Cooling-tower thermal performance, drift, fill and fan anomalies
Use this when cooling-tower thermal performance, drift, fill and fan anomalies is observed but the cause remains unclear. The diagnostic checks measurement and sampling, operating changes, issue location, and key evidence before suggesting likely causes and the next useful check.
First time here? Start with this
You do not need every data point before you begin
The system asks one discriminating question at a time and updates the candidate causes on the right. Answer from current facts; choose unknown or defer a question when the evidence is not available.
- 1
Confirm the issue
Check whether the symptom is reproducible and whether the measurement or observation is reliable.
- 2
Narrow the causes
Continue through operating changes, issue location, and available inspection results.
- 3
Read the live result
Candidate causes, support, counter-evidence, conflicts, and next actions update as you answer.
This tool analyzes information you already have. It does not insert a safety screen or use safety status to stop the diagnosis. If an alarm, leak, or injury is happening now, follow the site emergency procedure directly.
Automatic troubleshooting · Selections are not uploaded
Only one question is shown at a time. Answer from current facts or defer an unknown item. Possible causes and next checks update on the right as you answer.
- 1Data validity
- 2Operating changes
- 3Issue location
- 4Further confirmation
Question progress
0/33
- Answered
- 0
- To confirm
- 33
- Clues found
- 0
Load a test scenario
Next question
Phase 1 · Data validity
What is the status of tower type, cell, model, rating point, certification, and modification records?
The system asks the question most useful for separating possible causes. Unknown or deferred items are not treated as the opposite conclusion.
I have more test or inspection resultsOptionalAdd laboratory analysis, normalized calculations, or checks completed by trained personnel when available. These fields are optional.
View rule sources (17)Standards, regulations, OEM material, and peer-reviewed literature used to audit the diagnostic logic. You do not need to read them before starting.
Each rule cites material directly relevant to its judgment. Current OEM and site procedures remain controlling.
- A-consensus-standard-current-reaffirmed · ASME · 2023ASME PTC 23-2003 (R2023) Atmospheric Water Cooling Equipment
- A-industry-test-code-guide · Cooling Technology Institute · 2022CTI Acceptance Test Code for Cooling Towers / ATC-105 preparation guide
- A-industry-certification-current · Cooling Technology Institute · 2026CTI Standard 201 Thermal Performance Certification
- A-industry-testing-current · Cooling Technology Institute · 2026CTI Certification Testing — Thermal, Drift and Sound Testing
- A-international-standard-withdrawn-legacy · ISO · 2014ISO 16345:2014 Water-cooling towers — Testing and rating of thermal performance
- A-international-standard-current-under-revision · ISO · 2017ISO 5801:2017 Fans — Performance testing using standardized airways
- A-international-standard-current-under-review · ISO · 2003ISO 14694:2003 Industrial fans — Balance quality and vibration levels
- A-industry-standard-current · AMCA International · 2020ANSI/AMCA Standard 204-20 Balance Quality and Vibration Levels for Fans
- A-industry-standard-current-with-erratum · AMCA International · 2016ANSI/AMCA 210-16 / ANSI/ASHRAE 51-16 Laboratory Methods of Testing Fans
- A-government-guide-current · US DOE · 2026DOE FEMP Operations and Maintenance Best Practices Guide
- A-government-guide · US EPA · 2017EPA Water Efficiency Management Guide — Mechanical Systems
- A-government-health-current · CDC · 2025CDC Control Toolkit — Cooling Towers
- A-government-safety-current · US OSHA · 2026OSHA Legionellosis Control and Prevention
- A-government-safety-current · US OSHA · 2026OSHA Control of Hazardous Energy
- A-international-standard-current · ISO · 2017ISO/IEC 17025:2017 Testing and calibration laboratories
- A-international-standard-current-under-review · ISO · 2024ISO 5667-3:2024 Water sample preservation and handling
- A-international-standard-current · ISO · 2023ISO 50006:2023 Energy performance indicators and baselines