What are the winter antifreeze measures for industrial chiller units?

What are the winter antifreeze measures for industrial chiller units?

Anti freezing of the host: Close the inlet and outlet valves of the host condenser and evaporator, open the drain and vent valves, and then use compressed air to blow off the remaining water. Anti freezing of water pump: Close the inlet and outlet valves of the refrigerant water pump, open the water pump drainage valve and vent valve, and drain the water.

Open the low point valve of the cooling water system, drain the cooling water, and open the water pump drain valve. After the system water is drained, to prevent rainwater from entering the cooling tower, close the main outlet valve of the cooling tower, open the drain valve of the cooling tower water collection tray, and timely drain the rainwater from the drain valve.

As the temperature drops, winter is approaching. For Низкотемпературные холодильники LC -25°C ~ -5°C, due to the use of water-cooled heat dissipation, there is no water cooling system for the water-cooled machine. As long as the fan needs antifreeze for the heat dissipation part of the air-cooled machine, the focus should be on the smooth oil of the fan. If it operates continuously, there is no need to worry about the antifreeze problem of the smooth oil. If the chiller is used intermittently or for a long time, attention should be paid to antifreeze.

If not in use for a long time, the air cooler should be cleaned and coated with maintenance oil, which can be waterproof to avoid frostbite caused by cold winter weather. If used intermittently, the smooth oil of the fan should be scraped clean during shutdown, and an appropriate amount of smooth oil should be added during use. Under the normal operation of industrial chillers, ensuring sufficient water flow and pressure will not cause the cooling water to freeze.

Correct use of Antifreeze to prevent freezing damage of chiller

Antifreeze coolant is a coolant with antifreeze function, which can be used for winter antifreeze, extending the service life of lasers and coolers, and damaging the sealing of pipelines. There are multiple antifreeze formulas available on the market for selection. In fact, we have some requirements for the coolant of the chiller, and improper selection or use may damage the internal pipes of the equipment.

matters needing attention

If the equipment shutdown time is short, it is recommended to start the refrigeration unit separately and continue running to maintain normal working water temperature. In addition, please pay attention to the operation of the cooler when the power is cut off.

2. If the equipment does not work at night, to ensure no power outage, please open the cooler separately and adjust the low and high temperature systems to 5-10 ℃ to save energy. Ensure that the cooling medium circulates and the water temperature is not below freezing point.