If the recirculating chiller suddenly does not cool or the cooling speed is slow, which makes the experiment unable to continue, and then affects our work progress, we need to do the following checks.
First, check whether there is dust on the surface of the compressor. After the dust is adsorbed on the surface of the compressor, the refrigeration speed of the recirculating chiller will be slow.
Under the cooling state of the recirculating chiller, there should be a sound of liquid flow in the refrigeration pipe. Note that this sound is very weak. If there is a sound of flow, it means that the compressor is not short of refrigerant. If there is no flowing sound, the compressor may have no refrigerant.
When the recirculating chiller is in the refrigeration state, touch the compressor or the position close to the compressor with your hand at this time, and there should be shaking. If there is a compressor power supply, it is normal. Otherwise, check the compressor power supply and control line.
