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Center for Curriculum and Transfer Articulation
Refrigeration Applications and Components I Lab
Course: FAC101LL

First Term: 2003 Fall
 Laboratory   1 Credit(s)   3 Period(s)   2.4 Load  
Subject Type: Occupational
Load Formula: S


Description: Servicing refrigeration units. Includes soldering tubing, installing/removing manifold gauge set, evacuating and charging the system. Emphasis on safety



MCCCD Official Course Competencies
1. Given the specifications, construct a leak-free tubing project demonstrating flaring, swaging, soldering/silver brazing, and required torch safety procedures. (I)
2. Demonstrate procedures for installing and removing the manifold gauge set while providing verbal explanations for procedural steps. (II)
3. Following safety protocols, demonstrate procedures for evacuating refrigerant systems, while providing verbal explanations for procedural steps. (III)
4. Select the proper refrigerant for specific refrigerant systems. (IV)
5. Demonstrate procedures for charging a refrigerant system utilizing appropriate safety procedures. (IV)
6. Demonstrate the procedure for leak testing utilizing appropriate methods and according to safety procedures. (V)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.
 
MCCCD Official Course Outline
I. Copper Tubing
   A. Cutting
   B. Flaring
      1. deburring
      2. filing square
      3. checking fit
   C. Swaging
      1. selecting tools
      2. evaluating cup
         a. depth
         b. pipe clearance
   D. Soft soldering
      1. cleaning surface
         a. pipe
         b. cup of fitting
      2. flux
         a. flux for filler rod
         b. female end 1/8 from end
      3. soldering procedure
         a. torch selection
         b. heating of pipe/fitting
         c. applying filler rod
   E. Hard soldering
      1. cleaning pipe/fitting
      2. rod selection
         a. phoscopper
         b. silphos
         c. silver solder
      3. flux pipe
      4. torch selection
      5. heating pipe/fitting
   F. Bending tubing
      1. tube bender selection
      2. measuring for bend
      3. manufacturer`s guidelines
   G. Following/producing
      1. specification sheet
      2. copper tubing test
   H. Torch safety
II. Manifold Gauge Set
   A. Service valve positions
      1. back seat
      2. cracked
      3. front seated
   B. Manifold gauge set
      1. compound gauge low side
      2. pressure gauge high side
      3. hand wheels
         a. open
         b. closed
      4. hoses
         a. low side
         b. charging/purging
         c. high side
   C. Installing gauge set-service valve
      1. back seat service valve
      2. hand wheels
      3. gauge port cup
      4. hose via refrigerant cylinder
      5. hose-gauge port
      6. service valve
      7. pressure
   D. Removing hose
      1. back seat high side service valve
      2. center hose of gauge set
      3. hand wheels
      4. pressure equalization
      5. back seat service valve
      6. hoses
      7. gauge port cup
      8. service valve stem cup
   E. Safety
      1. eye protection
      2. hand protection
      3. refrigerant cylinder
         a. full level
         b. transporting
         c. heating cylinder
   F. Schrader valve
      1. hose to valve
      2. quick connect
III. Evacuation Process
   A. Gauges
   B. Vacuum pump
   C. Types of procedures
      1. triple
      2. deep using a micron gauge
   D. Safety
   E. Remove gauges
IV. System Charging
   A. Methods
      1. pressure/temperature/superheat
      2. manufacturers` charts
      3. sight glass
      4. measuring
   B. Install gauges
   C. Charge system
   D. Remove gauges
   E. Safety
      1. eye protection
      2. hand protection
V. Leak Testing
   A. Methods
      1. visual
      2. halide - time
      3. electronic
      4. liquid soap - speed
   B. Safety
      1. halide - toxic gas
      2. electric/electronic - shock hazard
 
MCCCD Governing Board Approval Date: 6/17/2003

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.