scope:

Mastering AC Service is a complete training class on computer video, taught by Jack Rise, one of the country's leading HVACR educators designed to help technicians and others take and pass the NATE specialty exam in AC Service.

Mastering AC Service is a complete training class on computer video, taught by Jack Rise, one of the country's leading HVACR educators designed to help technicians and others take and pass the NATE specialty exam in AC Service. Learn at your own pace! A must-have for the library of any contractor, school, distributor, or anyone interested in NATE certification for themselves or their employees. Each part includes handouts and example questions

Part 1 - Systems

• Split systems

• Condenser and evaporator air flow paths

• Attic installation of an air handling unit

• Condensate line size and pitch

• Brazing

• Packaged units

• Split condensing unit location

• Economizer operation

• Refrigeration piping methods

• Air cleaners

• Thermostats and ambient sensors

• Fire codes

• Duct insulation

• System efficiency

Part 2 -Refrigeration

• Sensible and latent heat

• Refrigeration circuits

• Superheat and subcooling charging methods

• Thermostatic Expansion Valve operation and installation

• Symptoms of overcharging and undercharging

• Proper evacuation procedures 

• Coil cleaning

• Refrigerant leak detection

• Purging and acid testing

Part 3- Airflow

• Duct system types

• Transverse duct joints

• Air volume and the Sensible Heat Equation

• Air velocity

• Air pressure

• Instruments

• Flexible duct installation practices

• Air balancing procedure

• Volume dampers

• Fan speed

• Return grilles

Part 4 - Electrical

• Series and parallel circuits

• Voltage, current and resistance

• Capacitors and their effects

• Results of series and parallel wiring

• External wiring of a compressor

• Use of transformers and the associated math

• Compressor electrical check-out

• Proper use of voltmeters, ammeters, and ohmmeters

• A procedure to determine when a switch is open or closed

• Wire size

• Time delay relays

• Low ambient controls

• Heat sequencers

• Nameplate concerns