Causes of compressor overheating during use of chiller
A thermistor is embedded in the compressor motor winding of the refrigerator, and the resistance is usually 1kΩ. When the winding is overheated, the resistance value will increase rapidly. When it exceeds 141kΩ, the thermal maintenance module SSM will act to block the operation of the unit, and the overheating fault will appear together, and the TH fault indicator will be on.
What are the reasons for the overheating of the compressor during the use of the chiller? Xingde Machinery reminds you that the reasons for the overheating of the compressor during the use of the chiller are as follows:
First, the compressor of the low-temperature chiller is overloaded and runs over current. The possible factors are: the cooling water temperature is too high, the refrigerant is charged too much, or there is non-condensed gas such as air in the refrigeration system, which causes the compressor to be overloaded, manifested as overcurrent, and accompanied by high pressure problems.
Second, the electrical fault causes the compressor of the refrigerator to operate over current. If the three-phase power supply voltage is too low or the three-phase is unbalanced, the current or one phase current is too large; the communication contactor is damaged, the contact is ablated, and the contact current is too large or the current is too large due to lack of phase.
Third, the overheating maintenance module SSM of the chiller is damp or damaged, the central relay is damaged, and the contacts are bad. The performance is overheating when the machine is turned on, and the compressor cannot be started. If the electronic board of the unit is faulty or the communication is faulty, the overheating fault may be falsely reported.
Knowing the above reasons, the customer can deal with it according to the actual situation when using it.
