating chiller comes down to matching cooling output, temperature span, and connection format to your instrument load. Review these axes .
- Temperature range: confirm the application stays within -20°C to 30°C; this unit cools only and offers no heating function.
- Cooling capacity: match heat load to the ~450 W available at 10°C and ~330 W at -10°C so the chiller holds setpoint under continuous duty.
- Bath capacity and flow: a 3.9 L bath with ~10 L/min flow and ~5.7 m head suits condenser cooling on rotary evaporators and similar loops.
- Voltage and power: choose CF303Y for single-phase AC115V, 6.8 A circuits or CF313Y for 220V sites to fit existing infrastructure.
- Footprint: verify the slim 205 × 396 × 535 mm body and ~30 kg weight fit on or below your bench.
- Safety requirements: evaluate the built-in ELCB, high-pressure cutoff, sensor-failure detection, and limit alerts against your lab's protection standards.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 3.9 L |
| Voltage | 115V |
| Type | Refrigerated recirculating water circulator (cooling) |
| Cooling System | Closed circulation |
| Circulating Medium | Tap water; anti-freeze solution (below 10°C) |
| Temperature Setting Range | -20°C to 30°C (no heating function) |
| Temperature Control Accuracy | ±1.0°C (≥0°C); ±1.5°C (<0°C) |
| Temperature Fluctuation | 2.0°C (≥0°C); 3.0°C (<0°C) |
| Cooling Capacity | ~450 W at 10°C; ~330 W at -10°C |
| Max Flow Rate | ~10 L/min |
| Max Head (Lift) | ~5.7 m |
| Operating Ambient Temperature | 5°C to 35°C |
| Temperature Control System | Refrigeration ON-OFF |
| Temperature Sensor | Pt100Ω |
| Controller | White LED digital display, key entry, 1°C resolution |
| Refrigeration System | Air cooling / 450 W |
| Refrigerant | R452A |
| Cooling Coil | Stainless steel 304 |
| Circulation Connection | Rear top panel, single line; one-touch swivel L-type connector (10 mm OD hard tube or 9 mm ID flexible hose) |
| Water Bath Material | Stainless steel |
| Water Bath Capacity | ~3.9 L (liquid volume 3.5 L) |
| Safety Devices | Overcurrent ELCB, temperature sensor failure detection, temperature upper/lower limit alert and error, refrigerator high-pressure cutoff switch, fan motor protection, circulation pump protection, refrigerator-protection delay timer |
| External Dimensions (W×D×H) | 205 × 396 × 535 mm (225 × 434 × 564 mm incl. protrusions) |
| Weight | ~30 kg |
| Compact Installation | Slim footprint installs on or below a laboratory bench |
| Recommended Combination | Rotary evaporator condenser cooling |
| Country of Origin | China |
| Included Accessories | Condensation drain hose (1 m), hose clamps (2), hose nozzles (2) |
| Power Source | Single-phase AC115V, 6.8 A (with plug) |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| CF-303Y | 115V | EA |
| CF-313Y | 220V | EA |
Documentation
More in This Series
Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every Cooling Water Circulator 3.9L ships as a genuine unit backed by the manufacturer warranty. Order directly online and our lab-equipment specialists are ready for any spec question before you commit.
- Authorized Yamato Scientific dealer: genuine units with full manufacturer warranty coverage.
- In stock: ready to ship from USA inventory.
- Voltage options stocked: CF303Y (115V) and CF313Y (220V) both available.
- Dedicated lab-equipment specialists: direct support for sizing, connection, and compatibility questions.
Frequently Asked Questions
What temperature range does the CF303Y cover?
The CF303Y sets between -20°C and 30°C with no heating function. Control accuracy is ±1.0°C at or above 0°C and ±1.5°C below 0°C, with cooling capacity around 450 W at 10°C and 330 W at -10°C.
What is the bath capacity and how large is the unit?
The water bath holds about 3.9 L with a 3.5 L liquid volume. External dimensions are 205 × 396 × 535 mm (225 × 434 × 564 mm including protrusions), and the unit weighs roughly 30 kg for on-bench or under-bench installation.
What is the difference between CF303Y and CF313Y?
Voltage is the only difference. CF303Y runs on single-phase AC115V at 6.8 A, while CF313Y is the 220V version. Both share the same 3.9 L capacity, -20°C to 30°C range, and cooling performance.
What materials contact the circulating fluid?
The water bath is stainless steel and the cooling coil is stainless steel 304. The circulating medium is tap water, or an anti-freeze solution when operating below 10°C.
How does the chiller connect to my instrument?
A single circulation line exits the rear top panel through a one-touch swivel L-type connector. It accepts a 10 mm OD hard tube or a 9 mm ID flexible hose, and the unit is recommended for rotary evaporator condenser cooling.
What safety features are built into the circulator?
Protection includes an overcurrent ELCB, temperature sensor failure detection, upper and lower temperature limit alerts and errors, a refrigerator high-pressure cutoff switch, fan motor protection, circulation pump protection, and a refrigerator-protection delay timer.