What the published footprint actually covers
The specification table on the PowerDe HW02 product page lists machine dimensions of L1200 mm x W800 mm x H1200 mm, and the remarks column states that this envelope includes the handles. That last point matters when a buyer draws a layout: the measurement already accounts for the parts an operator grips when moving the unit, so it is not a bare cabinet size that will grow once handles, hose and wand are fitted.
Treat the published figure as the equipment footprint, not as the working footprint. A bay also needs space for the operator to walk around a vehicle, for the water supply connection, and for safe movement over the surface the machine rolls on. A practical way to size the space is to take the quoted length, width and height, then add clear walking room on the sides the operator uses during a wash. Buyers who plan around the published number alone often end up with a machine that parks correctly but cannot be driven to the far side of a vehicle.
Check the surface and the services before the machine arrives. The HW02 is a fixed, wheeled unit rather than a portable case, so the floor should be firm, level and drained. The inlet is recorded as tap water with a 4-point internal-tooth joint, 1/2 inch, so the plumbing needs to match that connection at the position where the machine will stand. Site preparation is usually cheaper and faster when it is specified in the purchase enquiry instead of being discovered on installation day.
Reading the tank and utility data as a duty cycle
Capacity in this class of industrial steam cleaning equipment is about continuity, not about how heavy the machine looks. The HW02 is specified with an 80 L tank in SUS304 stainless steel, a heating power of 6 kW, and a working voltage of 220 V. The 80 L volume describes the tank itself; the page does not publish a water consumption figure per hour, so capacity should be read as how long a run can continue between refills rather than as a fixed number of washes.
Two published operating figures shape that duty cycle: a steam temperature of 160 degrees and a vapour pressure of 0.8 MPa. The same switching control gives dry steam and wet steam, and the specification notes a vacuum cleaner alongside those two modes. For a buyer, the useful question is not which number is larger, but how the modes are used in sequence on a real job — dry steam for the surfaces that need heat with little moisture, wet steam where soil has to be softened, and the vacuum pass for the interior. A machine that can be switched quickly between those three jobs keeps one operator moving instead of stopping to change equipment.
Electrical supply deserves the same arithmetic. The unit is specified at 6 kW on a 220 V working voltage, so the circuit feeding the bay has to carry that load continuously and in the environment a forecourt or depot creates. Confirm the supply arrangement with your own electrician and quote it in the enquiry, because a bay that trips a circuit at the busiest hour loses more revenue than the machine earns.
Estimating the operator workload for your site
Use your own timings, not a published claim. Record the minutes one of your operators needs for the three tasks this machine is positioned for: the exterior pass, the engine-compartment cleaning, and the interior vacuuming and disinfection. Take the median of several vehicles rather than the best run, then add the minutes for refilling, moving the unit and moving the vehicle.
Then run the comparison in three steps:
- Convert your median minutes per vehicle into vehicles per operator per shift, and compare that with the volume you need to clear in the hours when customers actually arrive.
- Note where the operator waits — for the tank, for the machine to come up to working conditions, or for a second piece of equipment. Waiting minutes are the cheapest capacity to recover.
- Check how many cleaning positions your floor allows. A single fixed steam cleaning machine served by one operator may be the right answer for a forecourt, while a depot with a queue at opening may need a second bay and a second machine.
A useful comparison across your shortlist is the same calculation repeated on each candidate: published envelope plus your walking room, published tank and power against your shift length, and your own minutes per vehicle. Two machines with similar specifications can produce different throughput purely because one is easier to move around a vehicle and to refill.
Safety features to confirm in writing
The HW02 description lists leakage protection, short-circuit protection, high-temperature protection, high-voltage protection, water-shortage protection and high-voltage explosion protection. In an unattended or shared bay, these are the items to verify against the delivered configuration, since the equipment runs at elevated temperature and pressure in front of the public. Ask the supplier to state which protections are fitted on the exact model you are buying, and confirm what a fault does — whether the machine shuts down, alarms, or simply stops producing steam.
Write the operating rules alongside the purchase. A fixed bay needs a trained operator for steam and hot-surface work, a documented refill routine, and a written procedure for a machine that runs short of water. Those rules do most of the work in protecting staff and equipment, and they are also what your insurer or site audit will ask about.
Before you place the order
Some details are not published on the product page and should be confirmed with the manufacturer rather than inferred: the lengths of the hose and wand, the accessory set, the weight, and the runtime a full tank supports under your working pattern. Those items decide how far the machine can reach without being moved and how the bay flows, so they belong in the enquiry.
Shenzhen PowerDe Automation Precision Equipment also lists mobile and hand-pushed steam units in the same range, which is worth considering if your volume is seasonal or your washing position changes. Compare a fixed unit and a mobile unit on the same three measures — floor space, tank capacity against shift length, and your own minutes per vehicle — and the decision usually becomes clear before a quotation is even requested. Send your layout, your shift pattern and your target vehicles per day with the enquiry, and you will get a comparison you can act on instead of a specification sheet.
