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York industrial compressors are widely used in industries such as chemicals, food and beverage production, polysilicon, acetic acid, pharmaceutical synthesis, and natural gas processing, providing functions such as industrial cooling and gas compression. The control system uses Quentum TM and Quentum LX controllers, which are computers based on industrial systems. The operating system platform is Linux, and serial ports are used to communicate with peripheral IO boards in order to carry out data acquisition and control functions. As the operating time of the unit increases, issues such as controller malfunctions, black screens, and unintended automatic restarts often occur due to the aging of the main board, **which reduces the reliability and safety of the refrigeration unit’s operation and poses a serious threat to its stable performance over extended periods of time. As control cabinets are continuously being upgraded, York’s Global Quontum control cabinets are now on the latest HD series; the Quontum TM and LX models have been discontinued, and the manufacturer has largely stopped providing spare parts as well as maintenance services. Shandong Gonglenghui Network Information Technology Co., Ltd. can provide upgrade and renovation services for York’s entire range of chillers equipped with Quantum control systems, including but not limited to: RWB, RWF, RXB, RXF, YLBC,YS-S7, YBC, YLBC, CYK, RWK and other series of industrial refrigeration units. The main aspects of the upgrade include: the original Quinton 4 and Quinton 5 motherboards have been replaced with the latest Quinton 6 motherboards; the digital and analog boards have also been upgraded to their latest versions. The human-machine interface has been upgraded from a 10.4-inch screen to a 15-inch full-color touch screen, while the control system software has been updated from Quinton TM and Quinton LX to the latest version, Quinton HD. Introduction to the latest QNAP HD control system: The QNAP 6 motherboard features a control board equipped with a high-performance 4-core processor based on the ARM architecture; this main processor board provides 2 standard USB2.0 ports for future software upgrades and the backup of unit operation data ； It provides 1 standard Ethernet RJ45 port and 4 RS-485/RS-422 serial communication ports. The supported protocols include the serial protocols Frick® ASCII, Modbus ASCII, Modbus RTU, and Allen-Bradley DF1 (full- and half-duplex), as well as the Ethernet protocols Modbus TCP and Allen-Bradley Ethernet/IP ； Use separate modular industrial power supplies of 5V, 12V, and 24V. The upgraded Quantum 6-HD control system can perform all the control functions of the original Quantum system. It features a 15-inch color display with a main interface that shows content in Chinese; touch operation is simple, and it can display all the parameters of the original control system in real time ； It is possible to easily start and stop the compressor and oil pump from the main interface; manual operation of the slide valve simply involves tapping the upward arrow ▲ to increase, or the downward arrow ▼ to decrease ； The control cabinet can be connected to a network, and through settings, it is possible to make this unit operate and stop according to a schedule ； With the Quentum control systems of all units connected to each other, it is possible to easily view the operation status displayed on the Quentum HD screens of other units on the display screen of the Quentum HD control cabinet of any one of the refrigeration units ； Parameters such as set points can be read and downloaded using a regular USB flash drive; backup of historical fault data and software upgrades can also be carried out in the same manner through the USB port. The manual for the control system can be viewed and browsed on the screen using an embedded PDF browser. On the main monitor in the control room, it is possible to monitor all the operational visuals and data of this refrigeration unit in real time, just as if one were at the site of the equipment. The upgraded video connection at https://v.douyin.com/FLhqg3q/ features Web-based remote access, allowing multiple computer users on any network to access the same QNAP Q6-HD control system simultaneously without interference among them ； Users can customize common operating parameters, and can easily add or remove the common operating data displayed on the home screen ； The alarm interface is clear and intuitive; each alarm displays the fault description as well as the date and time. By clicking on any of the alarm details, the compressor’s status parameters at the time the alarm occurred can be viewed. The “Clear All” button can be used to remove all the alarms that have been resolved ； It can display and record the recent operational activities of the crew management personnel. With the upgraded Quantum HD control system, the operational stability and reliability of the units have **increased**.