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operating table troubleshooting

1. Electric operating table has action in one direction and no action in the other.
One-sided no-action fault is usually caused by electromagnetic reversing valve. The breakdown of solenoid reversing valve may be caused by the breakdown of control circuit or mechanical jam of reversing valve. The specific inspection method is whether there is a voltage in the first variable reversing valve. If there is voltage, remove and clean the reversing valve. Because of long-term use, if there is a little impurity on the movable axle of the interrogation valve, the axle will be brushed and stuck, resulting in only one direction of the operating table.
2. There is no forward tilt motion of the electric operating table.
If only forward tilt action is not, other actions have, that means that the compressor pump works normally, but the corresponding contact switch fault or the corresponding solenoid valve fault. There are two ways to judge whether the solenoid valve is good or bad. One is to measure resistance with a three-purpose meter, the other is to put metal on it to see if there is suction. Of course, if the solenoid valve suction action is normal. These problems can also occur in oil blockages.
If there is not only no forward tilt action, but also no other action, it is the failure of the compression pump. First, check the voltage on the compression pump. Is the resistance of the compression pump normal with a three-purpose meter? If all the above are normal, the commutation capacitor will fail.
3. When operating table is used, it is found that it will drop automatically, with faster speed and vibration sound.
This fault is caused by the problem of the inner wall of the lifting tubing. Long-term up and down movements, if there is a small impurity on the leather bowl. Sometimes the inner wall of the tubing will be pulled out of scratches. Over time, the deeper the scratches, the above-mentioned failure will occur. The solution is to replace the lift tubing.
4. It is found that the operating table will drop automatically, but the speed is very slow.
This kind of situation occurs more in the mechanical operating table, mainly the lifting pump failure. After several years of operation, very small impurities may remain at the inlet valve opening, resulting in minor internal leakage. The solution is to remove the lift pump and clean it with gasoline, especially check the oil inlet valve. After washing, add clean oil again.
5. The back plate will drop automatically during the operation, but the speed is very slow.
This kind of fault is mainly caused by the leakage of solenoid valve, which usually occurs in the electric operating table. Sometimes impurities will gather at the solenoid valve mouth during long-term use. The solution is to disassemble the solenoid valve and clean it with gasoline. It should be noted that because of the high pressure of the back plate, the general electric operating table is designed with two electromagnetic valves in series. When cleaning, two valves should be cleaned together.