Views: 0 Author: Site Editor Publish Time: 2025-09-29 Origin: Site
Here’s a detailed EVAPCO Cooling Tower Maintenance Checklist — suitable for closed-circuit and open-circuit towers. Regular maintenance helps ensure efficient operation, energy savings, and extended equipment life.
| Task | Description |
| Visual Inspection | Check for unusual noise, vibration, or leaks |
| Water Level | Ensure basin water level is within operating range. Adjust make-up valve if necessary |
| Pump Operation | Verify pump operation and check for leaks or noise |
| Fan Operation | Observe fan rotation, noise, and balance. Check VFD operation (if applicable) |
| Strainers | Inspect and clean strainers to prevent clogging |
| Bleed-off | Confirm bleed-off system is functioning to control water chemistry |
| Task | Description |
| Water Treatment | Test and adjust water chemistry (pH, conductivity, hardness, biocide) |
| Fill Media / Coil Surfaces | Inspect for scale, slime, algae, or debris. Clean if fouling is visible |
| Fan Motor | Check for overheating, vibration, or noise. Inspect electrical connections |
| Belts (if belt-driven) | Inspect tension, alignment, and wear. Adjust or replace if needed |
| Nozzles / Spray System | Inspect for clogging; clean or replace as required |
| Drift Eliminators | Inspect for damage or clogging. Clean if necessary |
| Task | Description |
| Basin Cleaning | Drain and remove sediment, sludge, or biological growth |
| Coil Cleaning (Closed Circuit) | Clean coil surface with water or chemical coil cleaner to maintain heat transfer |
| Fan Blades | Check for cracks, corrosion, and tightness. Clean blades. |
| Vibration Check | Measure and record fan vibration levels. Investigate abnormal readings |
| Electrical Components | Inspect starter, contactors, wiring, and control panel. Tighten connections. |
| Task | Description |
| Motor Bearings | Lubricate per manufacturer’s recommendation (if applicable) |
| Fan Shaft Bearings | Inspect and lubricate bearings. Replace if worn |
Gear Drive / Belt Drive | Check oil level and change if dirty; inspect alignment. |
| Structural Components | Inspect casing, supports, access doors, ladders for corrosion or damage. Touch up coating. |
| Task | Description |
| Full System Inspection | Comprehensive check of mechanical, electrical, and water systems |
| Deep Cleaning | Descale fill, clean coil with approved chemicals, disinfect basin and piping |
| Winterization (if seasonal) | Drain system or add glycol solution. Protect against freezing |
| Component Replacement | Replace worn-out belts, seals, gaskets, and filters. |
| Calibration | Calibrate sensors (temperature, conductivity, level) |
| Parameter | Recommended Range |
| pH | 6.5 – 9.0 |
| Conductivity | As per local water treatment guidelines |
| Calcium Hardness | 50–500 ppm |
| Total Alkalinity | 50–500 ppm |
| Chlorides | < 250 ppm |
| Silica | < 150 ppm |
Lock out/tag out (LOTO) before performing maintenance.
Use PPE (gloves, goggles, mask) during chemical handling and cleaning.
Follow EVAPCO’s official Operation & Maintenance Manual for your model.
