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USA Lab
Closed Loop Recirculating Chiller - ETL Certified
in Chillers
$4,500.00 - $8,999.00
In stockPrice varies by Size.
Seven closed-loop recirculating chillers on 2–5 HP Invotech scroll compressors, reaching −20, −30 or −40 °C at 30–53 L/min. ETL to UL and CSA.
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Description
The CLC Series is a line of closed-loop recirculating chillers for laboratory and process cooling. Rather than cooling a bath passively and relying on an immersed coil, each unit transfers heat through an inline plate heat exchanger placed directly in the fluid loop, which moves thermal load out of the process fluid faster and makes the chiller easier to integrate into an existing circuit. Mechanical cooling is provided by Invotech scroll compressors of 2 HP to 5 HP depending on model, running on R-448a refrigerant.
Seven models are available, covering minimum temperatures of −20 °C, −30 °C and −40 °C, with reservoirs of 9 litres or 19 litres, flow rates of 30 to 53 L/min and pump lift of 4 m to 28 m. All seven use 1/2" FNPT port connections. The series is ETL certified to UL and CSA standards.
Typical applications listed by the manufacturer are rotary evaporators, jacketed reactors, short path distillation systems, vacuum systems, condensers and analytical instruments.
Model lineup
| Model | Lowest temperature | Reservoir | Pump flow | Compressor | Pump lift |
|---|---|---|---|---|---|
| CLC-10/40 | −40 °C | 9 L | 30 L/min | 2 HP | 4 m / 12 ft |
| CLC-20/20 | −20 °C | 9 L | 30 L/min | 2 HP | 4 m / 12 ft |
| CLC-20/40 | −40 °C | 9 L | 30 L/min | 3 HP | 4 m / 12 ft |
| CLC-30/30 | −30 °C | 9 L | 53 L/min | 3 HP | 6 m / 20 ft |
| CLC-30/40 | −40 °C | 9 L | 53 L/min | 4 HP | 6 m / 20 ft |
| CLC-50/30 | −30 °C | 19 L | 42 L/min | 5 HP | 28 m / 92 ft |
| CLC-50/40 | −40 °C | 19 L | 42 L/min | 5 HP | 28 m / 92 ft |
The first number in the model designation is the series index rather than the reservoir volume — the data sheet lists a 9 litre reservoir on the CLC-10, CLC-20 and CLC-30 models and a 19 litre reservoir on the CLC-50 models.
Installation and operation notes
- Power compatibility: not compatible with a 208 V supply. The acceptable supply range is 219 V to 253 V at 60 Hz, through an L6-30P plug.
- Duty cycle: not intended for 24-hour operation. Maximum continuous run time is 16 hours.
- Environmental conditions: indoor use only, altitude up to 2,000 m, ambient 5 °C to 25 °C, maximum 80% relative humidity up to 31 °C decreasing linearly to 50% at 40 °C.
- Bypass: an external bypass loop may be required for low-flow or high-restriction applications.
- Dimensions: 26.8" × 23.6" × 37.8" at 256 lb for the CLC-10, CLC-20 and CLC-30 models; 31" × 26.8" × 42" at 330 lb for the CLC-50 models.
Frequently asked questions
How do the seven models differ?+
By minimum temperature, reservoir, flow and compressor size. CLC-10/40: −40 °C, 9 L, 30 L/min, 2 HP. CLC-20/20: −20 °C, 9 L, 30 L/min, 2 HP. CLC-20/40: −40 °C, 9 L, 30 L/min, 3 HP. CLC-30/30: −30 °C, 9 L, 53 L/min, 3 HP. CLC-30/40: −40 °C, 9 L, 53 L/min, 4 HP. CLC-50/30: −30 °C, 19 L, 42 L/min, 5 HP. CLC-50/40: −40 °C, 19 L, 42 L/min, 5 HP. Note that the first number in the model name is the series index, not the reservoir volume — the data sheet lists 9 L reservoirs on CLC-10 through CLC-30 and 19 L on CLC-50.
What electrical supply is required? Will it run on 208 V?+
No. The data sheet states explicitly that the CLC Series is not compatible with 208 V power input, and gives an acceptable supply range of 219 V to 253 V at 60 Hz. The plug is L6-30P. This is the single most common specification error on this product, so verify the outlet voltage at the installation point before ordering — a 208 V three-phase panel is very common in North American labs.
Can it be run continuously, 24 hours a day?+
No. The data sheet states that the CLC Series is not intended for 24-hour operation and specifies a maximum continuous run time of 16 hours. If your process needs uninterrupted cooling around the clock, this is the wrong series and a continuous-duty chiller should be specified instead.
Why an inline plate heat exchanger rather than a bath?+
The CLC Series cools the process fluid through a plate-type exchanger in line with the loop, instead of immersing a cooling coil in a passive bath. The manufacturer's stated benefit is faster thermal transfer with less loss, and easier integration into an existing fluid loop. The practical difference for a buyer is that the reservoir sizes are small (9 L or 19 L) relative to the cooling capacity, because the reservoir is not doing the heat exchange.
What are the environmental and installation limits?+
Indoor use only, altitude up to 2,000 m, ambient 5 °C to 25 °C, and maximum 80% relative humidity up to 31 °C decreasing linearly to 50% at 40 °C. The data sheet also notes that an external bypass loop may be required for low-flow or high-restriction applications. Units are 26.8 × 23.6 × 37.8 in at 256 lb (CLC-10 to CLC-30) or 31 × 26.8 × 42 in at 330 lb (CLC-50).
What can it be connected to?+
The data sheet lists rotary evaporators, jacketed reactors, short path distillation systems, vacuum systems, condensers and analytical instruments. Ports are 1/2 in FNPT on all seven models, and pump lift ranges from 4 m (12 ft) on the CLC-10 and CLC-20 to 28 m (92 ft) on the CLC-50 models — the lift figure is what determines whether the chiller can serve equipment on a different floor or at the far end of a long run.
Related products
HUBER CS Chillers
Eight air-cooled recirculating chillers from the 3.5 kW CS 25 to the 28 kW CS 200. Standard models run −20 to +15 °C; -H variants heat to +85 °C.
G&D Multi Stage Chillers
Four multi-compressor process chillers on two independent circuits, 82,200 to 192,000 Btu/h at 30 °F leaving fluid and 90 °F ambient. R448A, ETL (UL508).
