Common failure phenomena and maintenance methods of desktop centrifuges
However, where there are equipment machines, there will be some faults, and some are common faults. Users should pay more attention to them, and remember these faults. In the process of running the machine, you can make the best. Judged. In the faults that often occur in desktop centrifuges, it is necessary to pay attention to the phenomenon. It is necessary to analyze the causes and then apply the inspection methods, so that the faults in use can be eliminated in time.
Now let's talk about a centrifuge failure phenomenon: after the centrifuge is turned on, when the rotor speeds up, when the speed reaches about 830r/min, the rotor has an alarm light, it will flash, and the rotor will stop increasing speed. , entered the state of free decay.
Detailed fault analysis:
The main reason for this failure phenomenon is seen in the rotor speed detecting circuit. For example, the sensor of the rotor pulse generator RBG is broken. There is also a deterioration in characteristics and a decrease in transistor aging and current amplification factor, or a resistance variable, which can cause such failure.
Maintenance method:
To check the RPGA point pulse signal about 3Vp-p, a pulse width changes as the speed increases. This is to say that the RPG sensor is working properly, the transistor Q4 set click and the Z32 input are both 2.8Vp-p pulse signals. The output of Z32 is a positive and negative 5V DC level. This is normally a 5Vp-p pulse signal. This is because when the threshold voltage of Z32 is about 3V, the input 2.8Vp-p pulse can not turn the inverter on. At this time, the detection state of the processing is wrong, and the rotor will have an alarm light.
Then check the Q4 collector current is lower than the normal value. If the Q4 aging is not serious, you can increase the output voltage of Q4. It is to reduce the collector resistance R31, so that the collector current is increased, the Q4 can be saturated, and the collector output is about 5Vp-p pulse information, and the machine resumes normal operation.
Some common faults are handled in a timely manner so that they can be used more smoothly. And in daily maintenance, it is necessary to check each zero device. Whether the centrifuge works normally or not is related to proper use. Generally, it must be used according to the specifications during operation. The maintenance of the centrifuge is also an analysis of the fault, and it is not uncommon to judge the phenomenon of the machine. Usually it is necessary to carry out maintenance from simple, and to consider complex, because some faults are caused by mistakes, so there are standardized inspections and inspections. In the routine maintenance of the centrifuge, it is necessary to analyze the cause of the failure, and then proceed to repair. The problem of the fault is clearly understood and can be repaired well before the centrifuge can be used correctly.
Patio dining chair set featuring full-scale comfort, you can stack and store, you can set up instantly for guests. The sturdy chairs are woven with all-weather PE rattan fibers that is hand weaving one by one, very beautiful, and stack for convenient storage.
Patio dining chair set has many options: armchair and armless chair, you can decorate different round, square or rectangle dining table. You can be free collocation by yourself.
About us:
1.our factory is more than 20000 square meter big.
2. Our showroom is about 800 square meters.
3. we have professional sale team and more than 200 workers.
4. The capacity of our factory is 60 containers/month.
5. we attended CIFF furniture fair and canton fair.
Welcome your inquiry for further discussion.
Dining Patio Chair Set,Rattan Dining Chair Set,Wicker Dining Chair Set,Outdoor Dining Chair Set
Golden Eagle Outdoor Furniture Co., LTD. , https://www.geoutdoor.com