Before starting the concrete mixer, in order to ensure its safe and efficient operation, there are several parts that must be carefully inspected. These parts include but are not limited to the following aspects.

Firstly, the power supply and electrical system are crucial. Mixers typically rely on a stable power supply, therefore, it is necessary to check that the power cord is intact and free from wear or exposed wires. In addition, electrical sockets and switches should also be in good condition to ensure stable current and not cause safety hazards such as fires.

Secondly, the integrity of mechanical components is crucial. The blades, bearings, and other key components of the mixer must be intact and without any signs of cracks or excessive wear. The blade should be sharp and firmly installed to ensure that the concrete can be evenly mixed. The lubrication of bearings should also be taken into consideration to avoid overheating or damage caused by excessive friction.

Once again, the effectiveness of safety devices cannot be ignored. Mixers are usually equipped with emergency stop buttons and protective covers to prevent operator injury in the event of accidents. Before starting, these safety devices should be tested to ensure they can respond quickly at critical moments.

Finally, the cleanliness of the mixer cannot be ignored. There should be no residue or dirt inside and outside the mixer to avoid affecting the quality of concrete and the performance of the mixer. Especially after continuous use, there may be hardened concrete blocks remaining inside the mixer, which must be thoroughly removed to ensure the smooth progress of the next mixing.

In summary, the inspection before starting the concrete mixer is an important step to ensure engineering quality and equipment safety. Through the above inspections, it can be ensured that the concrete mixer is in good working condition before starting, thereby avoiding equipment failures and safety accidents. These inspection measures not only help improve the service life and efficiency of the equipment, but also ensure the safety of operators. Therefore, before using the concrete mixer, it is essential to carefully follow these inspection steps to ensure the safety and normal operation of the equipment.