Cloud kitchens, ghost kitchens and delivery-only brands cook on small, dense lines that have to be back in service quickly. That puts whoever owns the cleaning schedule in a bind: the cooking equipment is electrical, packed against walls, and surrounded by gas lines and control panels — yet grease still has to come off before it turns into a fire risk or an audit finding. Steam is tempting here because it works with little water and no detergent. Before any machine is switched on in a space like that, though, the trial needs as much preparation as the equipment does. Below is a test plan you can run yourself, together with the questions to settle with your suppliers first.
Before the first jet of steam: three things to close out
The usual way a pilot goes wrong is starting with the machine instead of the groundwork. Work through these items and write the answers down, because they decide what you are allowed to test and what you will be able to install.
- Utility check. Match the machine's requirements against what the kitchen actually provides: socket rating, a dedicated circuit, a water inlet, and somewhere the wash water can go. A fixed steam cleaning machine such as PowerDe's HW02 is a floor-standing, 220 V unit, so it needs a real position of its own — not an extension lead shared with a griddle.
- A written procedure per machine. One page each for every piece of cooking equipment in the test: what gets powered down, what gets covered, which surfaces take steam and which only get wiped, and how long the operator is expected to spend. A pilot without a written method produces opinions, not evidence.
- Suitability and warranty in writing. Heat and pressure change the risk picture, and warranty wording on cleaning electrical cooking appliances differs between makers. Ask your catering-equipment supplier which cleaning methods they permit on your hoods, griddles and fryers, and ask the steam supplier which surfaces their machine is intended for and what protections it provides. PowerDe's HW02 page, for example, lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, and states 6 kW heating power, 160 °C steam temperature and 0.8 MPa vapour pressure. Treat those as figures recorded from that product page for that unit, and confirm them for the configuration you are actually quoted — they are not a clearance for your kitchen.
Fixed or portable for a rented kitchen
In a shared, leased unit, a machine that has to be plumbed in permanently can be the wrong starting point even if it cleans well: tenants often cannot install a fixed water and drainage position, and a floor-standing cabinet takes space the line needs for prep. A portable machine is easier to trial because it moves to the equipment and needs one position to park in. Either way, check power source, tank capacity, hose length and runtime against your shift before the test — those decide whether one operator finishes a line or spends the shift refilling.
Check the steam mode as well. Dry and wet steam cleaners are sold as one machine with both settings, and that matters here: dry steam carries less moisture and is the safer starting point near electrical assemblies, while wet steam carries more water and suits loose, soft residue. Switching between the two lets you match the mode to the surface instead of buying a machine per job.
Test one machine, not the whole line
Pick one representative, low-risk item — a section of exhaust-hood filter, or the outside housing of a griddle — and treat it as your test cell. Then work in this order:
- Isolate the energy. Switch the equipment off at the isolator, tag it if your site uses lockout, close the gas supply to that section, and let hot surfaces cool. Steam on a hot cooking surface flashes into a cloud that blocks your vision and scalds easily.
- Cover what must stay dry. Motors, control panels, terminal boxes and gas connections get covered with something suitable for the job. Steam condenses on everything nearby; the cover's purpose is to decide where that condensate lands.
- Sort out the floor before you start. Have drainage ready, or a mop and a bucket plan. Standing water in a kitchen aisle is an immediate slip hazard, and it carries loosened grease into drains you did not plan to load.
- Ventilate and dress for it. Run the extraction if the space has it, and wear gloves, eye protection and closed footwear that covers the ankle. Steam burns faster than hot water at the same temperature.
- Start far away, on the dry mode. Begin at the widest nozzle distance the machine allows, watch how the grease responds, then move closer or change mode. Keep the jet off seals, bearings and electrical parts.
- Wipe, dry, then re-energise. Loosened grease has to be lifted off with a cloth or squeegee. Leaving it to air dry only moves the problem somewhere else.
Measure the pilot or you learn nothing
Record the same small set of items each session so the sessions compare:
- operator, shift, and cleaning time against the method you use today
- whether the surface came up clean on the first pass, the second, or not at all
- water used, plus any refill or drainage trouble
- any damage, water ingress, tripped protection or fault afterwards
- whether the machine reached the area without moving other equipment
Run it on at least two shifts and keep photos of the same surfaces. One good session proves the machine works; two or three tell you whether it works with your staff, on your hours, in your layout.
What a failed pilot usually means
Failures are usually a mismatch rather than a defect. If the operator cannot finish a line in the time available, tank size, hose length or runtime is too small for the shift. If surfaces are still greasy, the deposit is too thick for steam alone and needs wiping first. If water keeps ending up where it should not, the mode or the covers are wrong. And if your catering-equipment supplier objects to the method at any point, stop and settle it in writing before going further — that question outranks cleaning speed.
If the pilot passes, take your numbers to the steam supplier and ask them to specify model, mode and accessories for your equipment list, and to confirm service and spare parts in your area — start from the contact page with your equipment register and photos of your worst surfaces. If it fails, the numbers you wrote down are what make the second attempt a new test instead of a repeat.
