Why the site decides before the machine does
A fixed steam cleaning machine has one defining feature that no line in a specification table can soften: it stays where you put it. Everything it does happens inside the reach of its hose, at the point where you connect power and water, and drains to wherever the building allows. Assessing the site requirements therefore means answering three questions about the place, not the product. Can the work reach the machine? Can the building supply what the machine needs? Can the water that leaves the surface go somewhere acceptable? A site that answers all three supports a fixed installation. A site that fails any one of them needs a different form of machine, or a different layout, and it is far cheaper to learn that before delivery than after.
The steps below take you from that first form question to a one-page site record you can send to a supplier, using the published figures for one fixed model, the PowerDe HW02, as a worked example throughout.
Start with whether the work comes to the machine
The first requirement is not electrical or plumbing. It is a question about how your work actually moves, and it belongs ahead of every specification you might compare. The working rule is short: if the work converges on one point, a fixed machine is the right form; if the work wanders, carry the water and the power with it. A fixed wash bay where vehicles arrive, park, and leave is the textbook case for a fixed machine. Several dispersed bays, several sites, or machines that must follow vehicles between them are the textbook cases for a mobile one.
The fixed steam cleaning machine listing is honest about which case it was written for. It names vehicle exterior cleaning at gas stations and parking lots, interior vacuuming and disinfection, and engine-compartment cleaning, and it lists a tap-water inlet rather than a large carried tank. Those details describe a machine that stands at a fixed wash point and serves vehicles that come to it. To test your own operation, write down where the work actually happened over the last week. If it clustered within one hose length of a single position that could hold water and power, a fixed machine is a serious option. If it spread across bays, floors, or sites, or if the vehicle cannot move and the machine must, then the fixed form will fail in daily use no matter how good the numbers look on paper. Choosing the wrong form is the most expensive mistake in this category, and no length of hose repairs it afterwards.
Measure reach before you choose a position
The hose is the working radius, so reach is measured, not estimated. Mark the position the machine will actually occupy, the one you can defend after delivery, and measure from that position to each task you intend to assign it: the far side of a vehicle, the lower skirt, the roof line, the engine bay with the hood open, the interior with doors open. The HW02 listing does not publish hose or lance lengths, so request those figures in writing before installation rather than discovering them on the day. A task that falls outside the radius is an installation problem with three possible answers, move the position, drop the task, or change the method for that task. Teams that skip this step usually find out on the installation evening that the final stretch of every vehicle were never inside the machine's reach.
Write the assigned tasks and their measured distances on the same sheet you will send to the supplier. That sheet, not a brochure, is what lets a supplier tell you whether the machine fits the site or whether you are both about to waste a delivery.
The four building services the machine will ask for
Electrical. The listing gives a working voltage of 220 V and 6 kW of heating power. A qualified electrician should confirm a suitably dedicated circuit at the chosen position before delivery, because running an extension from a general-purpose socket is how a fixed machine ends up tripping protection at the busiest moment of the day. The machine's own protections do not take this job over, a point covered in more detail below.
Water. The listing describes a tap-water inlet and an 80-liter SUS304 stainless steel tank. A fixed installation should be plumbed or hosed to a supply at the machine's position, which removes the carrying of water from the working day; the tank is a buffer that lengthens each run, not a reason to skip the connection. Confirm the inlet thread standard and the available pressure and flow in writing, and if the position is outdoors in a freezing climate, ask the manufacturer for the drain-down steps and the storage expectation before the first winter.
Drainage. Steam and hot water leave a surface as warm water carrying whatever was on it. Where that water goes is a site question: the floor must slope or be squeegeed toward a defined drain, and oily or greasy water is governed by your local drainage authority, not by the machine's specification. Close that question with whoever owns the drainage on your site before installation, and note the answer on your site record.
Environment. A machine standing indoors needs ventilation, because steam and heat go into the room as well as onto the surface. The position needs enough floor around it for an operator to move, a floor that drains rather than ponds, and lighting that allows a low-angle check afterwards. Keep the position out of vehicle paths and escape routes, and make sure nobody who is not operating the machine stands in the steam plume.
Read the specification as a list of demands, not only as performance
The same numbers that describe what the machine can do also describe what it will ask of your building, and reading them that way is the core skill in this assessment. The published 160 degrees C steam temperature and 0.8 MPa vapor pressure are two readings of one saturated state, so ask whether the figures were taken at the boiler end or at the nozzle end; a long hose changes what arrives at the surface, and the answer changes how you plan distances and passes. The 6 kW heater and the 80-liter tank describe your working cycle rather than an area rate: how long one tank supports, how long a cold start takes to reach working condition, and how long the machine needs after refilling before it is useful again. None of those three times appear on the listing, so request them in writing or measure them yourself on the first day and plan shifts around what you measured.
Treat every figure as a capability pointed at your surfaces, not a promise about them. The published values describe what the machine can produce; they do not describe how your paint, decals, plastics, or engine-bay components respond. That distinction is the difference between a specification and a claim, and a supplier who is comfortable with it is usually a supplier worth continuing with.
What the built-in protections do not cover
The HW02 listing describes leakage, short-circuit, high-temperature, high-voltage and water-shortage protection. Those are real and useful, and they protect the machine. They do not protect the building circuit, which your electrician still confirms. They do not protect the operator, whose gloves, eye protection and trigger discipline are yours to specify and train. They do not protect the floor, the paintwork nearby, or the vehicle standing next to the position. And the water-shortage protection is worth reading as a planning signal rather than a fault: an empty tank is a scheduled event in a fixed installation, and where the refill happens, and who walks the hose, belongs in the routine you write before the machine arrives.
Check the delivery route and the final position together
The listing gives overall dimensions of 1,200 x 800 x 1,200 mm including handles, which is the number to carry when you walk the route with a tape measure. Doorways, corridors, lifts, ramps and turning space should be measured against those dimensions with the handles counted, not against the cabinet alone. Then look at the final position as a place a person will work every day: clearance to open connections and to reach the tank, no trip hazards from a hose that must cross a walkway, no standing water in front of the machine, and a wall or barrier behind it rather than a busy aisle. A position that works on a floor plan but not at seven in the morning is the most common quiet failure in fixed installations.
Put the answers on one page and test them before you order
Before you sign anything, write down what you measured and what you still need. The list is short: the assigned tasks and their measured distances from the marked position; the electrical check and the name of the electrician who will sign it; the water connection point, thread standard and flow; the drainage route and the person who owns the oily-water question; the ventilation and frost plan; the numbers the listing does not publish, which for this model include hose and lance lengths, preheat time, run time per tank, recovery after refilling, noise figures, spares and warranty terms; and a written confirmation from the supplier covering the surfaces and tasks you expect, since the PowerDe HW02 fixed steam cleaning machine listing names vehicle exterior, interior vacuuming and disinfection, and engine-compartment work, and anything outside that list should be confirmed rather than assumed.
Then run one day at the real position with two representative vehicles. Write your acceptance wording before the machine starts, in observable terms such as what a raking light shows on a painted panel, what an agreed white cloth leaves behind, and whether any water is found in door sills, lamp housings or window channels after the vehicle is dry. Time the whole cycle, including refilling, reheating and drying, and photograph the same reference points before and after. Check bare metal again the next morning for flash rust and check the seams where water moved overnight. Send that record, not a summary, to the supplier.
A supplier who answers your measurements is quoting your site. A supplier who recites the brochure is quoting a machine you already have. If the record shows that the work cannot be gathered at one point, or that the building cannot supply water, power and drainage at the position you can defend, the honest conclusion is not a larger machine but a different form; the same PowerDe range lists mobile driving-style machines, offered with and without a battery, for indoor garages and narrow outdoor parking spaces, and choosing between the two is a question about where the work happens. If you would like the missing figures and a written view on your own layout, you can contact PowerDe with your task list and site measurements.
