How to deal with the problem of non-circulation of cold water in the chiller

How to deal with the problem of non-circulation of cold water in the chiller

Generally speaking, a small industrial chiller already contains a cold water circulating pump, and a chiller (large) does not contain a cold water circulating pump. At this time, when assembling the cold water system, an external cold water circulating pump needs to be installed so that the cold water is absorbed. After the heat of the cooled equipment is returned to the chiller for cooling and cooling, even if the cold water is supplied back to the pipeline to form a circulating system.

　　 It should be noted that whether the cold water pump is built-in or external, it is recommended that the location of the cold water pump be lower than the water level of the cold water storage bucket (pool). In this way, the circulating water pump can suck cold water well. However, in some cases, the cold water storage bucket (pool) may be higher than the water level of the storage (pool) due to the needs or restrictions of the installation environment. The chiller system often fails to absorb water during operation, causing the chiller to experience insufficient chilled water flow. The chiller manufacturer can check the cause in the fault display on the chiller control operation panel. The solution steps at this time are:

1. Use a hose from the cold water storage bucket (pool) back to the small replenishing pipe reserved on the large pipe on the cold water circulating pump to fill in (open its small valve), and use a wrench to unscrew the small exhaust plug of the cold water circulating pump ( If there is water, then tighten) until the water returns to the large pipe of the cold water storage bucket (pool), and pull out the hose to see if there are any bubbles. If there is, please continue to fill the water until there are no more bubbles. Close the small valve;

　　2. Turn on the chiller at this time for 1~3 minutes. If there is a large amount of water in the main tube back into the pool, there is no problem;

　　 3. If the water return is not enough or there is no water return, repeat the above-mentioned irrigation action.