In order to make the screw air compressor can operate normally and reliably and ensure the service life of the unit, it is necessary to develop a detailed maintenance plan, perform regular operation, regular maintenance, regular inspection and maintenance, so that the air compressor can keep clean, oil-free and dirt free.
1. Maintenance of main components is carried out with reference to:
Attention:
A. When repairing and replacing each component, it must be sure that the pressure in the air compressor system has been released, it has been separated from other pressure sources, the switch on the main circuit has been disconnected, and the safety sign that it is not allowed to close has been made.
B. The replacement time of compressor cooling lubricating oil depends on the use environment, humidity, dust and whether there is acid and alkali gas in the air. The newly purchased air compressor must be replaced with new oil within the specified time when it runs for the first time, and then replaced according to the normal oil change cycle.
C. When servicing and replacing the air filter or intake valve, remember to prevent any debris from falling into the compressor main chamber. Close the entrance of the host during operation. After the operation is completed, rotate several turns according to the rotation direction of the host by hand to make sure that there is no obstacle before starting.
D. The tightness of the belt must be checked every 2000 hours or so. If the belt is loose, it must be adjusted until the belt is tensioned. In order to protect the belt, it is necessary to prevent the belt from being scrapped due to oil contamination during the entire process.
E. The oil filter must be replaced with each oil change.
Second, clean cooler:
After the air compressor runs for a certain period of time, to remove the dust on the cooling surface, open the cover of the cooler purge hole on the fan support, and use the dust gun to purge the cooler until the dust on the cooling surface is cleared. If the cooling surface is too dirty to be cleaned, remove the cooler, pour out the oil in the cooler and close the four inlet and outlet to prevent the entry of dirt, then blow off the dust on both sides with compressed air or rinse with water, and finally dry the water stains on the surface. Put it back in place. Remember! Do not use hard objects such as iron brushes to scrape dirt, so as not to damage the radiator surface.
Third, discharge of condensate:
Moisture in the air may condense in the oil and gas separation tank, especially in wet weather, when the exhaust temperature is lower than the pressure dew point of the air or when the machine is shut down for cooling, more condensed water will be precipitated. Too much water in the oil will cause the emulsification of the lubricating oil, affecting the safe operation of the machine, such as: cause poor lubrication of the compressor host; The oil and gas separation effect becomes worse, and the pressure difference of the oil and gas separator becomes larger. Cause corrosion of machine parts. Therefore, the condensate discharge schedule should be established according to the humidity condition.
Condensate discharge method: It should be carried out after the machine is shut down, there is no pressure in the oil and gas separation tank, and the condensate is fully precipitated, such as before starting up in the morning.
① Screw out the front plug of the ball valve at the bottom of the oil and gas separation tank.
② Slowly open the ball valve drainage, until there is oil flow out, close the ball valve.
③ Screw on the ball valve before plugging.
Four, safety valve:
The safety valve has been adjusted before the whole machine leaves the factory. We do not advocate users to adjust the safety valve without permission. If it is necessary to adjust, it should be carried out under the guidance of the local labor safety department or the maintenance personnel of the company, otherwise the company will not be responsible for all consequences caused by this.
5. Maintenance work:
This section provides some compressor maintenance suggestions for common users.
① Weekly: a. Check the unit for abnormal sound and leakage; b Check whether the meter reading is correct; c. Check whether the temperature display is normal.
② Monthly: a. Check whether there is rust, loose place, if there is rust, rust oil or paint, loose place tight; b. Discharge condensate.
③ Every three months: a. Remove the outer surface of the cooler and the dust at the fan cover and fan blade; b. Fill lubricating oil on motor bearings; c. Check whether the hose is aging and cracking; d. Check the electrical components and clean the electric control box.
Six, compressor oil
In the running state, the oil level of the compressor should be maintained between the lowest and highest oil level, more oil will affect the separation effect, less oil will affect the lubrication and cooling performance of the machine, in the oil change cycle, if the oil level is lower than the lowest oil level, the lubricating oil should be added in time, the method is:
① Shut down and the internal pressure release is complete (confirm that there is no pressure in the system), pull down the main power switch.
② Play the oil filler on the oil and gas separation tank, add the appropriate amount of cooling lubricating oil.
③ The oil change time after the normal operation of the air compressor is referred to the regular maintenance table.
