Assess cooling tower thermal performance and relate approach and range readings to fouling or mechanical faults.
Engineering & Maintenance
Cooling Tower Mechanical Maintenance and Fill Media Replacement
Covers cooling tower thermal performance, fan and gearbox maintenance, fill media and drift eliminator replacement, and Legionella-aware water treatment coordination.
🗓️Duration5 training days
📚Content4 modules · 8 sessions
🎓On completionAccredited attendance certificate
About the programme
Course Overview
A cooling tower that loses two or three degrees of approach rarely announces the cause outright, and the answer is usually sitting inside the tower itself: scaled or sagging fill media, a worn gearbox, blocked nozzles or drift eliminators letting water carry away. This course works through cooling tower types, thermal performance indicators and the mechanical drive train of fans, gearboxes and bearings, before moving into the hands-on skills of fill media and drift eliminator inspection, cleaning and replacement. Participants learn to align drive shafts, balance fan blades, service gearbox oil systems and inspect tower structure and basins for corrosion, sediment and biological growth. Sessions connect mechanical maintenance to water treatment practice, covering Legionella risk control, biocide dosing and the makeup water quality issues that drive scaling and fouling. The course closes with preventive maintenance planning, spares strategy and performance monitoring, leaving participants able to keep a cooling tower fleet running at design efficiency across the cooling season.
Expected Learning Outcomes
Inspect and replace fill media, drift eliminators and spray nozzles to restore even air and water distribution.
Diagnose fan, gearbox and bearing faults from vibration, noise and oil condition data.
Align drive shafts and couplings and balance fan blades to reduce structural fatigue.
Plan basin cleaning and structural inspection to control corrosion, sediment and biological growth.
Apply water treatment and Legionella risk control measures alongside mechanical maintenance schedules.
Build a preventive maintenance and spares plan supported by thermal performance monitoring.
Who Should Attend
Facilities and utilities engineers responsible for cooling tower operation.
Mechanical maintenance technicians who service fans, gearboxes and fill media.
HVAC and building services engineers managing chiller plant cooling towers.
Reliability engineers building condition monitoring programmes for cooling towers.
Water treatment specialists coordinating with mechanical maintenance teams.
Energy and sustainability managers tracking cooling tower performance and water use.
Course Modules
Select any module to see its sessions and points.
01Cooling Tower Systems and Components
2 sessions · 8 points
Session 1Cooling Tower Types and Thermal Performance
- Compare induced draft, forced draft, crossflow and counterflow cooling tower configurations and their performance traits.
- Interpret approach and range values to assess whether a tower is meeting its design thermal performance.
- Identify the role of fill media, drift eliminators and louvres in heat transfer and water loss control.
- Recognise signs of airflow short-circuiting, fill fouling or nozzle blockage from reduced cooling performance.
Session 2Mechanical Drive Train Components
- Describe fan, gearbox, drive shaft and motor arrangements used in induced and forced draft towers.
- Identify vibration and noise symptoms indicating gearbox wear, fan blade imbalance or bearing degradation.
- Explain the function of variable frequency drives and two-speed motors in fan energy management.
- Assess belt-drive versus direct-drive and gear-drive fan configurations for maintenance and reliability trade-offs.
02Fill Media and Drift Eliminator Maintenance
2 sessions · 8 points
Session 1Fill Media Inspection and Replacement
- Distinguish film fill and splash fill media types and match replacement material to water quality conditions.
- Inspect fill media for scaling, biological fouling, sagging and physical damage during shutdown inspections.
- Plan fill media removal and replacement sequencing to minimise cooling tower downtime.
- Verify fill media spacing and support grid condition to maintain even air and water distribution.
Session 2Drift Eliminators, Nozzles and Distribution Systems
- Inspect and clean drift eliminators to control water droplet carryover and reduce drift loss.
- Check spray nozzle condition and coverage pattern to ensure even water distribution across fill media.
- Assess hot water distribution basin and flow control valves for scaling or debris blockage.
- Replace damaged eliminator blades and nozzle assemblies using manufacturer-approved materials.
03Mechanical Maintenance and Vibration Control
2 sessions · 8 points
Session 1Fan, Gearbox and Bearing Maintenance
- Inspect and service gearbox oil systems, checking for water contamination and correct oil analysis intervals.
- Perform fan blade pitch adjustment and dynamic balancing to reduce vibration and structural fatigue.
- Align drive shafts and couplings between motor, gearbox and fan to manufacturer tolerance.
- Replace fan bearings and mechanical seals following documented lockout and rigging procedures.
Session 2Structural and Basin Maintenance
- Inspect tower structure, casing and fan stack for corrosion, fibreglass degradation or fastener failure.
- Plan basin cleaning and sediment removal to prevent pump suction blockage and biological growth.
- Assess louvre, access door and handrail condition against safety and airflow performance requirements.
- Schedule structural and mechanical inspections around seasonal shutdown windows to limit production impact.
04Water Treatment, Legionella Control and Programme Management
2 sessions · 8 points
Session 1Water Treatment and Legionella Risk Control
- Explain the relationship between cooling tower water treatment, scaling, corrosion and biological growth control.
- Implement Legionella risk control measures including biocide dosing, drift elimination and temperature management.
- Coordinate water treatment sampling and log-keeping with mechanical inspection and cleaning schedules.
- Recognise the maintenance implications of makeup water quality and cycles of concentration control.
Session 2Maintenance Planning and Performance Monitoring
- Develop a preventive maintenance calendar covering fill inspection, gearbox servicing and eliminator cleaning.
- Monitor thermal performance trends to detect fouling or mechanical degradation before capacity loss occurs.
- Plan spares holding for fan blades, gearbox components, fill media and nozzle assemblies.
- Report cooling tower condition, energy use and water consumption to facilities and energy management teams.
What the participant receives
4 course modules
A structured syllabus
8 training sessions
across 5 days
32 detailed points
Applied, detailed content
Accredited attendance certificate
On completing the programme
Complete your registration
We will contact you within one business day to confirm.
Ready to start?
Reserve your seat and start building the skill.