It’s now the hot summer season, and temperatures are rising rapidly, especially in the southern, coastal, and central regions. While the diesel generators produce heat during their operation, the warmer weather leads to greater losses and damages. To avoid overheating of the coolant during summer, we need to pay attention to the following points while utilizing the generator.
Keep the exterior and interior of the cooling system clean
This is an important requirement for improving cooling efficiency. If the radiator is covered with mud, oil, or is deformed due to collision, it can block the passage of wind and significantly reduce the cooling effect of the engine, leading to high coolant temperature. As a result, the radiator should be cleaned or repaired promptly in these cases. Moreover, if the cooling system accumulates scale, mud, sand, or oil, it can also affect the coolant’s heat transfer, and poor quality coolants or water can cause further accumulation of scale, which can further decrease the cooling efficiency by blocking the heat transfer process. Therefore, high-quality coolant should always be used in the cooling system.
keep the amount of coolant sufficient
When the engine is cold, it’s important to maintain the coolant level between the highest and lowest marks in the expansion tank by ensuring that the amount of coolant is sufficient. If the coolant level is lower than the minimum level in the expansion tank, it should be refilled promptly. However, it’s worth noting that the coolant in the expansion tank should not be filled to the brim and should be left space to expand.
Correct use of closed cooling system
Modern car engines utilize a closed cooling system, which features a sealed radiator cap and an expansion tank. As the engine runs, the coolant vapor enters the expansion tank, where it cools down before flowing back to the radiator. This can effectively prevent significant evaporation losses of the coolant and improve the boiling point temperature of the coolant. To ensure optimal performance, the cooling system should use high-quality coolant with anti-corrosive, anti-boiling, anti-freezing and water-resistant properties. It’s also important to ensure that the system remains sealed during use to achieve the desired effect.
Keep the fan tape tension moderate
The fan belt is either too loose or too tight. If it’s too loose, the pump speed is reduced, which affects the circulation of coolant, and it will cause the belt to wear out quickly. On the other hand, if the fan belt is too tight, it will lead to excessive wear and tear of the water pump bearing. Also, it’s important to ensure that the fan belt is not contaminated with oil. Therefore, it’s essential to check and adjust the fan belt tension regularly. To do this, press on the middle of the belt with your thumb with a force of about 98N. If the deflection of the belt is about 10-15mm, then the tension is appropriate. If it’s not, adjust the tension by modifying the generator positioning bolt position. When a new fan belt is installed, the deflection should be about 8-10mm when tested for tension.