1. Items of three-level maintenance of air compressor:
1. Replace the air filter;
2. Replace the oil filter;
3. Replace the oil-gas separator;
4. Replace the lubricating oil;
2. Specific operation method (the following operation needs to be shut down and power off and ensure that there is no pressure in the machine);
1. Replace the air filter: remove the screw at the tail of the air filter cover, remove the tail of the cover, remove the air filter locking screw, take out the air filter, install the new filter, and replace the filter and cover in reverse steps.
2. Replace the oil filter: Use a special tool to lock the filter part and rotate it forward to unscrew the filter, clean the filter base with a clean cloth and apply a little oil, apply a little oil on the sealing ring of the new oil filter, install the new filter, and lock it with a special tool.
3. Replace the oil separator: The method is the same as replacing the oil filter.
4. Replace the lubricating oil:
a. When the oil temperature is between 30 and 60C, the viscosity will decrease and it will not be hot to the touch. It will also help drain the residual oil of the unit. Therefore, if the oil is cold when changing the oil, start the machine and run it for 2-3 minutes first.
b. When changing the oil, make sure that the unit is pressure-free. First disassemble the oil filling nut of the oil-gas separation barrel and prepare the residual oil in a suitable container. Open the drain valve under the barrel, and use your hands to drain the oil from time to time, and adjust the machine head pulley to help drain the oil stored in the machine head.
c. After the oil is completely drained, close the drain valve and inject new lubricating oil. The amount of oil injected is 2-3cm behind the oil level mirror (this is an empirical value, and the actual oil level needs to be observed when the machine is turned on and loaded). After the oil is injected, install the oil filling nut and lock it, remove the air intake valve, and inject a small amount of lubricating oil from the air intake of the machine head. The amount of oil should be two-thirds of the rotor immersed. Install the air intake valve and clean the surface of each component of the air compressor.
3. Test machine
After power on, start the air compressor directly, listen for any abnormal sounds, observe for any oil leaks, and check if the oil level is appropriate (the oil level should be observed during loading, and the position should be between 1/2 and 2/3 of the oil level mirror). Otherwise, add more and replenish less.
Note: Due to the large number of air compressor brands and models, this article is for reference only. It is recommended to follow the product maintenance guidance provided by the manufacturer for actual operation.