HomeService Maintenance and Troubleshooting

Service Maintenance and Troubleshooting

AC Technician Training Course

( MODULE 1 ) Introduction to HVAC Systems

Basics of HVAC Systems.
HVAC Applications.
Refrigeration Cycle.
PH Chart & R410A Cycle.
Superheat & Subcooling.
Components of Refrigeration Cycle.
Types of Refrigerants.

( MODULE 2 ) Types of HVAC System

Types/Classification of HVAC Systems.
Types/Classification of Chilled water Systems.
Understanding Ventilation Systems.

(MODULE 3) Project Installation (Practical)

Understanding a fan cooling Unit.
Understanding Ducting Network
Pipe Work Installation & Method Statements.
Wiring – FCU, Thermostat, Outdoor Unit.       
Refrigerant Piping
Drain Piping
Duct Work Installation.
Sample Hardcopy Drawing Study.                              

( MODULE 4 ) Testing & Commissioning

Understanding of T & C Process.
Pre commissioning Checklist.
Supplier T & C Reports.
Third party T & C Reports.
Instruments – 3rd party team.
Refrigerant charging & Recovery.
Tools & Instruments -T&C
T&C format for AC Split System.
Final snagging and handover.

(MODULE 5) Service & Maintenance(Practical)

HVAC Unit Capacity.
DLP & AMC.
Major & Minor/Preventive service.
Basic Faults, Causes & Solutions.
General Repair complaints.
R32 Inverter Units.
Power saving with Inverter units.
Retrofit of existing System.
DEWA Sustainability measures.
Line Freezing & Hot tapping.
Master- Slave concept of Unit Control.

( MODULE 6 ) VRF Systems

Understanding a VRF System.
Installation guidelines of VRF System.
Study of PPI Job VRF Network.
VRV Unit working Concept.
VRV Unit Components.
Study of Error Codes.
Testing & Commissioning -Tools used.
Study of AC Shop drawings.
Heat recovery & Heat Pump Systems.

( MODULE 7 ) Tools & Instruments

1. Study of HVAC Samples.
Ducting.
Refrigerant Piping.
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.

( MODULE 8 ) Operation & Maintenance

Ducted Split Units.
VRF Units.
Chilled water FCU & FAHU.
Pumps.
Ventilation Fans.
ESP.
Chemical Dosing Unit.
Chiller Maintenance & Overhauling.

( MODULE 9 ) Mechanical HVAC Drawings

Types of Drawings.
Typical HVAC Installation details.
Chilled water Shop drawings.
Air cooled System.
District Cooling System.
ETS Room & Pump Room.
VRF Shop drawings.
DX Split & Package unit drawings.
Ventilation Schematic drawings.
Service coordination drawing.
Carpark Ventilation Drawings.
School – CO2 Ventilation system

( MODULE 10 ) Practical Working

Electrical components in Indoor & Outdoor.
Basic service for Indoor & Outdoor units.
Nitrogen pressure test, Vacuuming
Brazing, Flaring, Checking gas pressures.
Gas charging, Amps, Voltage.
Airflow & Temperature measurement Indoor.
Analyzing civil related issues affecting performance.
Analyzing unit capacities by Thumb rules.
Analyzing substandard Installation affecting performance.
Site Visits & Safety PPE.

Service | Maintenance | AC Technicians & AC Mechanics

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