Credits

3 (0/3/0)

Description

This course covers the application of electrical principles used in commercial, industrial, hospital and supermarket refrigeration systems. Safety is emphasized.

Prerequisites

Completion of HVAC/R diploma.

Competencies

Practice all safety guidelines regarding electricity.
Install a low-pressure time-delay bypass circuit for low ambient conditions.
Test run and start capacitors for opens, shorts and capacitance values using a volt-ohm meter.
Install a hard start kit on a single-phase air conditioner.
Demonstrate the use of current relays for compressor starting.
Program a commercial multistage electronic controller.
Diagnose compressor electrical failure using manufacturer's data.
Wire various advanced electrical circuits from wiring diagrams.
Employ ladder diagrams to evaluate large commercial refrigeration operating systems.
Replace a positive temperature coefficient (PTC) device with a potential relay and start capacitor.
Learn the correct ways to program and operate mechanical and electronic time clocks.