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
csr
Common Start Run
C = Common S = Start R = Run
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.
run, start, and common.
csr
A hermetic compressor typically has three terminals: one for the start winding, one for the run winding, and one for the common connection. These terminals are used to connect the compressor to the power supply and control circuitry. In some cases, there may also be an additional terminal for grounding. The specific configuration can vary depending on the compressor design and application.
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.
. Through a terminal box with three motor terminals one for the run winding and one for the start winding and one for the common line to the run and start windings
Terminal Three
Potentiometer