Abstract：As the supply center of the medical negative pressure of the whole hospital, the central negative pressure unit has
supported the entire hospital negative pressure supply, whose importance is self-evident. Maintaining the stability of the negative
pressure supply of the hospital is the precondition for ensuring the negative pressure suction. This paper is aimed at finding out the
methods and ideas of equipment maintenance and improving the maintenance ability of equipment maintenance staff through the
maintenance of the negative pressure unit. According to performance of the faulted equipment, the specific point of malfunction was
determined by using some desktop maneuvers-exclusion, clear classification and answering reasons. Finally, the malfunction point
was determined. Due to a long time employ of the solenoid valve, the closing function of closed rubber stoppers got poor, which led
to the gas tank being filled with water and then affected the negative-pressure storage capacity. After draining away water in the tank
and replacing the solenoid valve, the equipment returned back to normal. Although the maintenance took a long time, maintenance
staff had found a new way to repair equipment by the desktop maneuver of answering why and which laid foundation for future work.
王恩运a，王永琳a，薛莉a，张文军b. 基于桌面推演的中央负压机组维修案例分析[J]. 中国医疗设备, 2018, 33(11): 99-101.
WANG Enyuna, WANG Yonglina, XUE Lia, ZHANG Wenjunb. Maintenance Cases Analysis of Central Negative Pressure Unit Based on Desktop Deduction. China Medical Devices, 2018, 33(11): 99-101.
