Service | Maintenance |Â AC Technicians & AC Mechanics
Introduction to HVAC Systems
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Basics of HVAC Systems.
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HVAC Applications.
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Refrigeration Cycle.
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PH Chart & R410A Cycle.
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Superheat & Subcooling.
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Components of Refrigeration Cycle.
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Types of Refrigerants.
Understanding of HVAC System
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Types/Classification of HVAC Systems.
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Types/Classification of Chilled water Systems.
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Understanding Ventilation Systems.
Project Installation
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DUCTWORK INSTALLATION.
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UNDERSTANDING DUCTING NETWORK.
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PIPE WORK INSTALLATION.
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METHOD STATEMENT OF INSTALLATION
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REFRIGERANT PIPING
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DRAIN PIPING.
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UNDERSTANDING A FAN COIL UNIT.
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SAMPLE HARDCOPY DRAWING STUDY
Testing & Commissioning
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Understanding of T & C Process.
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Pre commissioning Checklist.
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Supplier T & C Reports.
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Third party T & C Reports.
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Instruments - 3rd party team.
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Refrigerant charging process.
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Tools & Instruments -T&C
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T&C format for AC Split System.
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Final snagging and handover.
Service & Maintenance
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HVAC Unit Capacity.
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DLP & AMC.
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Major & Minor/Preventive service.
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Basic Faults, Causes & Solutions.
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General Repair complaints.
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R32 Inverter Units.
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Power saving with Inverter units.
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Retrofit of existing System.
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DEWA Sustainability measures.
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Line Freezing & Hot tapping.
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Master- Slave concept of Unit Control.
VRF SYSTEMS
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Understanding a VRF System.
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Installation guidelines of VRF System.
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Study of PPI Job VRF Network.
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VRV Unit working Concept.
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VRV Unit Components.
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Study of Error Codes.
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Testing & Commissioning -Tools used.
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Study of AC Shop drawings.
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Heat recovery & Heat Pump Systems.
Samples & Documentation
​1. Study of HVAC Samples.
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Ducting.
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Refrigerant Piping.
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Chilled water piping.
2. Basic working Tools & Instruments.
3. Calibration certificates.
4. Site documentation & Inspections.
5. Understanding various Job Profiles.
6. AMC Contracts & Quotations.
7. Questionnaire.
Operation & Maintenance
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Ducted Split Units.
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VRF Units.
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Chilled water FCU & FAHU.
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Pumps.
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Ventilation Fans.
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ESP.
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Chemical Dosing Unit.
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Chiller Maintenance & Overhauling.
Other
Mechanical HVAC Drawings
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Types of Drawings.
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Typical HVAC Installation details.
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Chilled water Shop drawings.
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Air cooled System.
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District Cooling System.
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ETS Room & Pump Room.
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VRF Shop drawings.
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DX Split & Package unit drawings.
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Ventilation Schematic drawings.
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Service coordination drawing.
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Carpark Ventilation Drawings.
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School – CO2 Ventilation system
Practical Working
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Electrical components in Indoor & Outdoor.
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Basic service for Indoor & Outdoor units.
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Nitrogen pressure test, Vacuuming
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Brazing, Flaring, Checking gas pressures.
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Gas charging, Amps, Voltage.
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Airflow & Temperature measurement Indoor.
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Analyzing civil related issues affecting performance.
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Analyzing unit capacities by Thumb rules.
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Analyzing substandard Installation affecting performance.
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Site Visits.