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As the temperature drops, the winter is getting closer. Last year, many customers' industrial chillers appeared to be freezing, and they reminded everyone to do antifreeze work as soon as possible.
The winter mode has been opened in most parts of the country. Please pay attention to the antifreeze of refrigeration equipment and pipelines:
1. Please vent the equipment and pipes in the winter without using water;
2. The air conditioning system needs to run in winter, please ensure that the power is constantly flowing, keep the heat source, and ensure the pump runs;
3. The outdoor pipeline must check and keep the insulation layer good;
4. In the northern and western regions, the temperature in winter is very low, and the air conditioning system usually has a fresh air preheating device. Please ensure that the preheating is effective;
5. According to the local temperature, properly add antifreeze;
6. Equipment management personnel should pay attention to the inspection and maintenance work, pay attention to the weather forecast, and take timely measures to prevent frost.
For the refrigeration system, flowing water is a good energy carrier. Once the water freezes, it will harm people!
In the winter, especially when the ambient temperature is below 5 degrees, some users will disable the industrial chiller, but the suspension is not as simple as unplugging. Some essential precautions must be followed in strict steps.
Antifreeze and antirust
Industrial chiller (chiller) and machine room water system, with a watershed of +4.4 °C. If the temperature in the machine room is above this temperature, please keep the condenser and evaporator of the industrial chiller (chiller) filled with water to reduce corrosion; Conversely, thoroughly drain the water from the industrial chiller (chiller) or add antifreeze and mix well.
In the case of the water system of the heat pump unit, in the case of winter use, it is necessary to ensure that the unit and the water pump cannot be powered off, and the water line valves are all open.
When the cooling tower is not in use in winter, please discharge the cooling water to avoid freezing the cooling tower or system piping.
Care should be taken in the scroll, piston, screw and centrifugal units of water-cooled chillers.
If the user is using a centrifugal unit, please pay attention to lock oil and lock fluorine during the deactivation. The specific operation process can consult the after-sales service/technical consulting engineer arranged by each unit of the company.
Check the leak work carefully
Thorough and thorough leak detection of industrial chillers (chillers), and treatment of leaks to avoid long-term leakage during decommissioning, resulting in unnecessary losses.
Prevent damage to electrical components
Industrial chiller (chiller) starter cabinet and control cabinet electrical wiring, please be sure to tighten regularly to avoid poor contact caused by heat, damage to electrical components or units, resulting in losses! Check and clean the contactor regularly.
Regularly change lubricants
As with the maintenance of the car, the lubricant and the three cores must be replaced after the running-in period. If the air conditioning unit used has been replaced for a long time or has never been replaced with lubricating oil, drying filter, oil filter, etc., remind you to use the manufacturer's original genuine parts maintenance and maintenance unit to extend the life of the unit.