The cleaning and maintenance of the chiller is of great care in autumn and winter!
How to ensure the normal operation of our chiller equipment in the cold winter? Now I will explain to you the relevant precautions and maintenance methods of the chiller when the ambient temperature is harsh in winter.
In summer, many companies need to run the chiller 24 hours, so the utilization rate is very high. However, after entering the autumn and winter, companies in some regions no longer need chillers for refrigeration, and only need to cool by cooling water towers. When the company stops using the chiller, it is still necessary to do a good job of maintaining the chiller to facilitate the normal operation of the chiller next year.
One, the cleaning steps of the chiller
1.Turn off the water source of the chiller, and clean up the water inside the unit components and pipelines, to avoid the residual water after the shutdown, rust the unit components, or the temperature is too low to frost the copper pipe; at the same time, unscrew the drain nut under the water pump to put the water inside the pump The remaining water is drained to prevent the water system from freezing due to too low ambient temperature, and the evaporator to burst and cause refrigerant leakage or damage to the water pump impeller.
2. Turn off the power and check whether each component is worn out (replace if there is any);
3. Clean the fan of the air-cooled chiller and keep it in a clean state;
4.The water tank of the water tank coil type evaporator, check whether there is any debris such as scale and remove it;
5. Understand the use of lubricating oil through data records, and regularly replace the lubricating oil according to the use standards to maintain good lubrication;
6. The cold water pipe of the chiller must be insulated, because the pipe insulation can not only prevent the serious loss of cold capacity, but also prevent the dew formed on the outer wall of the pipe. For example: the temperature of ice water is ten degrees, the ambient temperature is thirty degrees, a 25-meter-long metal pipe with a surface area of 25 square meters can radiate 750kcal/h, which is almost the cooling capacity produced by a three-hp compressor About 10% of the refrigeration capacity of the five-hp compressor;
7. The air-cooled chiller is one of the chiller models. The water at room temperature is cooled to a certain temperature through the compressor of the chiller to enhance cooling of the mold or machine. It is used as a stand-alone unit, and the heat sink is a built-in fan. There are three main types: Two interconnected systems: refrigerant circulation system, water circulation system, electrical automatic control system.
Second, the surface cleaning of the chiller is also very important
After shutdown, you can use cleaning tools to clean the surface of the unit. When it is dry, cover the unit with a cloth or gown to prevent dust and other debris from adhering to the unit, ensuring that the unit is clean when used next year Water chiller. Doing the above work when the unit is shut down can promptly find out the problem of the chiller and eliminate it, so as to ensure the stable performance of the unit, so that it can be put into use safely and quickly in the coming year. Another advantage is that the service life of the unit will be longer.
Human bodies need maintenance and regular physical examinations. The same applies to machinery and equipment. Only by cherishing and doing a good job in maintenance can its performance and use time be better guaranteed, and chillers are no exception!
