How should a company record the results of a trial using wet-steam cleaning mode?

A trial is the step between "this machine looks interesting on a datasheet" and "we are willing to put it in front of customers." For wet-steam cleaning, the trial is also the hardest part to judge, because wet steam disappears quickly, the surface looks dry minutes later, and what really decided the result — soil removal, dwell time, water volume, operator effort — is not visible in a before-and-after photo. Recording the trial turns a subjective impression into a purchasing decision you can defend internally and compare across machines.

The guidance below is written for procurement, operations and facilities teams evaluating PowerDe cleaning equipment on their own site, and it works whether you are testing a fixed unit or one of the mobile steam cleaning machines.

1. Record the baseline before the machine is switched on

Half of a good trial record is written before the trial starts. Capture the state you are trying to change, in the form you will still recognise in three months:

• The exact surface and soil: engine bay, range hood, machine guard, floor next to the press — and whether the deposit is grease, cutting fluid, sugar residue, road film or mixed dust.
• The previous method and its real cost: detergent used, water volume, labour hours, downtime, and how often the task repeats per week or month.
• Constraints that will decide the purchase: available power supply, distance from the power source to the work area, whether drainage is available, and where operators must not walk or park.
• Photographs taken from a fixed position with the same lighting and distance, so the after-shot is comparable.

Without this baseline, any later number is just an opinion. With it, the trial measures a change instead of a machine.

2. Log machine setup as configured, not as marketed

Wet steam and dry steam behave differently on the same surface, so record which mode the machine was actually set to, and how it was connected. Model names and figures on product pages are sometimes inconsistent with the parameter table, so write down what you saw on the machine rather than what the brochure says; ask the manufacturer to confirm any number you intend to quote internally.

• Mode used: wet steam or dry steam, and whether the machine was allowed to reach a stable state before the first pass.
• Supply arrangement: tank volume, whether the inlet was fed from tap water, and how long the trial ran before a refill was needed.
• Nozzle, lance and distance to the surface — the variables operators change first, and the ones most often left out of the record.
• Power source available at the site, and whether a battery-powered or mains-powered unit was used.

For example, the fixed Fixed Steam Cleaning Machine PowerDe HW02 is listed as a 220 V machine that switches between dry and wet steam with a built-in vacuum function, and it is described for vehicle exterior cleaning at fuelling stations and parking yards, interior work and engine-compartment cleaning. The hand-pushed PowerDe HMW3 is listed with dry- and wet-steam modes for cleaning and disinfecting hospital beds and medical machinery. Record which one you tested and against what task, because results from one of these machines do not transfer to the other's use case.

3. Measure the task, not the demonstration

Supplier demonstrations tend to show one clean panel for five minutes. A trial for purchasing purposes should run the job the way it really runs. For each pass, record:

• Time per unit of work: minutes per vehicle, per hood, per machine, per square metre — plus setup, refill and clean-up time.
• Number of passes needed before the soil released, and whether the same result would previously have needed detergent, scrubbing or a second machine.
• Water used per task, and whether run-off was manageable on that surface or required a drain, mat or collection step.
• What the operator did differently, in the operator's own words, captured immediately after the run while it is still accurate.

A trial that records only "clean" or "not clean" cannot answer the question your finance reviewer will ask. A trial that records minutes, passes and litres can.

4. Record the risks the way the machine handles them

Wet steam brings three practical concerns to any site: hot surfaces, moisture where it should not go, and electrical supply in wet areas. Product pages for these machines describe protective features such as leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, but your record should describe behaviour, not marketing claims:

• Did any protection function stop the run, and what did the operator do next?
• Did moisture reach sensitive areas — electronics, bearings, belts, electrical enclosures — and was a lower-moisture mode or shorter dwell time enough?
• Was the supply cable long enough for the real working distance, or was an extension introduced during the trial?
• Was personal protective equipment needed for the task as performed, and did operators wear it?

5. Score the trial against the decision you actually have to make

Close the record with a comparison table against the baseline from step 1, using the criteria that matter at your site rather than a generic scorecard:

Then write one sentence of conclusion per scenario: which surface the machine suits, which it does not, and what would need to change before it is used routinely. A trial that ends with "suitable for engine bays, not suitable for the CNC enclosure without a drier" is more useful than a single overall verdict.

6. Ask the supplier for the missing pieces in writing

Trials usually expose questions a product page does not answer: run time between refills or charges, hose and lance lengths, which accessory fits which surface, spare-part supply, and how the machine is serviced locally. Send your trial record with those questions and keep the written answer next to the record; it is what procurement will need later, and it is also how requirements for customized steam cleaning equipment get specified properly when no standard model matches your site.

A wet-steam trial that is not recorded tends to end as a demonstration people remember fondly and never buy. A recorded trial, with baseline figures, mode settings, per-task measurements and a written answer from the supplier, becomes a decision document — and if the machine is not right for the job, that is a useful finding too, worth as much as a purchase.