Cleaning an engine block or a transmission housing in a parts plant is not the same job as cleaning a car in a washing bay. The parts still carry cutting fluid, drawing compound and metal swarf; the fixtures, conveyors and guarding that surround them are electrical; and the line has to be back up on schedule. A fixed steam cleaning machine belongs in this setting, but only when it is placed, plumbed and scheduled as part of the production area — not rolled in as a portable unit and left in an aisle.
Where a fixed unit fits better than a mobile one
Most of PowerDe's steam cleaning machines are mobile: the driving-style PWD01, PWD02 and HMW2 units and the hand-pushed HMW3 move to the work. A fixed machine does the opposite — the work moves to it. That trade is worth making in three situations.
First, when the same small set of parts or fixtures is cleaned on a repeating cycle. A cleaning point at the end of a machining cell, or next to a deburring station, lets the operator clean at the end of a run without stopping the line. Second, when the water, power and extraction can be tied in once. Mains water and 220 V supply are already available around most machine shops, and a fixed position allows a drain and, where needed, an oil-separating step downstream. Third, when floor space is scarce. A fixed machine occupies a marked bay instead of being stored between jobs.
Where parts have to be moved long distances, or where cleaning is occasional, a mobile machine remains the practical choice. PowerDe publishes both types in its cleaning equipment series, so the decision can be made line by line rather than for the whole plant.
A useful way to decide is to count the cleaning events a week and measure the distance the part travels between the machine tool and the cleaning point. If cleaning happens at the end of every run and the part moves only a few metres, a fixed point saves the walking, the hose dragging and the refilling that a mobile unit repeats on every event. If cleaning is a weekly or shift-end job, or if the same unit has to serve several bays, the mobile route is cheaper and keeps the floor clear.
Reading the fixed-machine data against a parts-cleaning task
PowerDe's fixed machine HW02 is listed for 220 V operation, with a 6 kW heating element, an 80 L SUS304 tank, a footprint of about 1,200 × 800 × 1,200 mm including handles, and a tap-water inlet with a 4-point internal-tooth joint (1/2 inch). The published steam figures for this model are 160 °C and 0.8 MPa, and the machine switches between dry steam and wet steam.
Those numbers set site requirements that have to be settled before delivery. A 6 kW element on a 220 V supply needs a dedicated circuit and correct protection; an electrician should size it against the shop's distribution rather than discover the limit at commissioning. The tank capacity means the water demand is continuous across a shift, so plumbing the inlet to the mains — instead of refilling by hand — is what keeps a cleaning cycle running. The dry/wet switch matters on a shop floor: dry steam carries less water, so it puts less liquid into electrical enclosures, motors and bearing areas, while wet steam suits the heavier soil on an outside housing. The 80 L figure is published for the HW02 only; PowerDe's other fixed unit, the HW03, has no tank capacity given in the site's category text, so it must be requested separately. Cycle length is not published for either fixed machine and has to be requested.
One point needs care. The HW02 product page on powerde.net describes vehicle exterior cleaning at gas stations and parking lots, interior work and engine-compartment cleaning — not parts cleaning. Its protection features are listed as leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, with a further high-voltage-explosion item in the overview text; the wording of that list differs between pages. Because the published application list points at vehicles, a parts-cleaning buyer should ask PowerDe to confirm the model, the accessory set and the applicable standards for their process, and should run a cleaning trial on their own parts and soil before committing to a line layout. PowerDe's own site notes that English terminology and some figures are not consistent across pages, so written confirmation of the specification is worth having.
What steam handles well, and where it will not replace a wash
On parts, the useful job of a high-pressure steam cleaning machine is surface soil: cutting and drawing oils, grease film, coolant residue and the swarf bound in that film. Heat lowers the viscosity of the oil and the pressure lifts it off, which is why steam degreasing equipment is usually specified for external machine surfaces, fixtures, guards, conveyors and tooling rather than for internal passages.
What it does not do is replace a parts washer where the requirement is a flush of bores, galleries or blind holes, or a rinse to a defined cleanliness for assembly or coating. Steam also leaves a wet surface: parts that go straight to a coating, a bonding step or an inspection gauge need a drying step and a controlled hold before the next operation. Where swarf and oil run off into a drain, shop drainage needs a separator and a routine for clearing it.
The same limits define what to write into an RFQ. State the part material and dimensions, the soil (which fluid, and whether it has been baked on), the takt you can allow for cleaning, and the state the part must be in afterwards. A machine vendor can only size the unit, the nozzle set and the cycle against those details.
Placing the machine in the line
Layout is where most fixed installations either work or fail. A practical arrangement keeps four things within one operator's reach: the machine, a drain, the parts being cleaned, and a staging area for clean parts. The unit's roughly 1.2 m square footprint plus handle clearance is the minimum envelope, and access to the tank, fittings and hose has to stay clear for servicing.
Around that envelope, treat the surroundings as you would around any pressure-washing point:
- Mark the bay and the walkways, because steam and wet floors change how people move through a shop.
- Shield or cover nearby electrical panels, motor junction boxes and sensors before a cleaning cycle, and keep the nozzle away from bearings, where pressurised water can be pushed into a seal.
- Provide the PPE the method needs — gloves, eye and face protection, and footwear for a wet floor.
- Plan for the run-off: a drain in the bay, a separator, and a set interval for cleaning out both.
- Write the cycle down, including what is cleaned, how long it takes, and how the part is dried and released.
Two checks are worth doing once the bay is marked but before the first production cycle. Walk the route a loaded trolley or pallet takes from the machine tool to the cleaning point and back, and confirm nothing has to be lifted or tilted to get parts there — an awkward transfer is how cleaned parts get re-contaminated or dropped. Then run the cycle at the time of day it will actually happen, with the neighbouring equipment operating, and check that steam and spray stay inside the bay and that the floor is walkable again within the pause you have allowed.
If more than one line needs cleaning, or if the soil differs between lines, one fixed position rarely covers the whole shop. A common answer is one fixed point on the line that runs every shift, plus a mobile unit for the rest. The mobile PWD series adds hot-water mode alongside dry and wet steam, and the hand-pushed HMW3 runs on a 48 V battery with a 50 L clean-water tank, dimensions of about 1,150 × 520 × 1,030 mm and a 4.5 kW PTC heater — figures published on its product page. Neither model's page publishes steam temperature, runtime or weight, so those have to be requested.
Buying as equipment, not as a catalogue item
PowerDe describes itself as an intelligent cleaning equipment manufacturer with in-house research, manufacturing and customisation, so a fixed cleaning point can be specified rather than merely purchased. Before signing off, ask for: a trial on your own parts and soil, with the result measured against your cleanliness requirement; written confirmation of the model designation and the parameters that matter to your layout (electrical load, footprint, connections); the accessory and nozzle set for the geometries you are cleaning; and the maintenance schedule with the spares list that goes with it.
A fixed steam cleaning machine earns its place on a parts line by shortening the cleaning step and taking the water and power connection once. It earns it only after a trial on real parts. Bring your drawings, your fluids and your takt to that trial, and the decision — fixed point, mobile unit, or both — settles itself.
