Carbon Monoxide Safety Association
An Affiliate of the ESCO Group

Universal R-410A Safety Training

Course Description:

R410A operates at considerably higher pressures than R22 and requires the use of special tanks, gauges and recovery equipment. R-410A systems employ thicker walled tubing, newly developed compressors, and a higher grade oil that requires different installation and service procedures.  Technicians must understand the safe handling, proper charging procedures, and operating characteristics of R410A systems.

PURPOSE OF TRAINING

R-22 is being phased-out. New equipment will use R-410A, a refrigerant that can operate at up to 70% higher pressures creating potential safety issues..

As the phase-out of R-22 progresses, older equipment will need to be retrofit to one of several substitutes. These substitutes have a large temperature glide requiring special knowledge in charging procedures.

This program is designed to educate HVACR technicians in the proper safe handling and application of R-410A Refrigerant, and retrofit procedures for R-22 systems.

WHO SHOULD ATTEND

Specifically designed for:

• HVAC technicians

• Service contractors

• Facilities maintenance personnel

• Safety Managers

COURSE FORMAT

One Day Interactive Lecture with Visual aides. Course prepares technicians for the R-410A Certification exam. Successful candidates will be certified in R-410A.

ONE DAY COURSE CONTENTS

• R-410A and the R-22 Phase-out

  • HCFC Phase out Schedule

  • Regulation and Change

  • The Future

  • Safety and R-410A

• Refrigeration & Air Conditioning Systems Fundamentals

  • Vapor Compression System

  • Condensing Pressure

  • Evaporating Pressure

  • Refrigerant States & Conditions

  • Saturation

  • Vapor Pressure

  • Superheat

  • Subcooling
     

• Basic Refrigeration System Components

• Compressor

• Compression Ratios (R-410A Considerations)

• Discharge Line

• Condenser (R-410A Considerations)

• Receiver

• Filter/Driers (R-410A Considerations)

• Liquid Line (R-410A Considerations)

• Metering Device (R-410A Considerations)

• Evaporator (R-410A Considerations)

• Suction Line (R-410A Considerations)

• Refrigerant Chemistry and Applications

  • Chlorofluorocarbons (CFC’s)

  • Hydrochlorofluorcarbons (HCFC’s)

  • Hydrofluorocarbons (HFC’s)

  • Blends

  • Blend Fractionation

  • Blend Temperature Glide

  • Superheat & Subcooling Calculation for Near-Azeotropic Blends

  • Subcooling & Superheat with Temperature Glide

  • Evaporator Superheat Calculation

  • Condenser Subcooling Calculations

  • Blend Lubricants
     

• HCFC-22 Replacement Candidates

  • R-410A
     

• Typical Operating Pressures Temperature Glide & Fractionation

  • Pressure / Temperature Chart
     

• R-407C

  • Temperature Glide & Fractionation
     

• Basic Service Tools

  • Gauge Manifold (R-410A Considerations)

  • Micron Gauge

  • Vacuum Pumps (R-410A Considerations)

  • Leak Detectors (R-410A Considerations)
     

• Refrigerant Recovery Systems

  • Passive Recovery (System Dependant)

  • Active Recovery (Self Contained)  (R-410A Considerations)
     

• Refrigerant Charging

  • Undercharge

  • Overcharge
     

• R-410A System Charging

  • Charging for Proper Subcooling

  • Charging for Proper Superheat

  • Precautions
     

• R-407C System Charging
   

• R-407C Refrigerant Leaks & Leak detectors
   

• Refrigeration Oils & Their Applications

  • Oil Groups

  • Synthetic Oils

  • Alkybenzene

  • Glycols

  • Esters

  • Waste Oils

  • Lubricants, R-410A, R-407C & R-134A

  • Advantages of POE vs. Mineral oils

  • Concerns with POE Lubricants

• Safety

  • Personal Safety Protection

  • Electrical Safety

  • Safe Refrigerant Handling

  • Storage Cylinders

  • Shipping

  • ASHRAE Standard 34

  • Equipment Room / Job Site Safety

  • Monitors / Alarms
     

• Ventilation

  • Purge Venting

  • Breathing Apparatus
     

• Safety Overview

  • R-410A Considerations

  • Material Safety Data Sheet

  • Toxicity

  • Flammability

  • Combustibility

  • Ingestion

  • Skin / Eye Contact

  • Inhalation

  • Refrigerant Decomposition
     

• Environmental Considerations

Typical Seminar Agenda

7:30am Registration
8:00am Class Begins
12:00 -- 1:00pm Lunch (on your own)
4:30pm Class ends
2 Evening classes equal 1 daytime class
 

Certification: Course participants have the opportunity to take the AC&R Safety Coalition Universal R-410A exam.

Course Text: Universal R-410A Safety and Training

Register: Call Toll Free 1-800-394-5253 or check our training schedule.