C-38 – Refrigeration Contractor

A refrigeration contractor constructs, fabricates, erects, installs, maintains, services and repairs refrigerators, refrigerated rooms, and insulated refrigerated spaces, temperature insulation, air-conditioning units, ducts, blowers, registers, humidity and thermostatic controls for the control of air, liquid, and/or gas temperatures below fifty degrees Fahrenheit (50 ), or ten degrees Celsius (10 ).

The Refrigeration (C-38) Examination is divided into five major sections. These sections are:

1. Job Preparation (11%)

• Plan/schematics
• Types of refrigeration systems

2. Installation (23%)

• Critical path requirements
• Rough installation
• System start up and testing

3. Maintenance (18%)

• Inspections and documentation
• Preventative maintenance

4. Troubleshooting/Repair (30%)

• Common refrigeration system problems
• Troubleshooting techniques/diagnosis
• System repair

5. Safety (18%)

• Chemical hazards
• Working in elevated areas
• Worker safety/training
• Electrical hazards

*Percentages are approximate*