1. Check the safety switch:
Mixer is driven by hydraulic transmission system, the most prone to failure in the hydraulic oil cooling system is the safety switch, so after the failure, it is best to check the safety switch at the first time.
2. Check the drive fan:
The motor is the most critical component in the whole heat dissipation system. The good or bad heat dissipation effect is directly related to the speed of the motor and the stable running state. It is directly powered by the electric control box connected to the vehicle battery, and uses the electric power to drive the motor to run at high speed to take away the amount of heat from the heat exchanger and cool the hydraulic oil.
3. Check the heat exchanger:
Mixer truck uses hydraulic oil radiator to cool down. The heat exchanger is equipped with a motor-driven fan to dissipate heat, so that the hydraulic oil can work normally. The mechanical pointer on the top detects the negative pressure in the pipeline. If the reading indicates that the hydraulic oil filter may be blocked, just pull out the rubber pointer to zero at the beginning. If there is still a reading behind and the problem can not be solved after pulling out the rubber plug, The hydraulic oil filter element needs to be replaced.
4. Check the thermal sensor:
The temperature sensor is located on the oil inlet pipe of the heat exchanger. Its function is to detect the temperature of the hydraulic oil. After the heat dissipation system of the mixer fails, if it is confirmed that it is not the insurance problem, check the temperature sensor.
5. Check the radiator control box:
The cooling control box monitors and receives the signal from the temperature sensor. When the temperature data exceeds the set value, the circuit of the cooling fan is automatically connected to let the air flow and reduce the temperature of the hydraulic oil. Therefore, after the cooling control box is damaged, the cooling system can not work normally and needs to be replaced in time. Generally, the radiator control box is not easy to be damaged.
In summer, we should pay attention to the heat dissipation system of concrete mixer. Once the vehicle fails and the discharge is delayed, the concrete is likely to solidify inside the tank, which is troublesome.