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How to perform basic maintenance of permanent magnet inverter air compressor

How to perform basic maintenance of permanent magnet inverter air compressor

  • Categories:Industry News
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  • Time of issue:2020-10-14
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(Summary description)Permanent magnet variable frequency air compressor is a new generation of energy-saving products that will be applied and promoted in the context of encouraging energy saving and emission reduction. Permanent magnet variable frequency air compressor is the choice of our customers, with large displacement and equipped with permanent magnet motor, which has more outstanding energy-saving performance compared with ordinary FM motor. Especially at low speed, it can still maintain high motor efficiency. The motor is small in size, generally about 1/3 of an ordinary FM motor, and easy to disassemble and install. With the rapid development of China's economy, more and more attention is paid to the technology of low consumption, and this technology has attracted attention. Can the frequency conversion speed control technology be applied to the field of air compressor supply, which can save electricity and improve the air compressor

How to perform basic maintenance of permanent magnet inverter air compressor

(Summary description)Permanent magnet variable frequency air compressor is a new generation of energy-saving products that will be applied and promoted in the context of encouraging energy saving and emission reduction. Permanent magnet variable frequency air compressor is the choice of our customers, with large displacement and equipped with permanent magnet motor, which has more outstanding energy-saving performance compared with ordinary FM motor. Especially at low speed, it can still maintain high motor efficiency. The motor is small in size, generally about 1/3 of an ordinary FM motor, and easy to disassemble and install. With the rapid development of China's economy, more and more attention is paid to the technology of low consumption, and this technology has attracted attention. Can the frequency conversion speed control technology be applied to the field of air compressor supply, which can save electricity and improve the air compressor

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-10-14
  • Views:0
Information

Permanent magnet variable frequency air compressor is a new generation of energy-saving products that will be applied and promoted in the context of encouraging energy saving and emission reduction. Permanent magnet variable frequency air compressor is the choice of our customers, with large displacement and equipped with permanent magnet motor, which has more outstanding energy-saving performance compared with ordinary FM motor. Especially at low speed, it can still maintain high motor efficiency. The motor is small in size, generally about 1/3 of an ordinary FM motor, and easy to disassemble and install.

With the rapid development of China's economy, more and more attention is paid to the technology of low consumption, and this technology has attracted attention. The possibility of applying the frequency conversion speed control technology in the field of air compressor supply, which can save power and improve the performance and quality of air compressor supply at the same time, has become a topic of our concern.

How to carry out basic maintenance of permanent magnet variable frequency air compressor? In order to ensure the normal and reliable operation of permanent magnet variable frequency air compressor and the service life of the unit, it is necessary to make a detailed maintenance plan, implement dedicated operation, regular maintenance, regular inspection and maintenance, and keep the air compressor set clean and free of oil and dirt.

永磁变频空压机

1. When repairing and replacing each part according to the above table, you need to make sure that the pressure in the permanent magnet inverter air compressor system has been released, isolated from other pressure sources, the switch on the main circuit has been closed, and the safety sign of not allowed to close the gate has been made.

2. The replacement time of compressor cooling lubricant depends on the use environment, humidity, dust and the presence of acid and alkali gas in the air. Newly purchased air compressor needs to be replaced with new oil after 500 hours of operation, and then every 4000 hours according to the normal oil change interval. If the annual running time is less than 4000 hours, the oil should be replaced once a year.

3. The oil filter needs to be replaced after 300-500 hours of start-up operation of permanent magnet inverter air compressor, after the second use of 2000 hours, and then every 2000 hours according to the normal time.

4. When repairing and replacing the air filter or air inlet valve, remember not to let any debris fall into the main chamber of the compressor, and close the main engine inlet when operating. After the operation, turn the main engine several times in the rotating direction by hand to make sure there is no obstacle before turning on the machine.

5. When the permanent magnet inverter air compressor is running, check the belt tightness about once every 2000 hours. If the belt is slack, you need to adjust the belt until it is tightened; in order to protect the belt, you need to prevent the belt from being scrapped due to oil contamination throughout the process.

6. Every time you change the oil, you need to change the oil filter at the same time.

How to clean the cooler of permanent magnet inverter air compressor? Let's take a brief look at the following.

For every 2000 hours of operation, in order to remove the dust on the cooling surface, open the cooler blowing hole cover on the fan bracket and use the dust blowing air gun to blow the cooler until the dust on the cooling surface is completely cleaned. If the cooling surface of Shangruo is heavily soiled and hard to clean, remove the cooler, pour out the oil in the cooler and seal the four inlets and outlets to prevent dust from entering, then blow off the dust on both sides of the permanent magnet inverter air compressor with compressed air or rinse it with water, then blow dry the water stains on the surface and put it back to its original position.

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(1) The air compressor has abnormal noise 1. There is a sound in the cylinder ① If foreign objects or broken valve plates fall into the cylinder, clean up the foreign objects or broken valve plates; ② The top of the piston collides with the cylinder head, and the clearance should be adjusted; ③ The large end tile, small end bushing and piston transverse hole of the connecting rod are excessively worn and should be replaced; ④ Excessive wear of the piston ring, impact occurs in the ring groove during operation, replace the piston ring; ⑤ There is water in the cylinder.  2. There is a sound in the valve ① If the inlet and exhaust valve groups are not pressed tightly, the tightening nut of the square cover of the valve chamber should be tightened:; ② If the valve spring is damaged, replace it in time; ③ Loosen the bolts and nuts of the air valve, and tighten the nuts; ④ The gap between the valve plate and the bonnet is too large, adjust the gap, and replace the valve plate if necessary 3. There is a sound in the crankcase ① The connecting rod bush is worn out excessively, replace it with a new one, ② Connecting rod bolts are not tightened, tighten them; ③ If the flywheel is not installed tightly or the key is too loose, it should be installed tightly. ④ The main bearing is damaged, replace the bearing; ⑤ The oil retaining ring on the crankshaft is loose, replace it with a new oil retaining ring. (2) Failure of the lubrication system 1. The oil strike needle is broken and should be replaced; 2. If the oil level is too high or too low, adjust the oil level to the specified range 3. If the oil grade is wrong, the oil should be changed according to the instructions: 4. The lubricating oil is too dirty and should be replaced with clean lubricating oil. (3) The pressure at all levels is abnormal (low or high) 1. The valve plates or springs of the intake and exhaust valves are damaged and leak, and should be replaced; 2. There is dirt on the valve seat of the intake and exhaust valves, air leakage, clean up the dirt; 3. The air filter is seriously blocked and should be cleaned; 4. If there is air leakage in the gas pipeline or air leakage in the cooler, repair it; 5. Piston rings and cylinders are severely worn and leak air and should be replaced. (4) Exhaust temperature or cooling water drainage temperature is too high (referring to water-cooled type) 1. Cylinder brushing makes the cylinder overheat, repair the cylinder and piston; 2. The exhaust valve is leaking or the valve spring is damaged, the valve plate is damaged, and the damaged parts are replaced; 3. Insufficient cooling water, increase the cooling water flow; 4. The cooling water circuit is blocked, the scale in the cylinder, cylinder head, and cooler is too thick or blocked, clean the scale or blockage; 5. The inlet and exhaust valves are charcoal, so that the gas passage is not smooth, and the charcoal is cleaned up. (5) Exhaust pressure gauge jumps 1. The intake and exhaust valve sheets or springs are stuck, overhaul; 2. The pressure gauge is damaged, replace it; 3. There is a foreign body in the instrument pipeline. Clean and blow out. (6) The exhaust volume is reduced 1. The air valve is leaking, repair it by grinding or replace it with a new one; 2. Excessive wear of piston ring, oil scraping ring and cylinder, replace the worn parts; 3. The air filter is blocked, the air pipeline is leaking, clean the dust under the filter screen, and repair the pipeline; 4. The clearance at the top dead center of the piston is too large, reduce the cylinder gasket and the clearance volume, 5. If the speed of the air compressor is lower than the rated speed, check the line voltage, frequency, overhaul or replace the motor. (7) Mechanical failure The piston ring is stuck, the cylinder is dry-grinded, the crankshaft connecting rod is seized, the rolling bearing is damaged, the assembly clearance is too small or the lubrication If the lubricating oil is too dirty and the oil level is too low, the assembly clearance should be adjusted or the lubricating oil should be replaced.
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