Why Chiller Low Pressure Alarm
Exhibitor: SHENZHEN ANGES MACHINERY CO., LTD
Date: 2023-07-27
Booth No.: B204
1. Cooling system leak
There are leaks in the connecting pipes of the cooling system,such as welding point leakage, corrosion leakage, fracture caused by mechanical vibration,and human factors, etc. These will leads to malfunction of low pressure.
Solution
First of all, use leakage detection liquid (soap water, or detergent mixed with water) or halogen leak detector to find the leakage point, repair it.
2. Cooling system blockage
A. Blockage by impurities
If the filter is blocked due to impurities, it will only cause the cooling capacity drop slightly, you may not even feel any affected.When the filter is slightly clogged, there will be a temperature difference of the inlet and outlet of the filter, which can be felt by holding the inlet and outlet with your hand.When it is block seriously, the filter will dew or frost. If there is dew or frost (except the dew after the chiller stop running under normal operation), it can be judged that the filter is block.
Solution
Change a new filter.
B. Ice Blockage
The water in the system runs with the refrigerant to the throttle valve (expansion valve). After throttling expansion, freeze at throttle outlet, thus blocking the throttle valve (expansion valve) and lead to a low-pressure fault.
Solution
Change a new filter.
C. Expansion valve damaged
Expansion valve is affected by environment in the process of using. There is corrosive gases that will corrode the liquid in some environments,which will corrode the expansion valve.
Solution
Replace new expansion valve.
3. Heating exchange of evaporator is seriously in sufficient.
A. Insufficient water flow in the evaporator
B. Evaporator is blocked by bad something
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