1. Different brands of refrigeration oil must not be mixed, especially mineral oil and synthetic ester oil must not be mixed.
2. If you replace different brands of refrigeration oil, be careful to remove the original refrigeration oil remaining in the system
3. Some oils have the property of hygroscopicity, so do not expose the refrigeration oil to the air for a long time. During installation, shorten the exposure time as much as possible and do a good job of vacuuming.
4. If the system has a compressor motor burnout failure, pay special attention to removing the remaining acidic substances in the system when replacing the new machine, and check the acidity of the refrigeration oil after 72 hours of commissioning. It is recommended to replace the refrigeration oil and dry filter to reduce the possibility of acid corrosion. After that, check or replace the refrigeration oil again after about one month of operation.
5. If the system has had an accident of water ingress, pay special attention to removing the water. In addition to replacing the refrigeration oil, pay special attention to detecting the acidity of the oil and replace the new oil and dry filter in time.
