What are the detection methods for micro-motor failures in dental clinics?
Micromotors in dental clinics have been used for a long time, and some of these and other failures will occur more or less. The failures caused by electrical connections account for a large proportion, and it is often easy for people to find the point of failure during inspection. How to judge whether the electrical connection point is in good contact, you can use the following 5 methods:
1. Tighten the bolts: re-tighten all the electrical connection points. If there is any looseness, the contact will be poor.
2. Visual inspection: check the connection points for discoloration, arc burns, breaks, etc.
3. Electrical inspection: Use a double-arm bridge to measure the DC resistance of the motor, and compare the records over the years (pay attention to the conversion to the same temperature). The difference between them is the poor contact.
4. Hammer check: tap the connection point with a small hammer and listen for abnormal noise
5. Feeler gauge inspection: measure the tightness of the two joint surfaces, if there is a gap, the contact is bad.
