How should an oil-free screw blower be maintained?
Release date:
2022-12-01
An oil-free screw blower is a mechanical product that requires maintenance during operation. Below, we’ll introduce the maintenance methods for the screw blower we purchased. 1. Daily check whether the oil level, exhaust temperature, and exhaust pressure are normal and free of unusual noises.
Oil-free screw blower It is a mechanical product that requires maintenance during use. Below, we’ll introduce the maintenance methods for the screw-type blowers we’ve purchased.
1. Check daily whether the oil level, exhaust temperature, and exhaust pressure show any abnormal noises.
2. Before starting up each week, open the separator’s drain valve to release condensate, check for leaks, inspect the safety valve, and visually examine the belt for wear.
3. Regularly inspect the intake control valve, pressure valve, electrical cabinet terminal blocks, safety valve, and cooling fan.
4. Regularly clean the cooler and test the reliability of the safety valve.
5. Regularly replace the oil filter element, oil separator filter element, air intake filter element, and lubricating oil.
Oil-free screw blower The maintenance and replacement guidelines for filters and oil elements are as follows.
The oil-free screw blower’s air filter is a component that removes dust and dirt from the air. The filtered, clean air then enters the compression chamber of the screw rotor for compression. Due to the internal clearances within the screw machine, this filter can only capture particles smaller than 15 microns. If the air filter becomes clogged or damaged, large quantities of particles larger than 15 microns will enter the screw machine’s circulation system. This not only significantly shortens the service life of the oil filter and fine oil separation element but also allows substantial particles to directly enter the bearing housing. The accelerated wear of the bearings increases the clearance between the rotors, reducing compression efficiency and even causing the rotors to seize within the cylinder bore.
New Oil-free screw blower After 500 hours of operation, the oil filter element should be replaced. Use a specialized wrench to remove the oil filter element. Remember to add spiral oil before installing the new filter element. It is recommended to replace the filter element every 1,500 to 2,000 hours. When changing the engine oil, the oil filter element should also be replaced at the same time. In harsh operating environments, the oil-change interval should be shortened. It is strictly prohibited to exceed the recommended service life of the oil filter. Otherwise, if the filter element becomes severely clogged and the pressure differential exceeds the bypass valve’s limit, the bypass valve will automatically open. A large amount of contaminants and particles will then directly enter the screw compressor unit randomly, leading to serious consequences. The replacement of diesel engine oil filters and diesel oil filters should meet the maintenance requirements for diesel engines; the replacement procedure is similar to that for spiral oil filter elements.
The oil-free screw blower oil-gas separator is the component that separates screw lubricating oil from compressed air. Under normal operating conditions, the oil-gas separator has a service life of approximately 3,000 hours; however, the quality of the lubricating oil and the filtration accuracy of the air significantly affect its service life. Therefore, in harsh environments, it is necessary to shorten the maintenance and replacement intervals for the air filter element, and it may even be advisable to install a pre-filter. The oil-gas separator should be replaced when it malfunctions or when the pressure difference between the inlet and outlet exceeds 0.12 MPa. Otherwise, this could lead to motor overload, damage to the oil-gas separator, and oil leakage. Replacement procedure: Remove the control pipe fitting installed on the oil-gas tank cover. Take out the return oil pipe, which extends into the oil-gas tank, from the tank cover, and remove the fastening bolts on the tank cover. Disassemble the top cover of the oil tank and clean out any accumulated oil. Remove the asbestos gasket and dust from the top cover. Install the new oil-gas separator. Be sure to properly align and secure the upper and lower asbestos gaskets. When pressing the gaskets into place, ensure they are neatly arranged; otherwise, the gaskets could get punctured. Reinstall the top cover, return oil pipe, and control pipe exactly as they were originally positioned, and check for any leaks.
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