ND-600B double probe needle detector machine failure reason

The dirt on the conveyor belt of the ND-600B double-probe needle detector causes the machine to malfunction. The indicator light on the probe is blinking continuously, or the conveyor belt runs to a specific position and the alarm is reversed, or a piece of clothing without any metal will be found. When passing, sometimes it is impossible to pass the fault manifestation such as the needle detector channel. The conveyor belt is thoroughly cleaned every week. The surface of the conveyor belt should be cleaned regularly because it is often placed in the product or if it is left with a lot of dust. The back side of the conveyor belt also needs to be cleaned, because during the use, the surface of the equipment may be attached with dirt containing traces of iron powder, which will deposit for a long time, even if the needle detector does not break the needle during the test, it will be on the conveyor belt. The dirt reacts and causes the machine to malfunction. Wipe the upper and the back of the belt with a clean towel during handling until the probe indicator no longer flashes after the machine is turned on.
The noise inside the needle detector comes from the sound of the needle detector itself or the vibration generated by the machine. First, fix the mechanical bottom anchor bolts so that the rollers leave the ground. If the ground bearing capacity is weak, mechanical vibration will occur, resulting in malfunction. A 20 cm square plate can be placed under the bottom bolt to reduce mechanical vibration. In addition, check whether the fixing screws of the parts of the needle detector are loose, and the vibration caused by the looseness of the screw is transmitted to the needle detector.