The upper electrical system of the concrete mixer consists of three parts: the electric control device of the water supply system (the electric water pump control part, the electric control alarm device of the pneumatic water supply system), the cooling fan control part, and the rear clearance lamp, side marker lamp, and work lamp part. The following section explains it for you.
1) Electric control device of water supply system
① Electric water pump control part: the electric water pump operating switch is located on the right switch box at the rear of the vehicle. Before the electric water pump works, ensure that the engine is running, there is water in the water tank, and the water pipe valve is open. When the water in the water tank is used up, the water pump shall be shut down. It is strictly prohibited to idle the electric water pump without water to avoid damage to the electric water pump. When the electric water pump is working, the buzzer in the switch box sounds to warn.
② Electric control alarm device of pneumatic water supply system: turn on the raw water pump switch in the cab, the buzzer controller relay of the pneumatic water supply system is powered on, the buzzer buzzes, and the solenoid valve is connected at the same time. The air source enters the water spray pressure tank from the air reservoir through the solenoid valve. Turn on the water spray valve for water spray washing. After the water spray washing, the buzzer still buzzes, reminding the operator to turn off the water pump switch.
2) Cooling fan control part
The start and stop of the cooling fan is automatically controlled by the temperature control switch. The fan starts when the temperature is higher than 65 ℃ and stops when the temperature is lower than 60 ℃. The temperature control switch is located on the cooler, and the relay and fuse are located in the central power distribution box in the cab.
3) The rear clearance lamp, side marker lamp, work lamp and some rear clearance lamps and side marker lamps of the concrete mixer are used to indicate the size and side contour of the rear of the vehicle at night, and are turned on and off at the same time as the rear license plate lamp. The working light is used for the lighting of feeding and discharging at night, and the switch is in the cab.
This is all about the "three major" components of the electrical system installed on the mixer truck. If you have any doubts or needs, please come to our website Consult!