NH3 Operator II Competencies

GCAP’s Ammonia Operator II Competencies 

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Prerequisite: An “Approved” Ammonia Operator I Course

All of this material is covered or introduced to the student at our seminar. Most of this course is running hands on equipment in the lab. This selection of material will allow success in companies training structure and it follows the new IIAR Task Force Guideline using RETA’s 2012 IAR Book 2 and GCAP’s Supplemental Material.

Ammonia Operator II

  • Brief review of PSM/RMP, Ammonia Characteristic, Safety, Basic Refrigeration Cycle
  • Introduction and detail analysis of RETA’s CIRO Supplemental Packages
  • Theoretical Trouble Shooting
  • Hands-on Trouble Shooting
  • Consequences of Deviation
  • GCAP’s Oil Draining Video Analysis
  • Adjusting and Balancing various ammonia systems and designs
  • Calibrating Concepts and performance 4-20ma
  • Start-Up and Adjustments of training systems
  • NH3/CO2 Cascade Systems Theory

Detailed Annalist Liquid Feed to DX Evaporators

Topics:

  • Orifices of Expansion Valves
  • Automatic Liquid Feed Controls
  • Hand Feed Controls
  • TXV Feed Controls
    • Forces Involved in Opening / Closing
  • Vessels
  • Phase Seperation
  • Troubleshooting Metering / Expansion valves
  • Top Fed DX systems
  • Bottom Fed DX systems
  • Suction Line Accumulators
  • Flash Gas / Tax Gas
  • Distributers
  • Super Heat Requirements
  • Classifications of Superheat
  • Bulb / Capillary / Power Head
  • Mounting of Bulbs
  • Internally Equalized TXV’s / Externally Equalized TXV’s
  • Float Switches
  • Level Controllers
  • Gas Volume Temperature Comparisons
  • Erratic DX Coils
  • Slopover/ Burping/ Slugging/
  • Advantages / Disadvantages

Detailed Annalist Liquid Feed to Flooded Evaporators

Topics:

  • Term “Wetted”
  • Gravity Systems
  • Thermosyphon Systems
  • Surge Drums
  • Surface Area Comparison
  • Recirculation Ratio
  • Oil Control
  • Troubleshooting
  • Partially Flooded Systems
  • Requirements
  • Superheat
  • Flash Gas / Tax Gas
  • Liquid Make Up
  • Phase Separation
  • Advantages / Disadvantages

Detailed Annalist Liquid Feed to Overfeed Evaporators

Topics:

  • Term “Wetted”
  • Liquid Recirculation
  • Pumps
    • Centrifugal
    • Positive Displacement
      • Shaft Seal
      • Semi-Hermetic
      • Hermetic
  • Liquid Make Up
  • Recirculation Ratios
  • Single Pumper Drums
  • Double Pumper Drums
  • CRP Systems
  • Top Fed Overfeed
  • Bottom Fed Overfeed
  • Pump Pressure
  • Pressure Drop
  • Two pipe adjustments
  • Pump Sizing
  • Oil Removal
  • Advantages / Disadvantages

Detailed Annalist Secondary Coolants Systems

Topics:

  • Secondary Coolants
  • Advantages / Disadvantages
  • Glycols
  • Brines
  • Calcium Chloride
  • Sodium Chloride
  • Propylene Glycol
  • Ethylene Glycol
  • Two Pipe Systems
  • Three Pipe Systems
  • Expansion Tanks
  • Balance Tanks
  • Defrost
  • Pumps
  • Heat Exchangers
    • Shell and Tube
    • Plate
    • Plate and Frame
  • Eutectic Point

Detailed Annalist Heat Flow

Topics:

  • Thermal Conductivity
  • K Factor
  • U Factor
  • Forced Draft
  • Induced Draft
  • Centrifugal
  • Propeller
  • Pressure – Enthalpy
  • Mollier Diagrams
  • P-h Diagrams
  • Theoretical Analogy
  • Entropy
  • Net Refrigeration Effect
  • CFM Calculation
  • HP Calculations
  • Mass Flow Rate Calculations
  • Theoretical Discharge Temperatures
  • Subcooling Effect

Detailed Annalist Two Stage Systems and Cascade Systems

Topics:

  • Simple 3 pressure two stage systems
  • Multi pressured two stage systems
  • Intercoolers
  • Discharge
  • Boosters
  • Efficiency
  • Compression Ratio of multi pressure systems
  • Intermediate Pressure
  • Theory
  • Practical Operations
  • Swing Compressors
  • CO2 Cascade Systems
    • CO2 Cascade Brine
    • CO2 Cascade Compression
    • Application
    • Benefits and Advantages Compared to traditional two stage systems
  • Horsepower Savings Two Stage and Cascade
  • NewTon 3000 Cascade System
  • VFD’s
  • Microprocessors

Detailed Annalist Defrost

Topics:

  • Coil Defrost
  • Moisture / Air Relationship
  • Pump Down
  • Fan Delay
  • Soft Start
  • Bleed
  • Defrost Timings
  • Pressure Equalization
  • Air Defrost
  • Water Defrost
  • Electric Defrost
  • Continuous Defrost
  • Niagra Defrost
  • Hot Gas Defrost
  • Regulator Pressure
  • Consequences of Deviation of Defrost Practices

Detailed Annalist Enthalpy/Mollier Diagrams

Detailed Annalist Psychometric Chart

Detailed CIRO Exam Supplemental Package

Topics:

  • This packet is used in the Ammonia Operator II course for analytical troubleshooting.
  • Area of rectangle / circle
  • Volume of a room / cylinder
  • Brake Horse Power (BHP)
  • Kilowatts (Kw)
  • Power Cost in Dollars
  • HP/TON
  • Kw/TON
  • Heat Transfer Equations
    • Sensible
    • Latent
  • Compression Ratios
  • Vacuum Conversions
  • Saturation Charts
  • Analyze Figure of a Two Stage System
  • Analyze Figure of Top Fed DX Evaporator
  • Analyze Figure of Vessel and Piping
  • Analyze Figure of Forced Draft Evaporative Condenser
  • Analyze 3 way valve with reliefs
  • Analyze Figure of a Pump Package
  • Analyze an Electrical Schematic
  • Analyze all 24 screens from normal to abnormal conditions
  • Analyze MSDS Sheet for Ammonia

Contact us for more info

Garden City Ammonia Program
2405 E. Fulton Plaza
Garden City , KS 67846
620-271-0037
620-271-0484 FAX
ammonia@pld.com
www.AmmoniaTraining.com
www.BoilerLicense.com
www.GcapCoolCast.com

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