In winter, after the dump truck was parked outdoors for a long time, you can find that a layer of frost had formed on the windows of the vehicle, which would have a great impact on the view when driving. The temperature in the driver's cab and outside the car is different. When the dump truck is stopped, the temperature in the driver's cab will continue to grow because of the previous air conditioning and higher than the outside. What's more, the temperature at night is relatively low, the colder outdoor air will contact the warm window glass, which will cause condensation, and frost will form at low temperatures.
Therefore, when the dump truck needs to turn off, and you want to turn off the air conditioner, you should turn the air duct of the air conditioner into an external circulation in advance. You can also add an external cycle to run the air conditioning of the dump truck for a period of time.
If the window glass of the dump truck is completely frosted, don't use hot water to wash and melt the frost, even if the window glass is made from a heat-resisting material, under the impact of hot and cold stimulation, the window glass of the vehicle can also be burst. This will not only cause rupture and damage to the wiper but may also burn out the motor of the wiper attached to the dump truck. If the temperature on the glass is relatively low, the water pump on the glass may be burned out. The correct way to deal with this situation is to start the dump truck first, and then wait for the temperature of the vehicle's engine to gradually rise, then turn on the air conditioner and blow to the window glass to increase its temperature. You can also buy glass water that can be used at low temperatures.
