Contents :
1.Practical
-Practical safe method – Fire fighting
-Identify common Basic Refrigeration tools with specification and function
-Setting of Oxy -aceteylene flame
-To Unroll ,Cut and Bend soft copper tubing
-To swage and make a brazed join on copper tubing of same size
-To make flare joints and test them with flare fitting
-Check compressor efficiency and the operational condition of a compressor
-Measure the current of a given load in an AC circuit without interrupting connecting (Tong – Tester )
-Identify various Refrigerant with Cylinder and valves
-Trace the electrical wiring circuit
-Check and service tempreture and pressure controls (low pressure switch,solenoid)
-Check and service high pressure safety cut out oil pressure safety cutout
-Check and cut all the Gaskets and assemble the commercial compressor
-De – scale the shell and tube condensor – Identify and Arrest the tube leaks
-Check and service the dry type evapourator
-Pump down ,Pressure test,Leakarrest,evacuate ,charge or topup the gas
-De – Scale Air handdling Unit (AHU) Chilled water coil
-Check and service,attend the fault in cooling tower water circulation pump
-Check and maintain the quality of chilled water
-Clean cooling tower and accessories ,replace and rectify problems

2. Theory
-Safety practice – Fire extingushers
-Common basic Refrigeration tools and their functions
-Setting of Oxy – Acertylene flame
-Tubling – Cuttinf and Bending methodology
Swaging
-Flaring ,Flare fittings and testing the joints
-Efficiency and testing of commercial reciprocating compressor
-Measuring voltage and current using multi meter
-Refrigerants -History, Classification ,Properties ,Environment
-Central Air -Conditioning plant wiring circuit
-Temperature and pressure controls
-High pressure safety cutout ,safety valve and Oil pressure cut -out
-Classification of commercial compressor and the gasket
-Descaling in shell and tube condensor
-Dry expansion Evapourators
-Transfer refrigerant to shell and Tube condensor
-Air Handling Units & air washer in Air – conditioning plants
-Water circulation pumps
-Chilled water treatment
-Cooling Towers

3.Assignment & Test