The chiller can be divided into low temperature chiller and normal temperature chiller according to the temperature in daily life. But all mechanical instruments and equipment are not always recyclable. If the chiller fails, will you eliminate the cause and solve it? Let's explain it below. The following is a detailed introduction of the reasons for the failure of the chiller and the measures to be taken, as well as related knowledge on the correct operation of the chiller. I hope it can be helpful to everyone.

I. Causes and solutions of chiller failure

1. The cooling water temperature is too high, and the condensation effect is poor. The rated working condition of the cooling water required by the chiller is 30 ~ 35 ° C. High water temperature and poor heat dissipation will inevitably lead to high condensation pressure. This phenomenon often occurs in high temperature seasons. The reason for the high water temperature may be: cooling tower failure, such as the fan is not turned on or even reversed, the water distributor does not turn, the cooling water temperature is high and rising rapidly; the outside temperature is high, the water path is short, and the amount of water that can be recycled In this case, the temperature of the cooling water is generally maintained at a relatively high level, which can be solved by increasing the storage tank.

 

2. The cooling water flow is insufficient to reach the rated water flow. The main performance is that the pressure difference between the inlet and outlet of the unit becomes smaller (compared to the pressure difference at the beginning of the system operation), and the temperature difference becomes larger. The cause of insufficient water flow is the lack of water or air in the system. The solution is to install an exhaust valve at a high place in the pipeline for exhausting; the pipeline filter is blocked or selected too thin, and the water permeability is limited. You should choose a suitable filter and Clean the filter regularly; the pump selection is small and does not match the system.

 

3. The condenser is fouled or blocked. The condensed water is generally tap water. It is easy to scale at temperatures above 30 ° C. Because the cooling tower is open and directly exposed to the air, dust and foreign matter can easily enter the cooling water system, causing the condenser to be dirty and the heat exchange area small. , Low efficiency, but also affect water flow. The performance is that the pressure difference and temperature difference between the inlet and outlet water of the unit become larger, the temperature above and below the condenser is very high, and the copper tube from the condenser is hot. The unit should be backwashed regularly and chemically cleaned and descaled if necessary.

 

Second, the correct operation of the chiller

In fact, there are many types of chiller sold in the market, which can be classified according to different forms. If divided by compressor, there are three main types of chiller, namely centrifugal chiller, piston chiller, and screw type. Chiller. If it is classified according to the type of fuel, it can be divided into two types: fuel type and gas type. According to the sealing method, it can be divided into open type chiller, semi-closed chiller and fully closed chiller. So what should be paid attention to in the actual operation of the chiller? Next, let Xiao Er's editor take you to interpret the correct operation of the chiller:

 

1.Check security settings

 

When using chiller equipment in the industrial field, in order to ensure the safety during use, there are many places that need attention. To avoid operating errors, you need to check whether the device of the machine is safe before the start of each operation. The so-called safety device mainly refers to whether the safety lever is reliable and whether the safety door is in the normal range of use.

 

2. Pay attention to the safety of your hands

 

It is worth noting that during the internal operation of the machine, it must be remembered that you must not reach into the clamping mechanism. When taking the product, for safety, the safety door must be opened first, and the safety door can only be closed after ensuring that all conditions are normal. If the inspection is not carried out carefully, a personal safety accident will occur, and if there is a foreign object in the mold, The operation of the chiller cannot be performed well.

 

In addition to the above, it is also necessary to pay attention to the fact that during the operation of the machine, the hand cannot reach between the mold and the nozzle gate, because the machine is still running, and the high-speed motor is extremely sharp. Will hurt everyone. At the same time, when repairing the mold, remember to turn off the oil pump motor first.

 

The above is the relevant content organized by Xiaobian about the causes and solutions of the chiller failure and the precautions for operation. I hope it can be helpful to everyone. Interested friends can bookmark it