Start with the surface, not the machine
Commercial sinks are made from stainless steel, and the exterior — the front panel, the cabinet underneath, the legs or the base frame — collects a different soil than the basin does. Splash-back leaves a thin film of oil and food residue that dries into a hard coating. Splashing at floor level adds grit that scratches the surface if you wipe it with an abrasive pad. Before choosing any tool, decide two things: how far the sink is from a water inlet and a drain, and whether the area around it can get wet. Those two answers decide whether you need a hose-fed machine or a self-contained unit that carries its own water tank.
In a working kitchen, the floor around a sink is often the only place to work, and a machine that floods that floor creates a slip hazard and a second cleaning job. This is the main reason facilities move from a pressure washer to commercial steam cleaning equipment: the steam does most of the lifting with a fraction of the water, so the surrounding floor stays close to dry.
The equipment list, item by item
1. A heat source that can lift bonded grease
Cold water rinses off loose debris; it does not remove polymerised grease. The practical options are hot water from a heater or saturated steam. A PowerDe steam cleaning machine heats water in an insulated tank and delivers it as either dry steam or wet steam, which lets one operator switch between degreasing a vertical panel and finishing a flat surface with the same lance. On the fixed model HW02 the detail page lists 6 kW of heating power, a steam temperature of 160°, and a vapour pressure of 0.8 MPa, with an 80 L stainless steel (SUS304) tank and a 220 V supply. Those numbers are what you compare against your own site power and shift length, not marketing figures.
Two details on that machine matter for sink work: the water inlet is a tap-water connection with a 4-point internal-tooth joint (1/2 inch), and the footprint is 1,200 × 800 × 1,200 mm including the handles. In a narrow kitchen aisle, that footprint is the difference between a machine that parks beside the sink and one that blocks the aisle. Where a fixed unit cannot fit, the hand-pushed and driving-style models in the PowerDe cleaning equipment range are built to move through tight spaces, and some variants run on a battery instead of a mains cable.
2. A nozzle and lance set matched to flat panels
A rotary nozzle that is right for a concrete floor will streak a stainless panel. For sink exteriors, teams generally need a flat-fan or wide-angle spray head for the panel faces, a narrow jet for the seams and the corners where the sink meets the wall, and a brush attachment for the base frame. Keep the nozzle moving on stainless; a stationary jet concentrates heat in one spot.
3. Containment for the runoff
Grease and water running off a sink exterior must not cross a food prep area. At minimum: a tray or berm under the base, absorbent mats on the floor, and a plan for where the runoff goes. If your drainage rules restrict grease discharge, this is the constraint that sizes your cleaning method — confirm it with your local authority before you write the procedure.
4. Drying and finishing
Stainless left wet shows every mineral in your water. A vacuum picks up the bulk of the moisture, and a clean microfibre cloth follows the grain of the steel to finish. The HW02 page lists a vacuum cleaner as part of the machine's equipment set, alongside its dry- and wet-steam modes, which is why one operator can clean and dry the same panel without walking to a separate machine.
5. The safety items people forget
Steam at the temperatures listed above will burn through a cotton glove. Insulated gloves, closed footwear, and eye protection at the lance are non-negotiable. Electrical safety matters more near a sink than almost anywhere else on site: the HW02 product page lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection among its safety features. Check that your circuit is correctly earthed and that a residual-current device protects the outlet before the machine is switched on near water.
A repeatable sequence for the exterior
Follow this order on every pass. First, clear the area and protect the floor and adjacent work surfaces. Second, dry-wipe or vacuum loose debris so you are not turning dust into mud. Third, pre-rinse with wet steam, working from the bottom of the panel upward so runs do not track dirt onto steel you have already finished. Fourth, hold the lance at a consistent distance and work in passes that overlap slightly. Fifth, treat seams and corner joints with the narrow jet — that is where the visible build-up returns fastest. Sixth, pick up the moisture with the vacuum, then finish by hand with the grain of the steel. Seventh, log the job: who cleaned it, which machine, and which mode was used.
Write that sequence down and put it on the wall. Consistency is what auditors look at, and it is also what stops one shift from using an abrasive pad that ruins the finish another shift just spent an hour restoring.
Fixed, hand-pushed or driving style: which one fits
A fixed machine is the right call when one site, one shift, and a mains supply are available — the tank and heater are larger, and there is no battery to manage. A hand-pushed unit suits a site where the same machine has to reach several rooms; the HW03 hand-pushed model's published parameters include a 4.5 kW PTC semiconductor heater, a 50 L clean water tank, a 48 V battery supply, and dimensions of L1150 × W520 × H1030 mm, which is small enough for most service corridors. A driving-style machine suits operators working across a large outdoor or garage area — the same kind of job as washing several units in a yard rather than cleaning one fixture.
Model availability and configuration vary between battery and non-battery variants, so confirm the exact specification for the machine you are quoting. If your site has unusual constraints — no water inlet, restricted power, a requirement to clean while the kitchen is running — the customized steam cleaning equipment route is where a manufacturer scopes the configuration with you instead of selling you a catalogue box.
Questions to ask a supplier before you order
- What steam temperature and pressure does the machine hold at the nozzle, not just at the boiler?
- Is the tank and housing stainless, and which grade?
- What protection functions are built in, and how are they tested at commissioning?
- What is the machine's footprint, and can it get through your doorway to the sink?
- What training and spare-parts support comes with it, and in what language?
