When the high and low temperature recirculation chiller system is in use, what is the general cause if the high temperature cannot be reduced? How should we deal with such failures?
First, let’s analyze the principle and method of cooling. The circulating heat transfer medium is different. Generally, the high and low temperature cooling system industry mostly uses direct cooling, while the high and low temperature recirculation chiller system mostly uses indirect cooling with internal installation. There are devices such as plate heat exchangers or oil coolers. The heat medium and cooling water source in the system exchange heat in the heat exchanger to reduce the temperature of the medium.
Generally, we conduct investigation and maintenance from the following aspects:
1. The cooling solenoid valve is damaged: it is necessary to check whether the solenoid valve coil can work normally, if it is damaged, it needs to be replaced; the panel does not output a cooling signal, carefully check the circuit or use the component replacement method to check.
2. Circuit failure: Check the circuit part of the system, the cooling water inlet or outlet pipeline is blocked: check whether the valve in the cooling water pipeline is fully opened, and ensure that the flow and pressure of the cooling water are sufficient, and the heating contactor is stuck, Always heating: observe the pull-in state of the contactor, and worsen damaged electrical parts.
In addition to troubleshooting the above several possible causes of failure, we also need to check whether the cooling plate is replaced or the cooling exchanger is blocked. The advantage of using indirect cooling is that it has high temperature control accuracy and strong adaptability. It can be applied to the temperature control of high and low temperature recirculation chiller systems, and because the heat transfer medium is cooled first, the cooling impact on the temperature control equipment is relatively relatively large. Of course, the disadvantage is that the cooling speed is relatively slow, and the price is more expensive than the direct cooling method.
If you can't solve it by yourself, you need to contact the manufacturer of the high and low temperature recirculation chiller system to solve it in time to avoid delays and increase costs.