What you need to know about Copeland compressors 1. What are the effects of Copeland compressor reversal? 1. The operation of Copeland Scroll compressor is directional. It can only rotate in one direction for compression. The specific direction of rotation depends on the phase force. If the scroll compressor rotates in reverse, it will cause insufficient lubrication of the system and cause scroll wear or damage to the scroll components. So what is the reaction of the reverse rotation of the scroll machine? a, Copeland scroll compressor reverse discharge and suction pressure will not change; b. No noise will be generated when reversing; the sound made when the machine is turned off is a sound problem, it will not cause damage to the compressor; c. The current will decrease when the Copeland scroll compressor reverses;
2. How to achieve effective oil level control for multiple scroll compressors? 1. If there are multiple Copeland compressors on the compressor frame, the oil separator and oil distribution system must be used, which is similar to the semi-closed frame; 2. Unlike the semi-hermetic compressor, the scroll machine does not have a positive displacement oil pump, so there is no way to measure the pressure of the oil pump; therefore, in order to prevent the Copeland scroll compressor from running out of oil, a floating type system must be used to detect the scroll The oil level in the compressor pump. If the oil level drops below the preset value, oil must be supplied from the oil tank to the compressor. 3. What is the difference between R22 refrigerant and R410A Copeland compressor? 1. The engine oil is different: the mineral oil of the R22 refrigeration compressor we usually use cannot be mixed with H410 refrigerants such as R410A, etc. Copeland R410A scroll compressors generally use polyol ester synthetic oil, commonly known as POE; 2. The displacements of the two scroll compressors are different: the heat transfer performance ratio of R410A and R22 is the same as the ratio of R22 and R12. Therefore, under certain motor power conditions, the Copeland Scroll compressor must be reduced by 40%. If the R22 compressor is used to supply air to the R410A, it will cause an overload situation, thereby promoting the start of the motor protection device; 3. The cracking pressure requirements of the casing are different: at a certain saturation temperature, the pressure generated by R410A is about 60% higher than that of R22, so the bursting pressure of the two casings is also very different.
