During the maintenance process of the excavator, the heat dissipation of the engine and air conditioning system is poor, resulting in the water temperature being too high, which will cause the following malfunctions:
1. is idling, the engine water temperature gauge shows too high a temperature and the electronic fan. If the high-speed gear runs for too long, the motor noise will increase and the fault will be more obvious when the air conditioner is turned on when the temperature is too high.
When maintaining the excavator: check whether there is too much dust between the condenser and the water tank, and clean it carefully with high pressure air to ensure that the water tank and condenser have good heat dissipation performance. Pay attention to wiping off the dust between the condenser and the water tank at ordinary times.
2. When the air conditioner is turned onWhen the temperature is too high, the idle speed will be unstable and the speed will increase. fluctuates too much, and the sudden acceleration will be weak and the engine will make abnormal noise.
When maintaining the excavator, check the temperature difference between the upper and lower water pipes of the water tank. If the temperature difference is too great, check the thermostat and water pump for openings. is a loss of speed.
The temperature difference between the upper and lower water pipes of the water tank should not be too large.
3. After a hot car is off for more than ten minutes, it is not easy to start the car when starting; When the hot car is driven, it sometimes turns off automatically.
Solution: After warming up the car, check the water return condition of the water return pipe at the upper end of the tankAntifreeze water storage box. If the water return is not flowing or blocked, the water temperature will increase. be too high.
4. The air conditioning cooling temperature is very cold when the car is cold, but the air conditioning cooling effect is not obvious when the car is hot, and there is a loud resonant hum; the air conditioning system.
Due to the irregular addition and replacement of antifreeze during excavator maintenance, the engine water channel and water tank will be blocked in advance and the water temperature will be high. Antifreeze should be replaced every two years, and original accessories should be used when replacing and adding.
5. When the car is idling during hot car, the air conditioning compressor clutch is frequently disconnected or even disconnected, causing the air conditioner to not cool during hot car. The high pressure end of the excavator service air conditioning system is too high; the air conditioning refrigerant or air conditioning refrigeration lubricating oil is overfilled; the self-adjusting function of the internal self-adjusting air conditioning compressor fails; , resulting in excessive high pressure water
High pressure water draft
About 70% of Shanghai's disposed waste is in the base of solid waste from Shanghai Laogang. But the rate at which the base processes waste is far from keeping up with the rate of waste production. Therefore, regarding waste disposal at the end of the year, it is reported that the Laogang Wet Waste Phase I project, a major project in Shanghai and the largest wet waste resource processing project in Shanghai, will be put into service at the end. of next year.
Processing composting
Stack the dechousehold hets in piles, keep them at 55 ~ 70°C for storage and fermentation, and use the decomposition ability of microorganisms in the waste to decompose organic matter into inorganic nutrients. After composting, household waste becomes hygienic and odorless humus. This not only solves the problem of waste disposal, but also achieves the purpose of recycling. However, domestic waste compost has low nutrient content and high impurity content. It can easily cause soil hardening and deterioration of groundwater quality. strictly carried out in the compost pre-treatment or post-treatment unit.
Research into comprehensive treatment technology is imperative. The main obstacles to waste recyclingOn the one hand, the composition of waste itself is complex and difficult to use as a resource.
DOn the other hand, research and development of related technologies has not kept pace. Existing utilization technologies often adopt a single mode (such as incineration to produce electricity) and use the same method to treat different wastes. components, resulting in a complicated processing process. It consumes a lot of itself and has low economic efficiency. Therefore, research on key technologies for comprehensive treatment based on local conditions and different compositions of waste is of great importance for fundamentally solving the waste problem and is a major event related to the national economy and means of livelihood of the population.
Reference for the above content: Baidu Encyclopedia - Household Waste
Guangzhou Fusen technical staff will answer for you: What are the technical requirements for roughness to water at hhigh pressure:
1. Operators: Each machine is equipped with 4 people, 1 captain and 3 operators;
2. Water Connection Requirements: Tap water source must be provided and tap flow rate; water should be ≥ the demand of the fluffing machine 2 times the water flow, so that the precision purification filtration system and hydraulic power device of the equipment can work normally, otherwise it will cause serious damage to equipment;
3. The captain or electrician on site will connect and pull the hair. The machine cables and power circuit breaker must fully meet the requirements of normal use of the equipment.
4. acceptance once a day.