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44

Competency and Task List

Heat Pump

Students must

have knowledge

of Heat Pump

system

components and

be able to

demonstrate

proficiency in:

Installing and evaluating a liquid line bi-flow drier

Installing and evaluating a liquid line drier

Explain the function of a suction line filter drier

Installing and evaluating a suction line filter drier

Identifying the types of micron gauges

Explain the method for connecting a micron gauge to the system

Describing and performing the triple evacuation method

Describing heat pump charging procedures

Explain charging using the manufacturers literature

Calculating and demonstrating the weigh-in charging method

Determine required superheat and subcooling for an operating system

Explain charging using the superheat method

Select the proper refrigerant oil for an operating system

Explain charging using the subcooling method

Demonstrating charging using the manufacturers literature

Demonstrating proper charging of HCFC and HFC refrigerants into an operating system

Demonstrating proper charging of HCFC and HFC refrigerants into an empty system

Describing the operation of and the testing method for a high pressure switch

Describing the operation of and the testing method for a low pressure switch

Describing the procedure to perform a compressor efficiency test

Students should

have knowledge

of & be able to

describe &

demonstrate the

following safety

requirements:

Ladder safety procedures

Fall prevention procedures

Refrigerant handling

Nitrogen handling procedures

Heat Pump

troubleshooting &

problem solving:

Troubleshooting and Problem Solving involves diagnostic procedures requiring the use of test

equipment, manufacturers installation and start up procedures, and data plate information.

Knowledge of

the following

test instruments

and or tools is

required:

Anemometer

Thermometers (wet and dry)

Gauge manifold assembly

Recovery equipment

Vacuum pump

Micron gauge

Leak detector

Nitrogen Cylinder

Soldering and brazing equipment

Charging scale and Charging cylinder

Refrigerant throttling valve

Ohmmeter

Ammeter

Voltmeter

Valve Core removal tool

Flaring tool/ tubing cutters

Tubing benders

Sling Psychrometer