csr
csr
run, start, and common.
The three letters on a compressor terminal block typically represent the electrical connections for the compressor motor: "C" for Common, "R" for Run, and "S" for Start. The Common terminal is the main power input, the Run terminal is connected to the motor windings for continuous operation, and the Start terminal is used for initiating the motor's operation. These connections are crucial for the proper functioning of the compressor in HVAC systems.
The three block letters on a compressor typically refer to "CFC," "HCFC," or "HFC," which indicate the type of refrigerant used. CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons) are being phased out due to their ozone-depleting properties, while HFCs (hydrofluorocarbons) are more environmentally friendly but still have global warming potential. Understanding these letters is crucial for proper refrigeration management and compliance with environmental regulations.
Common Start Run
C = Common S = Start R = Run
woodcut, old master print, block letters
The three letters commonly found on compressor terminal blocks are "R," "S," and "T." These letters represent the different phases in a three-phase motor system, with "R" indicating the first phase, "S" the second phase, and "T" the third phase. In single-phase applications, you might see terminals labeled as "L" for line and "N" for neutral instead. Proper connection to these terminals is essential for the correct operation of the compressor.
C = Common S = Start R = Run
Block letters are the same as CAPITAL letters.
They must be at least three inch block letters
Different motor windings in the compressor: Common, Start, Run