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Repair of Toyo Furoku freeze-dryers, repair of Kobe Steel compressors, and repair of Maekawa compressors to ensure they remain within specified value ranges. Kuai Anjia primarily serves world-class refrigeration compressor brands: repair of York compressors, overhauls of GEA Grasso compressors, overhauls of VITER compressors, overhauls of Maekawa compressors, overhauls of Kobe Steel compressors, overhauls of HOWDEN compressors, etc. Its main services include compressor overhauls, debugging of refrigeration systems, and upgrading of control systems. Kuai Anjia holds the following certifications: ISO9001 for quality, environment, and occupational health ; CNPC market access permit, qualifications for refrigeration repair and installation. For on-site major overhauls and commissioning, most large-scale power generation units and petrochemical plants require that these tasks be completed quickly to avoid disruptions to production. The engineers at Kuai An Jia are capable of carrying out all the necessary procedures efficiently; our clients over the past decade serve as proof of this. By completing the work swiftly and getting the units up and running again in a timely manner, we demonstrate the quality of our technical services. All you need to do is make a call, and we will arrive at the site immediately to help you resolve any issues you may have. Pressure testing of screw oil pump, slide valve operation test ; Start the oil pump to lubricate parts such as the machine head; the oil pressure should be between 0.5 and 0.6 MPa. Press the button for increasing or decreasing load to activate the solenoid valve, and the spool valve should move smoothly without any sticking. Before adjusting, testing, and installing the coupling on the screw compressor unit, check the direction of rotation of the motor. Connect the coupling and verify that the error in centerline alignment is no more than Φ0.075 mm, and that the axis tilt is no more than 0.03 mm. The compressor should rotate smoothly without any obstruction when turned by hand after installation. Set the slide valve to position 0, start the compressor, and pay attention to factors such as vibration, oil temperature, oil pressure, and noise. Stop the compressor with the slide valve still in position 0; it should rotate easily when turned by hand after shutdown. For the vacuum test, the absolute pressure should be below 5.332 KPa. Repair of Toyo Fudō freeze-dryers, repair of Kobe Steel compressors, repair of Maekawa compressors. After a screw compressor has been operating for a certain period of time (usually 24 hours), it is necessary to record data such as suction pressure, discharge pressure, suction temperature, discharge temperature, oil pressure, oil temperature, and oil pressure difference. It is also important to check whether there are any abnormal vibrations, noises, or localized heating in the unit. After the unit operates continuously for about a week, if there are no abnormalities, then the major maintenance work on the screw compressor is successfully completed. In addition, detailed records of the usage and replacement of major repair parts and spare parts must be kept one by one and filed, to serve as a reference for the future maintenance management of screw compressors. Composition and working principle of screw refrigeration compressor units ; The company’s JZ2LG20 type screw refrigeration compressor unit is an open-type twin-screw compressor equipped with an economizer. The medium used for compression is ammonia; it operates under standard conditions of -15°C to 30°C. The volume ratio is 3.6, the pressure ratio is 5, and its cooling capacity is 628.2 KW. It includes: a compressor (comprising five parts: the casing, rotor, slide valve, shaft seal, and coupling), an air circuit system, an oil circuit system, a motor power system, and a control system. Kuai Anjia Industry’s mission is to deliver technical service solutions driven by continuous improvement and innovation, so as to make customers’ equipment operate more reliably, efficiently, safely, and sustainably, thereby creating value for them! The company’s employees place great emphasis on improving their own qualifications. For the repair of Dongfulong freeze-dryers, Kobe Steel compressors, and Maekawa compressors, the engineers hold various certifications such as safety officer certificates, special equipment operation certificates, certificates for eight types of technical roles, refrigeration technician certificates, welder certificates, and high/low voltage electrician certificates, among others. The core services of industrial refrigeration technology include three main categories: compressor overhauls, upgrades to control systems, and commissioning of industrial refrigeration systems. Kuai Anjia has mastered the core technologies of refrigeration units and primarily serves world-class brands such as GEA, York, Maekawa, and Hawton. Kuai Anjia (Jinan) Technology Co., Ltd. specializes in the repair of screw compressor refrigeration systems. The screw compressors in question were used by a pharmaceutical company in Shandong; due to control issues with the sliders, the compressors experienced over-compression, which led to severe internal wear. Continuing to operate these compressors would have resulted in even greater damage. Kuai Anjia sent three technical engineers and one industrial control engineer to the site promptly to address the problems related to the electrical circuits and the compressors themselves. They managed to complete the repairs on both the high- and low-temperature units as well as the control cabinets in a short amount of time. Our skilled engineers analyze the efficiency and stability of the units, carry out adjustments, and conduct thorough tests to ensure their reliability and high performance. Striving for continuous improvement in technology is our unwavering pursuit, while ensuring customer satisfaction is our eternal goal! Software design for microcontroller operation of the 18B20: Resetting: First, it is necessary to reset the DS18B20 chip; this is done by the microcontroller sending a low-level signal to the DS18B20’s single-wire interface for at least 480 uS.