Construction completion is not the same as operational readiness. A commercial pool that passes its final build inspection can still fail under real bather load due to undersized plant, unbalanced hydraulics, or water chemistry instability at volume. Our 48-hour continuous-run commissioning test simulates peak operational load before handover — catching problems when we can fix them, not three months into an operator's first busy season.
What 48-Hour Testing Actually Means
The test runs the pool plant continuously for 48 hours at full design load, with water chemistry monitored, pump flow rates logged, and filter pressure drops recorded. We simulate peak bather load by intermittent dosing of a standardised organic challenge (representative of swimmer contaminants), testing how the sanitisation plant responds.
For pools with multiple plant circuits — main pool, spa, children's pool — each is tested independently and in combined operation.
What We Measure
The critical metrics:
- Filtration turnover time vs design specification
- Free chlorine stability under challenge dosing
- Combined chlorine (chloramine) formation rate
- Plant room vibration and noise at full load
- Pump amperage stability
- Heater temperature differential under continuous demand
- Pressure drop across filter media
- Overflow channel flow uniformity
What Failure Looks Like
Common commissioning failures we catch: chlorine demand exceeding dosing capacity (undersized dosing pump), filter backwash cycles triggering too frequently (undersized filter), heat exchangers unable to maintain setpoint under challenge (undersized heating), or plant room noise breaching design target.
These are all fixable at commissioning — but only because we test under realistic conditions rather than just verifying installation.
Documentation and Handover
Every commissioning test generates a documented report: hourly readings for all metrics, challenge-dosing response curves, plant room noise readings, and sign-off by the commissioning engineer. This report forms part of the client handover pack and becomes the baseline for future operational troubleshooting.
Conclusion
48-hour commissioning testing is standard on every commercial pool we deliver — municipal, hotel, institutional, or estate. The cost is built into our fixed-sum contracts, not treated as an optional extra.