Vacuum equipment often experiences malfunctions during use due to various factors. In order to ensure the normal operation of the vacuum equipment, it is necessary to repair the relevant components. However, the current composition of the vacuum pump maintenance team is quite complex, some are full-time after-sales service personnel from vacuum equipment manufacturers and distributors, some are part-time sales personnel from hardware stores, some are maintenance personnel and operators from vacuum equipment user enterprises, and there are also maintenance personnel from specialized electrical maintenance service companies in the market... Therefore, the professional ethics are uneven, and many problems have arisen.
1. Inability to correctly diagnose and analyze faults, blind disassembly and unloading are common occurrences
Some vacuum pump maintenance personnel, due to their unclear understanding of the structure and principle of the vacuum equipment, do not carefully analyze the cause of the malfunction, and cannot accurately determine the location of the malfunction. They blindly dismantle and unload the machinery based on the idea of "roughly and roughly", resulting in not only the original malfunction not being eliminated, but also new problems due to poor maintenance skills and processes. Therefore, when a mechanical failure occurs, detection equipment should be used for detection. If there is no detection equipment, traditional fault diagnosis methods and means such as "asking, looking, checking, and trying" can be used, combined with the structure and working principle of vacuum equipment, to determine the most likely location of the failure.
When determining faults in vacuum equipment, the commonly used methods are "elimination" and "comparison", following the order from simple to complex, from exterior to interior, and from assembly to component. It is important to avoid blindly disassembling and unloading without considering the details.
The reason for this is that such people still lack systematic learning and training on vacuum equipment and related electrical and mechanical knowledge systems, lack awareness of the operation process and correlation of vacuum equipment, and blindly take one step at a time.
2. The phenomenon of "replacement and repair" exists to varying degrees
The diagnosis and troubleshooting of vacuum equipment faults are relatively difficult. Some maintenance personnel always use the method of replacement testing, regardless of the size of the parts, as long as they believe that the parts that may cause the fault are replaced one by one, the results not only fail to eliminate the fault, but also replace the parts that should not be replaced at will, increasing user expenses.
Some faulty components can be repaired to restore their technical performance without the need for complex repair processes, but maintenance personnel require users to replace new parts and blindly adopt the method of "replacement and repair", resulting in serious waste.
The blind replacement test and blindly replacing repairable parts mentioned above still exist to varying degrees in some repair units. During maintenance, the cause and location of the malfunction should be carefully analyzed and determined based on the fault phenomenon. For repairable components, repair methods should be adopted to restore performance, and blind replacement of components should be avoided.
In addition, many of the replaced spare parts can be fully repaired and reused through new processes such as brush plating and spraying, but in actual work, maintenance workers are generally unwilling to carry out repairs. The reason why maintenance personnel are unwilling to repair damaged equipment is multifaceted: firstly, they lack necessary maintenance tools. Suitable and specialized dismantling tools and measuring instruments should be equipped; Electricians must be equipped with precise digital multimeters, voltage regulators, testers, and other tools. Without these tools, the repairman can only sigh at the piece.
The second is the lack of corresponding incentive mechanisms. The repairman worked hard to repair a expensive spare part, but did not receive any encouragement or reward. Over time, the repairman gradually lost his enthusiasm for repairing and reusing waste parts. Therefore, reward measures should be taken, based on the price, reuse value, reliability, and other aspects of spare parts, to reward personnel who repair spare parts as a percentage of the original spare parts price, and to link it with monthly and annual performance to encourage maintenance personnel's enthusiasm for repairing and reusing waste parts.
