Quarterly service - induced draft cooling tower (crossflow and counterflow)
Estimated duration: 2 - 3 hours • Frequency: every 3 months
Equipment Details
| # | Service Action | Type | Done | Notes |
|---|---|---|---|---|
| Fill Media & Basin | ||||
| 1 | Inspect fill media for scaling, fouling and biological growth | INSPECT | ☐ | |
| 2 | Clean sump/basin (remove debris, sediment and biofilm) | CLEAN | ☐ | |
| 3 | Inspect drift eliminators (damage, displacement, fouling) | INSPECT | ☐ | |
| Water Treatment | ||||
| 4 | Check water treatment system (chemical dosing rates, conductivity, biocide residual) | CHECK | ☐ | |
| 5 | Check water distribution system (nozzles or distribution troughs - even flow, no blockages) | CHECK | ☐ | |
| 6 | Inspect make-up water valve and float operation | INSPECT | ☐ | |
| 7 | Test bleed/blowdown valve operation | TEST | ☐ | |
| 8 | Check overflow and drain | CHECK | ☐ | |
| Fan & Drive System | ||||
| 9 | Check fan motor (running amps, vibration, noise) | CHECK | ☐ | |
| 10 | Inspect fan drive (belt tension, sheave alignment, or gearbox oil level if gear-driven) | INSPECT | ☐ | |
| 11 | Inspect fan blades (cracks, corrosion, tip clearance) | INSPECT | ☐ | |
| 12 | Inspect bearings (temperature, noise, lubrication) | INSPECT | ☐ | |
| Legionella Risk Management & Compliance | ||||
| 13 | Legionella risk management checks (water temperature, stagnant areas, aerosol control) | CHECK | ☐ | |
| 14 | Take water sample for microbiological testing (if due per risk management plan) | SAMPLE | ☐ | |
| Safety & Access | ||||
| 15 | Inspect access hatches, ladders and safety provisions | INSPECT | ☐ | |
| Operating Data | ||||
| 16 | Log operating data (water temps in/out, wet bulb, fan amps, water flow) | RECORD | ☐ | |
Fluid / Chemical Specifications (General Guide)
| System | Type / Grade | Notes |
|---|---|---|
| Water treatment chemicals | Biocide, anti-scale, corrosion inhibitor | Per water treatment plan |
| Gearbox oil (gear-driven fans) | EP 220 / 320 | Check level, top up if low |
| Bearing grease | EP2 | As required |
Specifications are general guidelines. Always refer to the cooling tower manufacturer's manual and your water treatment provider's recommendations for your specific installation.
Parts / Consumables Required
| # | Part / Consumable | Part Number | Qty | Ready |
|---|---|---|---|---|
| 1 | Water treatment chemicals (biocide, anti-scale, corrosion inhibitor) | As req. | ☐ | |
| 2 | Replacement nozzles (if blocked/worn) | As req. | ☐ | |
| 3 | Drift eliminator sections (if damaged) | As req. | ☐ | |
| 4 | Bearing grease EP2 | As req. | ☐ | |
| 5 | Gearbox oil EP 220/320 (if gear-driven) | As req. | ☐ | |
| 6 | Water sample bottles (microbiological) | As req. | ☐ |
Notes / Defects Identified
Next Service Due
Technician
Facilities Manager