Course Number: VEM114

Course Title: Refrigeration II
 

STUDENT LEARNING OUTCOMES 

General Objective

This course is design to equip individual with operational skills in Air Conditioning and Refrigeration service to install, service and maintain, trouble shoot and repair split type air conditioning units.

Specific Objectives
 

Students will be able to:

1.  select suitable installation site.
        select installation site for equipment
        provide piping installation plan
        maximize air distribution
        plot site for electric controls and wiring installation

2.  install split type air conditioning unit.
        identify troubles related with the installation work.
        explain the procedures of installation
        demonstrate bringing in of units
        discuss safety precautionary measures for installation
        make pipe holes

3.  install system piping.
        determine allowable piping length and level difference
        compute actual piping length and equivalent piping length
        connect refrigerant piping
        demonstrate leak testing
        evacuate air conditioning unit
        charge refrigerant in the system

4.  connect electrical system of split type air conditioning unit.
        lay-out wiring of split system air conditioner
        install power supply wiring
        install controls and protective devices
        determine the sizes of electric wires
        discuss the procedures for grounding work
        test run electrical system

5.  service and maintain split type air conditioning unit.
        check mechanical components operating condition.
        perform system lubrication
        measure refrigerant charge
        clean air distribution system

6.  troubleshoot split type air conditioning unit.
        discuss troubleshooting decision aid
        diagnose system by use of pressure gauge
        explain major troubles with the refrigeration cycle
        determine unit troubles and countermeasures

7.  recover and recycle refrigerant in split type air conditioning unit.
        assess unit for refrigerant recovery/recycling
        demonstrate steps in setting up recovery/recycling equipment
        operate refrigerant recovery/recycling equipment.

8.  repair and retrofit split type air conditioning unit.
        evaluate system condition
        explain retrofitting
        identify refrigerant
        recognize refrigerant cylinder and color codes
        practice safety precautions in handling refrigerant

9.  perform start up and commissioning.
        inspect before test run
        perform unit test run
        measure operating items
        prepare standard operation data
        conduct data measurement in the field