HVAC Operation & Maintenance

1. Basic fundamentals of Air-conditioning.
2. Basic refrigeration cycle.
3. Types of the air-conditioning system.
4. Components of air-conditioning system.
5. Line diagrams of
Window A/c
Split A/c
Package A/c
Central A/c system
6. Terminology used in air-conditioning.
7. Types of the compressors.
8. Types of the condensers.
9. Types of evaporators.
10. Types of cooling towers.
11. Types of Air Handling Units.
12. Types of controls used in air-conditioning systems.
13. Chilled water system.
14. Direct expansion system.
15. Operation :-
Operating procedures
Starting sequence
Stopping sequence
Log sheet for plant room readings
Log sheet for room temperature readings
Inspection and routine maintenance
Routine service operations

-Pumpdown of the A/c system

-Purging of the non condensable gas

-Gas charging of A/c system
16. Preventive maintenance of
Window A/c
Split A/c
Package A/c
Central A/c System
17. Maintenance schedules of air-conditioning systems.
18. Condenser descaling method.
19. Methods of control settings:-
HP-LP switches
Thermostat switches
Oil Pressure switches
20. Method of setting super heat of expansion valve.
21. Diagnoses of the faults.
22. Trouble shooting of faults.


Two projects: - Case study of trouble shootings



Back to H.V.A.C (Heating Ventilation & Air-Conditioning)