Start from the soil, not from the kilowatts
Heating power drives steam generation, and steam temperature is what loosens grease, cutting fluid residue and carbon deposits. But the same machine behaves differently on a cold engine bay in an unheated garage and on a range hood in a warm kitchen. Before we book a date, we ask three questions:
- What kind of deposit are you removing — light dust and food soil, weathered grease, or baked-on oil?
- How many cleaning tasks per shift, and how long can the line or bay be idle?
- What supply do you have at the point of use — 220 V single phase, a battery-powered unit, or a fixed water and power station?
The answers decide which machine we bring. A fixed steam cleaning machine such as the PowerDe HW02 is a 220 V, high-temperature, high-pressure unit that switches between dry and wet steam, with an 80 L stainless steel water tank, a 6 kW heater, and published steam figures of 160 °C and 0.8 MPa. That profile suits fixed bays at fuelling and parking sites, where vehicle exterior washing, interior vacuuming and disinfection, and engine-compartment cleaning happen in sequence. A driving-style or hand-pushed model is a different conversation: those mobile active-water machines add a hot-water mode and run on battery, which matters when there is no fixed supply where the work is done.
What we ask you to have ready
A demonstration that runs on our checklist rather than yours produces a polite meeting and no decision. Here is the practical list we send before we travel:
- One real workpiece in its real condition. Not a cleaned sample. If the part leaves the machine line coated in cutting fluid, bring it coated.
- A second, untreated workpiece for before-and-after comparison, so the result can be judged side by side rather than from memory.
- Confirmed supply at the demo point: voltage available at the socket, and whether tap water feed is available or the tank has to be filled manually.
- Access and clearance. For a fixed unit the HW02 footprint is 1,200 × 800 × 1,200 mm including handles; a doorway or lift narrower than that has to be found before the machine arrives, not on the day.
- The people who will run and maintain the machine. Operators give us the objections the purchasing file never records.
How we run the heating-power test
Heating power is only useful as a rate: how fast the unit reaches working temperature, and whether it holds that temperature while steam is being drawn continuously. We therefore structure the session in four timed steps.
1. Cold start, measured from the moment you press the switch
We time the start of the machine at ambient temperature. In a cold workshop or an outdoor bay, warm-up time is the number your shift plan has to absorb, so it is worth measuring in your conditions rather than ours.
2. Dry steam on the hardest deposit
Dry steam carries the heat with very little water, which is what you want on electrical housings, engine bays and surfaces that must not be hosed down. We work the worst item you brought first, while everyone is still watching.
3. Wet steam, and continuous duty
Wet steam adds moisture to lift heavier, dried-on soil. We then keep the trigger pulled for as long as your shift would, and watch whether output stays steady or the unit has to recover. A machine that reaches 160 °C once and then stalls is not the same purchase as one that holds it, and only a long run shows the difference.
4. Water and consumables, counted, not estimated
Tank capacity sets how long the session runs before a refill. The HW02's 80 L tank lets us complete a full vehicle and engine sequence without stopping; a smaller tank changes the working rhythm and should be planned for. We record fills per shift during the trial so that the utility picture is measured rather than assumed.
Reading the result: three things to agree on in the room
At the end of the demonstration we ask the people present to commit to three numbers before they leave:
- Cycle time per unit of work — one bay, one hood, one machine housing — compared with your current method.
- Downtime avoided or created. If cleaning moves from a planned shutdown to a rolling task, that is a production gain, not a cleaning saving, and it belongs in the business case.
- What the steam replaces — chemical detergent, scraping, compressed air, or a second rinse pass.
If the deposit does not clear, we say so on the spot and change the variable that is actually at fault: mode, nozzle distance, pass rate, or whether a fixed unit is simply the wrong form factor for the job. That is the point of a demonstration — to rule out the wrong machine before anyone signs a purchase order.
Safety points we cover in every session
High-temperature, high-pressure steam is a work hazard, not a cleaning convenience, and the training is part of what we deliver. The HW02 page lists leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection; several mobile models carry a comparable set. We still brief operators on personal protection, on never directing the lance at a person, and on isolating the machine before any handling. Where the work touches food preparation or medical areas, the cleaning method also has to satisfy your own hygiene requirements — that review is yours, and we work to it.
When the demonstration should not happen yet
Occasionally we advise postponing. If nobody can tell us the deposit type, if the site cannot offer a safe place to run a steam lance, or if the choice is really between steam cleaning and a different process altogether, a trial will only produce noise. In those cases we start with an application review instead, using the equipment categories on our product pages to narrow the scope first.
If you can supply the workpiece, the supply confirmation and the operators, we will bring the machine, the timings and the comparison parts. Shenzhen PowerDe Automation Precision Equipment also builds customised configurations, so a demonstration that shows the result but not the right size is a normal outcome — and the useful one.
