What should I do if I get an electric shock while using a stage electric hoist?

　　The use of stage electric hoists often involves contact with electrical circuits, which may result in electric shock accidents. So what should we do at this time?

　　Firstly, if the operator is electrocuted, the people next to them should remain calm and not lose their rationality and panic.

　　Secondly, it is necessary to quickly disconnect the power supply. Never use your hands to hold the person who has been electrocuted, as it is very dangerous to be charged at this time. In addition, it is necessary to use dry, non-conductive wooden sticks or other materials to disconnect the wires, and the rescuer should find a way to keep them insulated from the ground.

　　Thirdly, by calling the emergency hotline, professional medical personnel can provide rescue to the injured. Be sure to clearly state the location of the electric shock so that the ambulance can arrive quickly.

　　Fourthly, while waiting for an ambulance, one should not sit idly by and use their first aid knowledge for rescue. Because implementing first aid within 2 minutes of electric shock has the highest chance of success. Firstly, evacuate the surrounding people as soon as possible and undress the person who has been electrocuted. If the electric shock victim still has mild perceptual injuries, they should wait quietly for the ambulance to arrive. If you have lost consciousness, have difficulty breathing and keep convulsing, artificial respiration and cardiac compression should be performed. If both breathing and heartbeat have stopped, artificial respiration and chest compressions should be used.

　　Only when the rescuer maintains a clear mind can it be more beneficial for the safety of the electrocuted person and oneself, so the prerequisite for rescue is to remain calm! In addition, pay attention to electrical safety when using stage electric hoists.

　　Different noises and malfunctions of stage electric hoists

　　Due to the fact that stage electric hoists are powered by electricity, malfunctions of stage electric hoists are often accompanied by various abnormal sounds. The stage electric hoist belongs exclusively to the stage, and abnormal sounds can affect the sound effect of the stage. In order to maintain a good stage effect, any abnormal sounds should be resolved as soon as possible. It is amazing that skilled technicians can roughly understand the cause of a malfunction by identifying the location, height, and tone of the noise.

　　Firstly, the noise comes from the control circuit and is accompanied by a humming sound. So the reason may be that the contactor has malfunctioned. So, when this situation occurs, it is necessary to check whether there are problems such as poor contact of the AC contactor contacts and inconsistent voltage levels.

　　Secondly, the noise comes from the motor, which may result in the following three situations.

　　1. The entire motor emits a regular buzzing sound that varies in intensity. This situation may be due to the single-phase operation of the motor.

　　2. There is a buzzing sound of "clack clack clack" coming from the vicinity of the bearing. This situation may be due to damaged bearings.

　　3. The entire motor emits a high pitched 'buzzing' sound, accompanied by a sharp and piercing sound. This situation may be due to the misalignment of the coupling axis or slight sweeping of the bore by the motor.

　　Thirdly, the noise comes from the reducer and is accompanied by a loud buzzing sound. This situation may be due to the gearbox not having added or replaced lubricating oil before or during use.

　　If your stage electric hoist has the above condition, you can refer to it and repair it. In the process of maintenance, it is important to accumulate experience and explore methods. The next time a problem occurs, you may know where the problem lies by listening to the location and tone.