1. What is under the tiles, and can water reach it?
Steam and hot water under pressure will find every gap in a floor. The first question is therefore not about the machine at all: it is whether the bed and the perimeter are sealed. If tiles are hollow-sounding, if the grout is cracked along a wall junction, or if the floor falls toward a channel drain that passes under a cold store wall, high-pressure water can travel somewhere the cleaning crew never sees. Ask the flooring contractor to confirm the condition of the bed and the state of the grout before a pressure method is chosen. Where the floor is old and the bed is questionable, start with a smaller area, or use a lower-pressure method and review the result after a month.
2. What is actually on the floor — oil, starch, or both?
Kitchen floors carry two different deposits, and they behave differently. Grease from fryers, griddles and grill ranges forms a film that cold water and a mop will spread rather than lift. Starchy spillage from pasta, rice and sauces dries into a crust that brushes off easily but re-hardens each night. Heat is what releases the greasy film, which is why central kitchen degreasing work is usually a hot-water or steam job rather than a chemical-only one. Walk the line at the end of a session and name the deposits zone by zone — under the fryer line, in front of the pass, in the pot wash bay, along the aisle to the stores. If the deposit is mostly grease, the specification should start with heated modes. If it is mostly starch, chemical dwell plus a rinse may be enough, and the floor does not need the same machine as the fryer line.
3. Can the room be closed, and for how long?
Floors are the one surface in a kitchen that cannot be cleaned while the room is working, and steam makes the constraint worse: vapour hangs in the air, sight lines drop, and every cold surface in the room picks up condensate that has to be dried. The question to answer is what the site can actually give you. A 45-minute window after service suits a small kitchen. A servery that runs breakfast, lunch and dinner has no such window, and a floor method that needs an hour of vapour in the room will be cut short every time and quietly left half done. Write down the real window, then choose a method that fits inside it, including the time the crew needs to dry the floor before the first prep shift walks on it.
4. Where does the water come from, and where does it go?
Three answers decide the machine type. A fixed unit plumbed to a tap supply beside the line keeps hoses out of the aisle and suits a kitchen where the cooking line is in one place. The Fixed Steam Cleaning Machine PowerDe HW02 page lists a tap-water inlet with a 4-point internal-tooth joint, an 80 L SUS304 tank, a 220 V working voltage, 6 kW heating power, 160° steam temperature and 0.8 MPa vapour pressure — figures a buyer can compare against the services on site. A mobile unit from the Cleaning Equipment Series, with battery options, suits a site with several servery areas sharing one crew, or a floor with no convenient water point. A kitchen with no water and no drainage near the line is a different problem, and that constraint should go to the supplier in writing rather than being discovered after delivery.
Drainage is the half that gets missed. Greasy run-off from a floor clean has to reach the site's grease interceptor, not a prep-area sink or a surface drain that feeds the foul system directly. Ask who checks the interceptor and how often it is emptied, because an interceptor already near capacity turns a compliant clean into flooding across the room. If the kitchen has no gully in the right place, that is a finding about the building, not about the machine.
5. What has to be protected before steam enters the room?
Steam is not confined to the floor. Before the wand is opened, the plan should list what comes out of the room or under covers: dry goods, packaging, open chemicals, anything on open shelving within reach of vapour. It should also list what must not be sprayed directly — the underside and terminals of any gas appliance, control knobs and their bezels, thermostats and temperature probes, indicator lights, terminal enclosures, and electrical sockets at floor level. On an insulated floor with cold joints, condensation on a socket box is a fault waiting to happen. Where the manufacturer's manual for a cooker or a fridge warns against water washing, that warning belongs in the cleaning plan as written instruction to wipe around, not left to a crew's judgement at 23:00.
6. Is the floor slippery when wet, and who owns that risk?
Ask the flooring supplier for the slip resistance of the tile when wet, and for the state of that value after years of degreasing. A floor that passed a slip test when new may not pass after a decade of hot cleaning, and a steam method changes both the wet profile and the residue left on the surface. Whatever method is chosen, the plan should record what the floor looks like when it is clean: no visible oil film along the aisle, no residue in the grout lines, no pooled water at the drain, and a surface dry enough to walk on within a stated time. Sign the area during the clean and keep it signed until it is dry, because most kitchen floor injuries happen on a floor a crew believes is finished.
7. Who does the work, and how long does it take them?
Every floor method has to be run by the people on the late shift. Name a duration for the worst zone and the number of people needed, and time it during a trial rather than estimating it in a meeting. Write the working distance, the dwell on a greased area and the number of passes into the method, so a second shift can repeat the result. A method that only works when one experienced person holds the wand is not a method; it is a habit, and it disappears the week that person leaves.
8. Who looks after the machine, and what happens when it stops heating?
A floor plan that depends on a machine has to include that machine's upkeep. Record the service interval, the parts worth holding — seals, nozzles, hoses, brushes — and the number to call. Note that the HW02's listed protections (leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion) exist to stop a fault, not to be reset repeatedly during a shift. Where the water supply is hard, scale collects inside a heater and output falls long before the unit actually fails, so write down the descaling routine and who owns it. Ask the supplier how service is handled for a site that cannot lose the machine for a week.
9. What does a trial have to prove before you buy?
Ask for the trial on your floor, at your worst zone, at the hour you would really clean. Set three checks and write them down beforehand: does the method lift the deposit without heavy scrubbing afterwards; is the floor dry enough for the next shift inside the window you have; and does the crew finish the job in the time they actually have. Any machine that passes those three is worth pricing. Any machine that passes only the first one will not survive the year.
10. Send the room, not the catalogue
Whether a steam cleaner suits a kitchen washdown floor is answered by the room, not by the brochure. Shenzhen PowerDe Automation Precision Equipment publishes parameters for each machine in the Cleaning Equipment Series, and customized steam cleaning equipment can be specified against your floor layout, drainage and duty cycle. Send photographs of the worst deposits, a note of the floor build-up, and the cleaning window you can actually give the crew to the contact page, and ask for a method matched to the kitchen rather than a model recommendation.
