Q1: Can I use water as the cooling fluid in this chiller?
A: No, absolutely not. For temperatures below 0°C, you must use a fluid with a lower freezing point, such as ethanol, silicone oil, or a glycol-water mixture. Using water will cause irreversible damage to the unit.
Q2: What is the difference between the "Bath" and "Circulator" functions?
A: In "Bath" mode, you place your samples directly into the internal tank of the unit. In "Circulator" mode, you connect hoses from the unit's outlets to your external equipment (like a reactor jacket) to pump coolant through it.
Q3: What type of fluid should I use for -80°C operation?
A: For temperatures as low as -80°C, you need a high-purity alcohol (like ethanol) or a specialized low-temperature silicone oil. Always ensure the fluid's viscosity remains low enough for the pump to circulate it effectively at your target temperature.
Q4: What is the maximum pressure the pump can handle?
A: The pump pressure is ≤0.4MPa. Ensure your external equipment and tubing can withstand this pressure to avoid leaks or damage.
Q5: How do I connect the hoses for external circulation?
A: Connect the OUTLET (lower port) on the left side of the machine to the LOWER INLET of your external device. The RETURN flow from the UPPER OUTLET of your device should connect back to the INLET on the chiller.
Q6: What are the environmental requirements for operating this chiller?
A: The unit operates best in an environment between 5°C to 35°C with humidity ≤70%. Ensure there is adequate ventilation around the machine, especially for the air-cooled condenser at the back.
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