How to deal with high water temperature of small excavator

[BONOVO]

The problem of too high water temperature is generally very common in summer, but sometimes it also occurs in winter. If this problem occurs, it means that the small excavator has a fault. So how to solve this kind of problem?
First, let's analyze the causes of small excavator failures

1. When the temperature is too high and the air conditioner is turned on, the idle speed is unstable, the speed fluctuates too much, the rapid acceleration is weak, and the engine has abnormal noise.

When repairing a small excavator, check the temperature difference between the upper and lower water pipes of the water tank. If the temperature difference is too large, it is necessary to check the opening of the thermostat and whether the water pump has a speed loss fault. The temperature difference between the upper and lower water pipes of the water tank cannot be too large.

2. After the hot car is turned off for more than ten minutes, it is not easy to start the car when starting; sometimes the hot car will automatically turn off when driving.

Solution: After the hot car is hot, check the return water of the return pipe at the upper end of the antifreeze storage tank. If the return water is not smooth or blocked, the water temperature will be too high.

Warm reminder: Do not blindly disassemble and replace parts when repairing a small excavator.

3. The air conditioning refrigeration temperature is very cold when the car is cold, and the air conditioning refrigeration effect is not obvious when the car is hot; and there is a large resonant humming sound in the air conditioning system.

When repairing a small excavator, due to the irregular addition and replacement of antifreeze, the engine water channel and water tank will be blocked in advance, resulting in high water temperature. Antifreeze should be replaced every two years, and original accessories must be used when replacing and adding.

4. When the small excavator is idling, the engine water temperature gauge shows too high, the electronic fan works for too long in high gear, the engine noise increases, and the fault is most obvious when the temperature is too high and the air conditioner is turned on.

When repairing a small excavator: Check whether there is too much dust between the condenser and the water tank, and clean it thoroughly with high-pressure gas to ensure that the water tank and condenser have good heat dissipation performance. Usually pay attention to wipe the dust between the condenser and the water tank.

5. When idling at a hot car, the air conditioning compressor clutch is frequently sucked off or even disconnected, causing the hot car air conditioner to not cool.

The high pressure at the high end of the air conditioning system in the small excavator repair is too high; the air conditioning refrigerant or air conditioning refrigeration lubricant is filled too much; the self-adjusting function of the internal self-adjusting air conditioning compressor fails, causing the high pressure to be too high; and the air conditioning condenser is blocked. The above faults will increase the load on the engine, consume the heat dissipation performance of the cooling system, and lead to the occurrence of excessive water temperature faults. Warm reminder: Too little or too much air conditioning refrigerant will reduce the cooling effect.

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