SR171 Electrical Connection Of Refrigerant Compressors

1. Description
The wiring of electrical components for the start and operation of refrigerant
compressors is a typical task in the field of refrigeration. Safety aspects
also play an important role. With SR 171 this knowledge and these skills can be
acquired. All components are operated and tested with mains voltage to provide
high relevance for practice.
The electrical components for the start and operation of the refrigerant
compressor are arranged clearly visible. The electrical connection of the
individual components is made with cables via the lab jacks. The components are
e.g. the capacitor and startup relay necessary to start the motor. The circuit
diagram on the front panel enables the easy allocation of the individual
components.
The refrigeration circuit with compressor and receiver enables the checking of
the pressure switches on the intake and delivery side of the compressor. The
pressure is set via valves and the pressure switch tripped. Two manometers
enable the monitoring of the pressure curve. If one of the pressure switches
trips, the current supply to the compressor is interrupted. The wiring and
checking of other typical components of the safety chain, e.g. circuit breaker
and automatic fuse, is also carried out.

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