Magnetic stirrer work maintenance
1. Move the mouth again: When the electric mixer is faulty, do not respond to the first action. You should first ask before and after the fault occurs and the fault phenomenon. For unfamiliar equipment, you should also be familiar with the circuit principle and structural characteristics, and abide by the corresponding rules. Before disassembly, fully familiarize yourself with the function, position, connection method, and relationship with other devices around. If there is no assembly drawing, you should disassemble and draw a sketch and mark it.
2, the first external and internal: should first check the equipment for obvious cracks, defects, understand its maintenance history, age, etc., and then check the machine. Before the disassembly, the surrounding fault factors should be excluded, and it can be disassembled after it is determined to be an internal fault. Otherwise, blind disassembly may worsen the equipment.
3, mechanical after the electrical: only after determining that the mechanical parts are not faulty, then carry out electrical inspections. When checking the circuit fault, you should use the testing instrument to find the fault location, and confirm the faultless fault after the contact, and then check the operational relationship between the line and the machine in order to avoid misjudgment.
4. Static and dynamic first: When the equipment is not powered, judge the quality of the electrical equipment buttons, transformers, thermal relays and fuses to determine the fault. Power-on test, listen to its sound, measure parameters, judge faults, and repair after Zui. For example, when the motor is out of phase, if the three-phase voltage value cannot be determined, it should be heard and the relative ground voltage measured separately to determine which phase is defective.
5, first clean and repair: For heavy-duty electrical equipment, first clean its buttons, wiring points, contact points, check whether the external control keys are malfunctioning. Many faults are caused by dirty and conductive dust.
6, after the power supply equipment: the failure rate of the power supply part of the entire faulty equipment accounted for a high proportion, so the first to repair the power supply can often get twice the result with half the effort.
7. First fault after commissioning: For the electrical equipment coexisting with commissioning and faults, the fault should be eliminated first, and then commissioning. The commissioning must be carried out under the premise of electrical line speed.
8, the first general after the special: due to the quality of assembly parts or other equipment failure caused by the failure, generally accounted for about 50% of common faults. The special faults of electrical equipment are mostly soft faults, which are measured and repaired by experience and instrumentation.
When the electric stirrer is damaged in the experiment, we must not be anxious. We should calmly deal with it. We will deal with it according to the 8 points we explained above. We will first judge the cause of the malfunction, and then we will be able to do more with less. In addition, we must also use it in daily use. Pay attention to the maintenance of the electric mixer to extend the life of the equipment as much as possible.
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