The daily cleaning, inspection and maintenance of equipment such as exhaust pipes, vacuum pumps, and condensers is the most economical and effective way to control the failure rate of vacuum furnaces. Matters needing special attention: When maintenance and maintenance personnel need to enter the vacuum tank, vacuum pump, hot water well and other parts for operation, they must confirm that there is no toxic and harmful gas such as CO in the area, and at the same time ensure that there is sufficient oxygen content inside, otherwise Accidents such as suffocation or CO poisoning may be caused.