As the heart of the cold water machine compressor, its good or bad or not determine whether the whole set of the normal operation of the unit. And the main function of the compressor oil is lubrication, cooling, screw compressor lubricating oil also plays the role of capacity regulation. Thus, the lubricating oil can not be underestimated, so to share with you today is: cold water filling machine lubricating oil should pay attention to matters and oil change recommendations.
One, lubricating oil filling note
1, we give the cold water machine filling the lubricating oil must through the quality certification, and different brands of oil can not be mixed use. Different types of refrigerant should be corresponding to different lubricants, in particular, should pay attention to the problem of synthetic oil and mineral oil is not compatible. In the cold water machine before filling the oil system should ensure the cleanliness, welding slag and other impurities.
2, in the cold water unit should be used in the synthesis of oil, and to ensure that oil does not long time exposure in the atmosphere. When the first boot, the system should be completely vacuum treatment.
3, to ensure the normal operation of the unit, to deal with the system for desiccant treatment, it is recommended to use dry nitrogen gas through the system to dry, and then vacuum pumping.
4, when the customer for lubrication oil filling should ensure that the total amount of lubricating oil in the system to achieve the required amount of filling. If the customer's cold water machine system has been filled with enough oil, but in order to maintain the need to release part of the lubricating oil, then re filled with lubricating oil, as long as the amount of oil released can be added.
Two, some suggestions for the replacement of lubricating oil
1, Huanyouzhouqi: if the chiller compressor has been running for 10000 hours, should check a lubricating oil. If the compressor is running for the first time, it is recommended to replace the lubricating oil and clean the oil filter 2000 hours after the operation. Check whether the system is clean, if the chiller system operating condition is good, every 20000 hours or every 4 years to replace the lubricating oil.
2, to avoid the solid residue and metal impurities through the oil filter, which may cause damage to the bearing, it is recommended to install a differential pressure switch (optional). When the pressure difference between the two sides of the oil filter reaches the setting value, the pressure switch moves, the system is shut down to prevent the bearing in this case because of the serious damage to the oil.