The emergence of centrifuges has brought biological science and technology to a new level. The equipment itself can separate the solid phase and the liquid phase in the colloidal solution, making it a necessary equipment in laboratories such as medicine, chemical and coal. Due to the high frequency of use of the centrifuge, the internal structure design is very complicated, and once the fault occurs, it will bring great trouble to the work. Therefore, as a user of the centrifuge, it is very necessary to master some techniques for solving the malfunction of the centrifuge, so that in the event of a failure during the experiment, the user can handle it himself and promote the experiment.
The panel of the centrifuge shows normal but the device is not working.
A lot of laboratory staff said that they connected the power of the equipment, the preset time and speed display on the panel are normal, press the start button and found that the centrifuge did not turn at all, but there is still speed on the digital tube. number. In response to this problem, the maintenance personnel of the centrifuge equipment manufacturer indicated that most of the carbon deposits on the equipment were caused by poor contact.
These experienced maintenance personnel said that they would have experienced this phenomenon when they repaired the machine several times. When they cut off the power supply and disassembled the centrifuge, they detected the brush lead and found that the pointer was not deflected, indicating that the brush has no current. Through further inspection, it appears that the brush is mostly worn, and the carbon on the rotor of the motor is too much. At this point, use a soft cloth and a cotton ball to remove and wipe off the carbon on the rotor and replace it with a new one. After the replacement is completed, the brush leads are connected again and the pointer is deflected, indicating that current has passed. Turn the power on again to restart the device, and the centrifuge will work properly.
The second common fault is that the centrifuge door cannot be opened.
Anyone who has used centrifuge equipment knows that since the speed of the centrifuge is basically above 15,000-25000 rpm during normal operation, unnecessary safety hazards are created if the necessary protection settings are lacking. Therefore, when designing the protection mechanism, the device can usually be started after the door cover is closed, and the door cover can be opened again after the machine is stopped. However, in practical applications, for some reasons, the door cover can not be opened. The cause of this failure is that the looseness of the screw from the door handle causes the connection at both ends of the handle to be disengaged, and the latch cannot be pulled out of the lock hole.
To solve such a problem, the operator must first turn off the power of the device, disassemble the panel of the device, and extend the hand to the approximate position of the door lock to pull the "L" type iron piece to open the door. If it still cannot be opened, then the hook can be selected. The wire is inserted into the rear end of the latch, and the latch is pulled to pull it out of the lock hole, and the door can be opened smoothly.
This article was edited by the laboratory instrument - Hunan Gilson Technology Development Co., Ltd.
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