Which stovetops you are cleaning decides the check list
A commercial cooking line is rarely one appliance. It is a gas range with lift-off tops and exposed burner ports, a built-in electric hob with a glass-ceramic surface, a flat griddle, and perhaps a deep fryer bolted into the same bank. Each one answers a different question when a steam lance passes over it. Gas units carry ignition electrodes, flame sensors, burner valves and gas-way openings; a jet aimed into those leaves a wet ignition path behind it. Sealed electric units are the opposite: the glass itself is not the problem, but laminated trim, printed fascia panels, decals and the seal line at the edge of the glass will lift if water is driven into them.
Before anything else, write one line per unit: gas or electric, freestanding or built in, which parts lift off, which openings are exposed, and what the appliance manufacturer's own cleaning instruction says about its shell. That page, not a machine brochure, governs what you may do to the appliance. Where an opening cannot be cleared or covered, that unit moves out of scope or waits for a different method. When a quotation for steam work arrives, the number of units and their construction are the first thing a supplier needs, because they decide which mode and which accessories make sense.
Isolation and sign-off before the first pass
The most consequential check is not about steam at all; it is about what is still live when the steam arrives. For a gas line that means the gas is shut at the isolation valve, the appliance is switched off at its isolator, and somebody holds the key and signs the board. Reignition after a wash is a real failure: an electrode or flame sensor that is still damp will click without lighting, unburnt gas accumulates, and a delayed light is a serious event. Relight therefore belongs at the end of the sequence, only on appliances that are demonstrably dry at the ignition path, and never on the same shift as the wash unless the manufacturer's instruction allows it.
Electric units need their own isolation, and so does the extraction that sits above the line. Steam in a kitchen is a hot, wet fog; a fan running over an open line drives it into the hood face, the filters and the duct above. Switch the extraction off for the wash, and keep it off until the surfaces and the floor below are dry. Then write down, in the same note, who turned each item off and who is allowed to turn it back on. A kitchen with five people and no named owner of the isolation is a kitchen where the gas comes back on while someone is still standing over an open burner.
What has to stay dry, and what gets covered
Make the exclusion list before you wash, not while you wash. On a typical stove line it covers: ignition electrodes and flame sensors; burner ports and the gas way behind them; knob spindles and the switch housings under them; thermostat and timer bodies; the wiring channel under the top; the seal line at the edge of a glass-ceramic surface; laminated trim, decals and printed fascia; the insulation behind a door panel; and any bearing or bushing that has no seal. Each of those is either shielded with something that can be removed again, or it is deliberately left out of the jet's path.
This is also where appliance condition matters more than steam itself. Cracked glass, a lifted edge, a missing knob, a seal that has already perished: steam will find the fault and make it worse. Note those units before the trial and treat them differently. A brief for a busy production kitchen that skips the exclusion column loses exactly the appliances that were already fragile.
Operator protection and how the lance is held
Steam does its damage in the first centimetres from the nozzle. The operator needs insulating gloves that cover the wrist, a face or eye shield, an apron or sleeves that shed water, and footwear that grips a wet tile floor. A lance with a trigger that closes when the hand releases is worth asking for; a lance that stays open until you twist something is a hazard in a tight kitchen where someone else is walking past.
Then the working rules: never jet at a joint, a seam or an opening; never jet downward into a drip tray that has not been emptied; keep a stand-off distance rather than pressing the nozzle against the surface; keep the lance moving instead of holding it on one spot; work top down and from the clean end of the line to the dirty end so run-off does not cross finished work. Route the hose overhead or along the wall, not across the walkway, and agree a call-out before anyone moves the lance toward a colleague. Two people on a kitchen steam job is not padding; it is how a scald or a slipped floor gets someone to react instead of improvise.
Matching the machine setting to the surface, not to the brochure
Two different decisions are hiding in that sentence. One is the deposit: fresh splatter lifts easily, while polymerised grease that has been baked on repeatedly needs heat and dwell before it will come off. The other is the surface: an open frame and a bare casting tolerate a wetter, more aggressive pass; a fascia with controls and a laminated edge wants the drier setting and more distance. Machines that switch between dry steam, wet steam and hot water are useful precisely because the operator can make that choice per metre of the line rather than choosing one setting for the whole shift.
Treat any figure a supplier gives you as a property of the machine being quoted, not as a prediction about your kitchen. Published commercial kitchen stovetop degreasing pages describe what a machine is built to do, not what your stoves will look like afterwards; a datasheet is not a prediction about your own cooking line. So read a specification table as a list of questions: what is the heating output of the exact unit being delivered; how does it switch between modes; is the water supply plumbed in or tank-fed; how long can it run before it needs water or a cool-down; what does the inlet fitting connect to on your tap. Ask for those answers in writing, and then judge the result on your own appliance in a bounded trial. The customized steam cleaning equipment route is where that exchange happens: you send the unit list, the exclusion column and the deposit you are actually fighting, and the supplier answers against that.
Water in, water out, and the floor that has to stay open
A stovetop wash produces hot, grease-laden run-off in a room where people walk in soft shoes. Decide before the work where it goes. A kitchen floor drain is not a grease trap; run-off carrying melted grease belongs in a container, or into a catch point that can be emptied and cleaned, or down a route you have deliberately prepared with absorbent and a squeegee. Nothing should reach the drain unless the trap behind it can take it and the site's own hygiene rule allows it.
Then plan the drying. A wet floor around a live kitchen is a closure, not a detail. Decide which section is out of service, how long it takes to dry enough to walk on, who signs it back open, and what the kitchen cooks during that window. Many kitchens do the line one appliance at a time on this reason alone, not because the machine cannot do more. The check is not only whether the surface is clean; it is whether the floor, the legs and the space beneath the units are dry before service resumes.
Hand-back checks: dry, then test, then release
Release is a sequence, and each step has a person's name against it. Remove the shielding and check that nothing shielding-related has been pushed into an opening. Inspect ignition paths, electrode gaps and burner ports for standing water and for debris the steam has moved. Check that knobs, switches and housings are dry where a hand will sit on them. Restore power and confirm the display and controls behave. Then, on the gas units only, relight per the manufacturer's instruction, watch the flame settle, and confirm the safety device behaves as it should before the appliance goes back into service. If anything clicks without lighting, the appliance stays off and the fault goes to the engineer who maintains it, not to the next shift.
A few lines in a notebook close the loop: which unit, what deposit, which mode and roughly how much distance, what was shielded, what was excluded, how long it took, and what had to be re-done. Keep one record from the trial and send it with the enquiry rather than describing the kitchen from memory.
A short check list you can hand to a crew
- One line per appliance: gas or electric, which parts lift off, which openings are exposed.
- Isolation with named owners: gas valve, appliance isolator, extraction, key holder.
- Exclusion column written before the first pass, with what shields each item.
- Condition faults recorded first: cracked glass, lifted edges, perished seals, missing knobs.
- Mode and stand-off chosen per surface, drier near controls and seams, wetter on heavy deposit away from openings.
- Operator kit on before the lance: gloves, eye or face protection, apron, grip footwear, closing trigger.
- Run-off route and drying window agreed, floor out of service until it is signed back open.
- Hand-back sequence: dry, inspect ignition paths, restore power, relight, watch the flame, then release.
What to send before anyone recommends a machine
A supplier who is recommending equipment for a stove line should be getting: the appliance list with construction and openings, the deposit you are actually fighting, the exclusion column, where power and water are available near the line, how the run-off is currently handled, and the window the kitchen can give up. If the answers come back as a brochure and a price without those items, nothing in the quotation has been scoped to your kitchen. Choosing commercial steam cleaning equipment for a kitchen is a specification conversation, and the safety checks above are the input to it, not something discovered after delivery.
