A fixed steam cleaning machine is not a portable unit you wheel out once a quarter. It is installed at a washing bay or cleaning station, connected to utilities, and expected to run through a full shift. That difference is why the buyer conversation looks different from a pressure-washer quotation. Before you compare quotations, here are the questions that decide whether the machine fits your site, your operators and your workload.
Where will the machine be installed, and what does that site already provide?
Fixed equipment lives or dies on the utilities beside it. Ask your supplier to confirm the required supply voltage, the water connection, and the floor space before the unit ships. The fixed steam cleaning machine listed by PowerDe (model HW02) is documented with a 220 V working voltage, a tap-water inlet with a 4-point internal-tooth joint, and overall dimensions of 1,200 × 800 × 1,200 mm including handles. Those three facts decide most of the installation work: whether the bay has the right socket, whether a water line is close enough, and whether the machine can park without blocking traffic.
Write down what the bay offers today and send that to the supplier. A vendor who answers with a wiring and plumbing checklist is a better prospect than one who quotes from a price sheet alone.
What exactly does the water inlet need, and how is the tank supplied?
Ask whether the machine runs on mains tap water, needs a softener, or expects a dedicated tank fill. The HW02 page specifies a tap-water inlet, and the tank is listed as an 80 L SUS304 vessel. Two follow-up questions matter for procurement: how often the tank must be refilled during continuous work, and whether the water quality at your site falls inside what the manufacturer will accept in warranty. Scale forms in hard water; that is the most common way a steam machine quietly loses performance. If your site has hard water, ask the supplier in writing which treatment they require.
What steam conditions are actually published, and what do they cover?
Steam cleaning results depend on temperature, pressure and the dry/wet balance, not on the word "steam" alone. Request the published steam temperature, vapor pressure, heating power, and whether the machine offers both dry and wet steam. For reference, the HW02 detail page lists 160 °C steam temperature, 0.8 MPa vapor pressure, 6 kW heating power, and a dry/wet steam switch alongside a vacuum function. Take these figures from the manufacturer's own parameter table rather than from marketing copy, and check that the numbers you are comparing across suppliers are measured the same way.
Be careful with claims that a machine "cleans everything". Ask which surfaces and which soils the vendor has actually worked on. The PowerDe HW02 page names vehicle exterior cleaning at service stations and car parks, interior vacuuming and disinfection, and engine-compartment cleaning. It does not present the unit as a universal industrial degreaser. A supplier that states its limits clearly is usually the one whose machine will perform as promised.
Which protections are built in, and which ones do your operators need?
A fixed machine is used by many different hands over several years, so electrical and thermal safeguards belong in the specification. The HW02 documentation lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, together with high-voltage-explosion protection. Ask the supplier which of these are standard and which are options, and request the operating procedure for each alarm. When the machine is installed in a public area such as a forecourt, these protections are also part of your safety case for site insurers.
How does the machine fit into the workflow of a fixed bay?
Stationary equipment should shorten the cycle, not add a step. Ask for a walk-through of a typical job: how the operator selects dry or wet steam, how the lance and nozzle change between a paint surface and an engine bay, and how long the machine needs between jobs. For a site where the cleaning point is fixed — a wash bay, a depot, a service station — the PowerDe cleaning equipment range also includes driving-style and hand-pushed units, so it is worth asking whether a fixed machine or a mobile unit suits your layout better. Some sites need a fixed installation for volume; others need the mobility of a hand-pushed or driving-style machine and lose nothing by choosing it.
What is the supplier's role: manufacturer, integrator or reseller?
Fixed installations usually need adaptation — a different hose length, a wall mount, a control interface, a spare-parts stock. Shenzhen PowerDe Automation Precision Equipment presents itself as a manufacturer of intelligent cleaning equipment with in-house R&D, manufacturing, system integration and customization, which is the kind of supplier you want when the standard specification does not match your bay. Ask who writes the firmware, who builds the heating assembly, and where spare nozzles, seals and tanks come from three years from now.
What will the machine cost to keep running?
Move the conversation from purchase price to cost per cleaned vehicle or per shift. The inputs are power, water, consumable nozzles and seals, service intervals, and downtime. Ask for the service schedule and the price of the wear parts before you sign. A machine with published parameters and a documented service plan is easier to budget than one whose figures only exist in a salesperson's head.
What documentation comes with the machine?
For a fixed installation, the paperwork is part of the product. Request the parameter sheet, the installation requirements, the operating and maintenance manual, and the protection functions in writing. Compare it against the specification in your purchase order line by line. Where the site copy and the parameter table disagree on a model name or a figure, get the correct value confirmed by the manufacturer before it is printed on a requisition.
A shortlist worth sending to suppliers
If you want one question that sorts the useful vendors from the rest, send this: "Our bay has [voltage], [water supply], [space], and we clean [surface/soil] at [volume] per shift. Confirm in writing which machine, which published parameters, which protections and which installation work that needs." Suppliers who answer precisely are the ones who have done fixed installations before.
Fixed steam cleaning equipment is a site decision more than a product decision. Start from your own utilities, workload and target soils, then demand the published numbers and protection list from the maker. That sequence is how a high-pressure steam cleaning machine becomes an asset instead of an expensive box in the corner of the yard.
