In the chemical industry, petrochemical industry, and many other industries, chemical pumps, centrifugal pumps, magnetic pumps and other equipment are repaired in order to restore their functions after deterioration or failure, including all kinds of planned maintenance and unscheduled fault maintenance and other maintenance. The basic contents of pump equipment maintenance include: equipment maintenance, equipment inspection, equipment repair and replacement. Pump maintenance type Post accident maintenance In the maintenance strategy after the equipment works to the occurrence of obvious faults, the measures taken are to dismantle the damaged equipment or components for repair or renewal. characteristic: ① The cost of maintenance is high and a waste of time, delaying normal production. ② Reserve various spare parts for replacement; Allocate more maintenance workers to deal with maintenance. Regular preventive maintenance Go to the site for maintenance according to the predetermined time interval, and repair or replace the equipment before major faults occur. characteristic: ① The maintenance cost is less than that after the accident. ② Improper maintenance interval will cause unnecessary excessive maintenance. Condition monitoring and maintenance Based on the actual working condition of the equipment, it is implemented through the monitoring results of the equipment. Whether to repair depends on abnormal phenomena such as mechanical vibration, bearing temperature and running noise. If a selected parameter reaches the predetermined critical value, the equipment will be shut down for maintenance, so as to avoid more serious accidents. characteristic: ① The maintenance goal is clear and the production efficiency is high. ② It is necessary to purchase corresponding testing equipment and train personnel. Standard preventive maintenance procedures Daily inspection work content ① Check whether the discharge pressure of the pump is normal. ② Check the sound, vibration and bearing temperature when the pump is running. ③ Check the pump body and auxiliary pipelines for leakage. ④ Check whether the coupling guard is loose. ⑤ Check the amount of lubricating oil and sealing cooling water. ⑥ Keep the equipment clean. ⑦ If any abnormality is found, report to the dispatcher.