H.Stars (Guangzhou) Refrigerating Equipment Group Ltd.

  The high-pressure failure of the chiller means that the compressor discharge pressure is too high, which causes the high-pressure protection relay to operate. The compressor discharge pressure reflects the condensing pressure, the normal value should be 1.4~1.8MPa, and the protection value setting is recommended not to exceed 2.0MPa. Because the long-term pressure is too high, it will cause the compressor to run too much current, easily burn the motor, and cause damage to the compressor. So what is the main cause of high pressure failure? How to solve it? 1. Excessive refrigerant charge. This situation generally occurs after maintenance, and it is manifested as high suction and discharge pressure and balance pressure, and the compressor operating current is also high. Solution: The refrigerant should be discharged according to the suction and discharge pressure and the balance pressure and the operating current under the rated conditions until it is normal. 2. The cooling water t...

  Spot welding machine is a kind of mechanical equipment. It adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes, and the welding current changes from one When the electrode flows through the other electrode, the two contact resistance points form an instant thermal fusion, and the welding current flows from the other electrode to the electrode along the two workpieces to form a loop instantly, and will not damage the internal structure of the welded workpiece. Because the resistance welding machine is in the working process, the resistance head is prone to high temperature, which affects the accuracy of the processed product, so a chiller is needed to cool it next to ensure the accuracy of the processed product. The spot welding machine is equipped with a chiller, which can improve the safety and stabili...

  As we all know, the application of   industrial chillers   is very wide, of which chillers are the most widely used in the plastics industry. So, why does the plastics industry need to use water chillers, and where do they need to use water chillers in the plastics industry? We know that a chiller is a kind of refrigeration equipment that cools water and recycles it. In plastic production, the high temperature easily affects the molding of plastic products. The chiller can be used to cool down injection molds and improve the quality of plastic products. So which plastic machinery needs to use a chiller? Below, Omar Refrigeration will take you to understand the application of chillers in the plastics industry. Injection molding machine: In the injection molding process of plastic products (televisions, computers, washing machines, mobile phones, refrigerators, air conditioners, plastic toys, automotive plastic parts, etc.), whether the product can be cooled (cooling down...

  According to the news on December 23, Chemours announced that from January 1, 2020, they will stop supplying high-GWP R404A and R507A refrigerants to the European Union. ​ At the time of this announcement, Europe is preparing to implement a ban on high-GWP refrigerants in accordance with the European F-gas regulations (517/2014) implemented on January 1. According to the European F-gas phase-out schedule, HFC refrigerants with a GWP value higher than 2500 will be prohibited from being used for maintenance or recharging of refrigeration or refrigeration systems with a charge of 40 tons or more of carbon dioxide equivalent. This is equivalent to about 10.2kg of R404A, which is a commonly used refrigerant in medium-sized systems. Small sealing systems are not affected by the ban, but most manufacturers of such systems have switched to lower GWP refrigerants. In addition to the commonly used R404A, the ban will also include R507A and R22 instead of gas R422D, both of which have a GWP...