A hand-pushed steam cleaner looks simple because a person moves it. That is exactly where the buying mistake happens: the machine is steaming, heating, holding water and travelling across a floor at the same time, and almost none of that behaviour is visible on a data card. The useful set of questions is therefore not a list of specifications to compare. It is a list of things a supplier has to commit to in writing before the machine arrives, plus a short trial that proves the written answers on your own surface.
Which movement does the machine actually provide?
Start here, because the phrase "mobile steam cleaner" covers two different machines. On the PowerDe product cards the parameter row for the hand-pushed steam cleaning machine records the mode of movement as "Hand push", while other cards in the same range record "Automatic movement" with autonomous driving. Ask which row applies to the unit being quoted, and ask what it means in your building: who pushes it, over what distance, across what threshold, and whether it is ever expected to travel unattended. A machine bought for pushing should not be ordered as a driving unit, and the reverse is a real risk in a busy area.
Then measure the route, not the machine. Take the length and width of the unit from the card - the hand-pushed card lists a box footprint of L1150 x W520 x H1030 mm - and put those numbers against your narrowest doorway, lift, ramp and aisle turn. A footprint that fits a corridor is not the same as a footprint that can be pushed through it while carrying a full water tank.
How is the water tank fed, and is the tank size the working time?
Ask what the tank figure on the card actually describes. The hand-pushed card states a clean water tank of 50 L, and it names the water feed as a tap inlet carrying a 4-point internal-tooth joint. Two separate questions follow. First: what does the site provide at the position where the machine will be used - a tap, a hose, an adapter? The joint type is a physical constraint, so ask in writing whether the fitting shown on the card matches the outlet at your site, or whether you must supply an adapter yourself. Second: tank capacity is not a runtime figure. This card publishes no working duration, so do not let anyone turn litres into elapsed time on a phone call. Ask for working time as a measured result, or agree to close the gap with a timed trial on your own job.
What exactly is being asked of the steam, and is it published or only promised?
Two figures decide what the machine can do, and buyers routinely accept them verbally. Ask for the steam temperature and the working pressure for the unit on the quotation, as numbers, in writing. If a supplier will not commit to them, that is a finding, not a detail. The hand-pushed card names a 4.5 KW semiconductor heating element and describes switching between dry steam and wet steam; it does not publish a steam temperature or a pressure figure, so those become a question rather than an assumption.
Ask the same question about what is not on the card. The dry-steam and wet-steam switching is the stated mode set for this card, while hot-water working appears as a separate mode on other cards in the range. If your job needs a hot-water rinse, ask directly whether the hand-pushed unit being quoted provides it, and ask to see the row that says so. Never assume that a mode present on one PowerDe card is present on another.
Where does the power come from?
The card lists 48 V as the battery working voltage and shows the battery as customer-supplied. That creates three questions you should get answered before ordering, not after: who supplies the battery, who supplies the charger, and what the working supply arrangement is for the exact machine quoted. Then check your own supply - the outlet, its protection and its cable run - against the heater load named on the card. Ask for the electrical requirement of the unit quoted in writing, because the supply figures shown on other cards in the range are not transferable to this one.
What happens when something is wrong, and who is told?
Ask which protection functions are fitted and, more importantly, what each one does when it acts: does it stop heating, stop the pump, or stop the whole machine? Ask the supplier to write the protection functions out in words rather than as a number of items, because a count tells your operator nothing. Ask whether the hand-pushed unit can be pushed and steamed at the same time, or whether movement and steaming are separate steps. Finally, ask what the machine looks like when a fault is present - lamp, sound, shutdown - and who in your team is trained to respond.
What is in the price, and what arrives later?
The card shows a high pressure water gun with nozzle as a fitting row. Ask for a complete accessories list against the exact model and variant quoted, with each item named, and ask what is boxed, what is ordered separately and what is only available later. Ask which nozzles and lances suit your surface, and ask whether the items you are shown are the ones that will be in the crate.
Ask the same question about spare parts and about the person who fixes the machine when it fails, including response time and how a fault is reported. Those are commercial terms, not technical ones, and they are the terms most often left blank on a quotation.
Is your job on the application list at all?
The overview wording on the hand-pushed card covers hospital beds and medical machinery, and the card is the target of the medical equipment steam cleaning entry in the site's keyword table. Treat that as an example on one product card, not as a clearance for your sector. If your work sits outside the wording on the card - food areas, vehicle interiors, machine exteriors - say so in your enquiry and ask the supplier to state plainly whether this machine is presented for that duty. The commercial steam cleaning equipment index on the same site is where several variant cards sit side by side, which makes it easy to read a row from one machine into another; ask the supplier to name the exact card, model and variant they are answering about.
How do you prove the answers on your own floor?
Before anything is signed, arrange one bounded trial on your own surface with a written stop condition. The trial should answer the same questions you asked, but with results: time to reach working steam on a cold start, how the unit is pushed and steamed through the narrowest point on your route, how much water the job actually consumes, what the deposit looks like after one pass, and how long it takes the surface to dry enough to be used again. Write down which figures were published on the card, which were supplied in writing, and which were only said in conversation.
A question list is worth owning in exactly that form. Each answer either lands on a published row of the product card, arrives as a written commitment naming the machine and variant, or is closed by a measurement you made yourself. Anything that lands in none of those three places is still an open question, and a hand-pushed machine is the wrong place to carry an open question onto your floor.
