Daily maintenance and maintenance of screw air compressor Abstract: Routine maintenance and maintenance of screw air compressor In order to ensure that the screw air compressor can operate normally and reliably to ensure the service life of the unit, a detailed maintenance plan must be established and executed. People's operation, regular maintenance, regular inspection and maintenance make the screw-type air compressor unit clean, oil-free and dirt-free.
The importance of routine maintenance of screw-type air compressors: According to statistics of developed countries in the Western countries, the normal service life of a screw air compressor is about 30 years, of which fixed assets investment accounts for about 12% of its total cost of life, and the rest 88 % is operating costs. Efficient and correct scheduled maintenance can save up to 50% in operating costs.
1.1 Basic Maintenance In order for the screw air compressor to operate normally and reliably to ensure the service life of the unit, a detailed maintenance plan must be formulated to perform scheduled operation, regular maintenance, regular inspection and maintenance, and to maintain the screw air compressor unit. Clean, oil-free, dirt-free.
The main components are maintained according to the following table:
Note: Cleaning cycle A. When repairing and replacing parts according to the above table, it must be determined that the pressure in the screw air compressor system has been released and has been separated from other pressure sources. The switch on the main circuit has been disconnected and it is not ready to close. Safety signs.
B. The replacement time of the cooling lubricant for the air compressor depends on the use environment, humidity, dust, and whether there is acid and alkaline gas in the air. The newly purchased screw-type air compressor must be replaced with new oil after 500 hours of operation for the first time, and then replaced every 4000 hours according to the normal oil change cycle. Machines with less than 4000 hours of annual operation should be replaced once a year.
C. The oil filter must be replaced within 300-500 hours of the first start-up operation, and replaced after the second use of 2000 hours, and then replaced every 2000 hours as normal time.
D. Always remember to prevent any debris from falling into the air compressor main unit cavity when servicing or replacing the air filter or intake valve. When the operation is completed, the inlet of the host is closed. After the operation is completed, it is necessary to manually rotate the main shaft in several rotations to confirm that there is no obstruction before starting up.
E. Check the tightness of the belt after every 2000 hours of operation of the machine. If the belt is loose, adjust it until the belt is tight. In order to protect the belt, the belt must be prevented from being scrapped due to oil contamination during the entire process.
F. Every time you change oil, you have to change the oil filter at the same time.
G. Replace parts as much as possible with original company parts, otherwise matching problems will occur and the supplier will not be responsible.
1.2 Clean the cooler screw air compressor for about every 2000h, in order to remove the heat surface dust, the fan bracket on the cooler purge hole cover open, with a dust blowing air gun to the cooler purging, until the heat surface dust blown Sweep clean. If the radiating surface is serious dirt and difficult to clean, you can remove the cooler, pour the oil out of the cooler and close the four inlets and outlets to prevent the entry of dirt, then use compressed air to blow off both sides of the dust or use water Rinse and finally dry the water stain on the surface. Put it back in place.
Remember! Do not scrape dirt with hard objects such as iron brushes to avoid damaging the heat sink surface.
1.3 Drain Condensate Moisture in the air may condense in oil and gas separation tanks, especially in wet weather. When the exhaust temperature is lower than the pressure dew point of the air or the cooling is stopped, more condensation water will precipitate. Excessive water content in the oil will cause emulsification of the lubricant, affecting the safe operation of the machine and possible causes. Caused poor air compressor host lubrication. The separation of oil and gas deteriorated, and the differential pressure of oil and gas separators increased. Cause mechanical corrosion.
Therefore, a condensate discharge schedule should be established based on humidity conditions.
The condensate discharge method should be performed after the machine is shut down, there is no pressure inside the oil and gas separation tank, sufficient cooling, and condensation water is sufficiently precipitated, such as before the start of the morning.
1 Open the air release valve first to remove the air pressure 2 Screw out the screw plug before the ball valve at the bottom of the oil separation tank.
3 Slowly open the ball valve until the oil flows out and close the ball valve.
4 Screw the plug before screwing it on.
The safety valve safety valve has been set before leaving the factory. The supplier does not encourage users to adjust the safety valve. If adjustment is really needed, it should be conducted under the guidance of the local labor and safety department or supplier maintenance personnel to avoid adverse consequences.
Maintenance Suggestions For general users, provide some air compressor maintenance suggestions. Users can refer to the implementation.
1 Weekly:
a. Check whether the unit has abnormal noise and leakage b Check whether the meter reading is correct c. Check if the temperature display shows normal.
2 monthly:
a. Check if there is any rust or looseness in the machine. If there is corrosion, apply rust to oil or paint. Loosely tighten. b. Drain condensate.
3 every three months:
a. Remove the dust on the outer surface of the cooler and the fan cover and blades b. Fill the motor bearings with oil. c. Check the hose for aging and cracking d. Inspect the electrical components and clean the electrical control box.
When the compressor is filled with oil, the oil level of the compressor should be maintained between the minimum and maximum oil levels. Oil will affect the separation effect. Less oil will affect the lubrication and cooling performance of the machine. During the oil change period, If the oil level is lower than the minimum oil level, you should add oil in time by:
1 When the internal pressure of the machine stops, release the pressure (make sure the system is free of pressure) and pull down the power switch.
2 Open the oil filling port on the oil and gas separation tank and add an appropriate amount of cooling lubricant.
3 See the regular maintenance schedule for the oil change time after normal operation of the air compressor.
The importance of routine maintenance of screw-type air compressors: According to statistics of developed countries in the Western countries, the normal service life of a screw air compressor is about 30 years, of which fixed assets investment accounts for about 12% of its total cost of life, and the rest 88 % is operating costs. Efficient and correct scheduled maintenance can save up to 50% in operating costs.
1.1 Basic Maintenance In order for the screw air compressor to operate normally and reliably to ensure the service life of the unit, a detailed maintenance plan must be formulated to perform scheduled operation, regular maintenance, regular inspection and maintenance, and to maintain the screw air compressor unit. Clean, oil-free, dirt-free.
The main components are maintained according to the following table:
Note: Cleaning cycle A. When repairing and replacing parts according to the above table, it must be determined that the pressure in the screw air compressor system has been released and has been separated from other pressure sources. The switch on the main circuit has been disconnected and it is not ready to close. Safety signs.
B. The replacement time of the cooling lubricant for the air compressor depends on the use environment, humidity, dust, and whether there is acid and alkaline gas in the air. The newly purchased screw-type air compressor must be replaced with new oil after 500 hours of operation for the first time, and then replaced every 4000 hours according to the normal oil change cycle. Machines with less than 4000 hours of annual operation should be replaced once a year.
C. The oil filter must be replaced within 300-500 hours of the first start-up operation, and replaced after the second use of 2000 hours, and then replaced every 2000 hours as normal time.
D. Always remember to prevent any debris from falling into the air compressor main unit cavity when servicing or replacing the air filter or intake valve. When the operation is completed, the inlet of the host is closed. After the operation is completed, it is necessary to manually rotate the main shaft in several rotations to confirm that there is no obstruction before starting up.
E. Check the tightness of the belt after every 2000 hours of operation of the machine. If the belt is loose, adjust it until the belt is tight. In order to protect the belt, the belt must be prevented from being scrapped due to oil contamination during the entire process.
F. Every time you change oil, you have to change the oil filter at the same time.
G. Replace parts as much as possible with original company parts, otherwise matching problems will occur and the supplier will not be responsible.
1.2 Clean the cooler screw air compressor for about every 2000h, in order to remove the heat surface dust, the fan bracket on the cooler purge hole cover open, with a dust blowing air gun to the cooler purging, until the heat surface dust blown Sweep clean. If the radiating surface is serious dirt and difficult to clean, you can remove the cooler, pour the oil out of the cooler and close the four inlets and outlets to prevent the entry of dirt, then use compressed air to blow off both sides of the dust or use water Rinse and finally dry the water stain on the surface. Put it back in place.
Remember! Do not scrape dirt with hard objects such as iron brushes to avoid damaging the heat sink surface.
1.3 Drain Condensate Moisture in the air may condense in oil and gas separation tanks, especially in wet weather. When the exhaust temperature is lower than the pressure dew point of the air or the cooling is stopped, more condensation water will precipitate. Excessive water content in the oil will cause emulsification of the lubricant, affecting the safe operation of the machine and possible causes. Caused poor air compressor host lubrication. The separation of oil and gas deteriorated, and the differential pressure of oil and gas separators increased. Cause mechanical corrosion.
Therefore, a condensate discharge schedule should be established based on humidity conditions.
The condensate discharge method should be performed after the machine is shut down, there is no pressure inside the oil and gas separation tank, sufficient cooling, and condensation water is sufficiently precipitated, such as before the start of the morning.
1 Open the air release valve first to remove the air pressure 2 Screw out the screw plug before the ball valve at the bottom of the oil separation tank.
3 Slowly open the ball valve until the oil flows out and close the ball valve.
4 Screw the plug before screwing it on.
The safety valve safety valve has been set before leaving the factory. The supplier does not encourage users to adjust the safety valve. If adjustment is really needed, it should be conducted under the guidance of the local labor and safety department or supplier maintenance personnel to avoid adverse consequences.
Maintenance Suggestions For general users, provide some air compressor maintenance suggestions. Users can refer to the implementation.
1 Weekly:
a. Check whether the unit has abnormal noise and leakage b Check whether the meter reading is correct c. Check if the temperature display shows normal.
2 monthly:
a. Check if there is any rust or looseness in the machine. If there is corrosion, apply rust to oil or paint. Loosely tighten. b. Drain condensate.
3 every three months:
a. Remove the dust on the outer surface of the cooler and the fan cover and blades b. Fill the motor bearings with oil. c. Check the hose for aging and cracking d. Inspect the electrical components and clean the electrical control box.
When the compressor is filled with oil, the oil level of the compressor should be maintained between the minimum and maximum oil levels. Oil will affect the separation effect. Less oil will affect the lubrication and cooling performance of the machine. During the oil change period, If the oil level is lower than the minimum oil level, you should add oil in time by:
1 When the internal pressure of the machine stops, release the pressure (make sure the system is free of pressure) and pull down the power switch.
2 Open the oil filling port on the oil and gas separation tank and add an appropriate amount of cooling lubricant.
3 See the regular maintenance schedule for the oil change time after normal operation of the air compressor.
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