1. Routine Maintenance Tasks
A. Daily/Weekly Checks
Visual Inspections – Look for leaks, corrosion, or damaged components.
Water Levels – Ensure proper water levels in the sump (if applicable)
Fan & Motor Operation – Check for unusual noise/vibration.
Strainers & Filters – Clean if clogged to maintain flow rate.
B. Monthly Maintenance
Heat Exchanger Coils – Inspect for scaling, fouling, or biofilm build up.
Drift Eliminators – Clean to prevent water loss and mineral deposits.
Water Treatment – Test and adjust chemical levels (biocides, corrosion inhibitors).
Pump Performance – Verify pressure and flow rates.
C. Quarterly/Biannual Tasks
Deep Cleaning of Coils – Use high-pressure water or approved chemicals to remove deposits.
Belt & Bearing Lubrication – For fan and pump motors.
Electrical Components – Inspect wiring, connections, and controls.
2. Seasonal & Annual Maintenance
Winter Preparations (Cold Climates)
Freeze Protection – Drain water or use glycol mixtures if needed.
Inspect Heaters – Ensure basin heaters (if present) are functional.
Summer Efficiency Checks
Optimize Fan Speed – Adjust for peak cooling demand.
Check Refrigerant Levels – If integrated with a chiller system.
Annual Shutdown Inspection
Full System Flush – Remove sediment and contaminants.
Corrosion Check – Inspect metal components (coils, piping).
Structural Integrity – Check for rust, cracks, or weakened supports.
3. Water Treatment & Chemical Management
- Scale Inhibition – Use anti sealants to prevent mineral build up.
- Biocide Treatment – Prevent algae, bacteria, and Legionella growth.
- pH Balancing – Maintain between 7.0–9.0 to avoid corrosion or scaling.
- Closed Loop Testing – Regularly analyse water quality.
4. Common Issues & Troubleshooting
| Issue | Possible Cause | Solution |
| Reduced Cooling Efficiency | Fouled coils, low airflow | Clean coils, check fans |
| Water Leaks | Damaged gaskets, cracks | Replace seals, repair leaks |
| Excessive Noise/Vibration | Misaligned fan, worn bearings | Realign or replace parts |
| High Energy Consumption | Dirty coils, poor water treatment | Optimize cleaning & chemistry |
5. Best Practices for Long-Term Performance
- Automated Monitoring – Use IoT sensors for real-time water quality, temperature, and flow tracking.
- Preventive Maintenance Contracts – Partner with HVAC specialists for scheduled servicing.
Spare Parts Inventory – Keep critical components (belts, gaskets, pumps) on hand.
Documentation – Maintain logs of inspections, chemical treatments, and repairs.