What is the reason why the circulating cooler cannot cool down?

What is the reason why the circulating cooler cannot cool down?

As far as the cold water chiller plant is concerned, all LX -25°C ~ +30°C Chillers de recirculação shall undergo 100% performance test before delivery to ensure normal operation of the unit. If this problem occurs in the first use, it may be the wrong type of chiller.

Another reason why the temperature of the chiller cannot be lowered after initial use is that there is a small problem in the installation between the chiller and the cooling tower, circulating water pump and pipes, which needs to be carefully checked according to the installation diagram.

1. Why is the cooling effect of the circulating cooler poor?

① The cooler is blocked inside or has more dirt on the surface, which causes the cooler safety device to open, the cooler overflow to reduce, the heat dissipation flow to reduce, or the cooler is poorly ventilated, which reduces the cooling heat transfer coefficient and cooling effect of the cooler.

Therefore, the cooler must be checked regularly during use to dredge the cooler, and the dirt on the surface of the cooler must be removed regularly to ensure that the inside of the cooler is smooth and the outside is clean, so as to ensure the cooling effect of the cooler.

② The opening pressure of the cooler safety valve or check valve is lower than the standard value, so that the cooler safety protection device can be opened when the cooler is not blocked, which will generate overflow diversion and reduce the heat dissipation flow of the cooler.

Therefore, the opening pressure of the safety protection device must be adjusted correctly before the cooler is used, and the opening pressure value of the safety protection device must be checked and corrected regularly during use.

2. What is the reason why the power switch indicator of the circulating cooler does not light up and the water pump does not rotate?

Causes and solutions:

The air switch (circuit master switch) above the power supply access end is in the “OFF” state.

Turn the air switch to “ON” to solve the problem.

3. The water level alarm indication of the circulating cooler flashes. What is the reason for the buzzer alarm?

Causes and solutions:

① The water tank is short of water and the water level is too low. Fill up the water level switch;

② The liquid level switch is short circuited or damaged. Replace the level switch.