Table of Content
 

 

Swaging and copper tube joint

  • The four basic categories of sign are as follows
  • Flaring tool with yoke
  • Tube cutter
  • Pipe bending tool
  • Swaging tools
  • Pinching tools
  • Pressure gauges
  • Compound gauge
  • Thermometer
  • Leak defects
  • Soap bubble method
  • Halide torch method
  • Electronic detector
  • Gauge manifold
  • Sling psycho meter
  • Swaging on copper tubing
  • How to use a brazing torch
  • Acetylene torch
  • Propane turbo torch
  • Kerosene blow lamp
  • Silver brazing
  • Flux

Flaring, flare fitting and testing the joints

  • Flaring necessity
  • Types of flaring
  • Single thickness flare
  • Double thickness flare
  • Flared tubing fittings
  • Pressurizing the joint on tubing

Introduction of Room Air conditioner

  • Air conditioning
  • Automatic air conditioning
  • Air conditioner
  • Air conditioning unit
  • Room air conditioner
  • Mechanical parts
  • Electrical devices / control
  • Splitair conditioner unit
  • Compressor
  • Condenser
  • Filter drier
  • Capillary tube
  • Evaporator
  • Selector switch
  • Thermostat
  • Relay
  • O.L.P
  • SplitA/C condenser fan
  • Window A/C
  • Evaporator fan
  • Capacitors
  • Fan motor
  • Window unit
  • Refrigerant unit
  • Refrigerant control
  • Temperature control
  • Working principle of window A/C
  • Differentiate the window and split AC

Capacitors, Relays, over load protector and Thermostat

  • Capacitors
  • Start capacitors
  • Run capacitors
  • Starting Relay
  • Current ( magnetic ) relay
  • Solid state relay
  • Compressor winding
  • Thermostat and its function
  • Cut- in and cut temperature
  • Differential setting
  • Range setting
  • Hermetically sealed compressor
  • Compressor motor

Check winding in hermetic compressor.

Air flow and its properties

  • Air movement in an air conditioned area
  • Measuring air flow
  • Measurement location for a velocity reverse traverse
  • Anemometer
  • Velocimeter ( Swinging vane )
  • Velocity pressure ( Pilot tube )

Electric wiring of window and split A/C

  • PSC circuit in window A/C
  • The working of split A/C
  • PSC circuit in split A/C

Contamination in hermetically sealed system

  • Introduction
  • Contaminant
  • What is contaminant?
  • Causes of contaminants
  • Effects of contaminants
  • Control of contaminants

Dehydrator (Filter driers)

  • Moisture in the system
  • Effects of excessive moisture
  • Moisture Remover

Use of high purity nitrogen for pressure testing and leak checking

  • Why dry nitrogen should be used?

Evacuation of the Refrigeration System

  • Evacuation
  • Why evacuate
  • How do we evacuate the system
  • Boiling point of water at various pressures
  • Need for vacuum pump
  • What type of vacuum pump
  • Construction of two stage Rotary vacuum Pumps Effects of Altitude
  • Rotary Pumps ( Positive displacement pumps )
  • Rotary vane pumps
  • Gas ballast
  • Without gas ballast
  • With gas ballast
  • Pressure Compound and Vacuum Gauges
  • Refrigerant quantity
  • Charging by liquid or vapour
  • Vapour charging
  • Liquid charging
  • Charging Accurately
  • Refrigerant charging
  • Charging with a charging cylinder
  • Charging by weight
  • Charging by sight glass
  • Charging refrigerant using front line method

Performance test of air conditioner

  • System performance
  • Setting high and low pressure
  • Precaution to be taken

Defects in Split Air – Conditioner “Compressor does not start”

  • Symptom: “Compressor does not start”

Defects in Split Air – Conditioner “Compressor trips frequently”

  • Symptoms: “Compressor trips frequently”

Defects in Split type Air – Conditioner “Poor cooling – Gas Shortage”

  • Symptom: “Poor cooling”

Apply for Certification

https://www.vskills.in/certification/Vskills-Certified-Air-conditioner-Mechanic