Buyers comparing mobile steam units usually want one clear answer: what numbers has the manufacturer actually published for the model in front of them? For the hand-pushed steam cleaning machine sold as PowerDe HMW3, the specification page is deliberately narrow. It lists a physical size of L1150 × W520 × H1030 mm, hand-push movement, a 4.5 kW PTC semiconductor heater, a 50 L clean-water box volume, a tap-water inlet with a 4-point internal-tooth fitting, dry steam and wet steam modes, a 48 V battery working power supply, and a high-pressure water gun with nozzle as the cleaning method. Everything outside that list has to be confirmed with PowerDe in writing before it goes into your purchase order, tender document, or service manual.
What the HMW3 product page already publishes
The two HMW3 listings — the version including battery and the version without battery — describe a high-temperature, high-pressure machine with dry and wet steam modes, positioned for cleaning and disinfecting hospital beds and medical machinery. The parameter block on the detail page gives you seven items you can quote directly: machine dimensions, mode of movement, heating power, tank/box volume, water inlet type, steam modes, and working power supply. That is enough to answer questions about footprint, throughput per tank refill, site water supply, and the electrical system the machine runs on.
Read the 48 V line carefully. The published working power supply is a 48 V battery, which is why the unit can be pushed through a ward corridor or a clinic bay without dragging a mains cable. The 4.5 kW figure is heater power on that battery system, not a mains draw, so do not compare it straight against the kW rating of a plug-in machine.
The figures you must request in writing
Several values that normally decide a business case are not published on the HMW3 page. Steam temperature and steam pressure are described as high-temperature and high-pressure but not quantified. Battery capacity, continuous runtime, and charger output are not listed, so a shift-length claim cannot be checked from the page alone. Machine weight, hose and wand lengths, the accessory list, noise level, and water consumption per hour are also absent. Treat each of these as an open item on a written specification confirmation, not as something to infer from similar models.
A practical way to close this gap is to send the manufacturer the parameter list above as a table and ask them to fill the empty cells, with the model number HMW3 and the battery or no-battery variant named on every line. The answer you get back becomes the attachment to your purchase order, and it is what you will point to during acceptance testing.
Use the published HW02 data as a format reference
If you want an example of the level of detail PowerDe publishes elsewhere in the same PowerDe cleaning equipment range, the Fixed Steam Cleaning Machine PowerDe HW02 page states 6 kW heating power, 160° steam temperature, 0.8 MPa vapor pressure, an 80 L SUS304 tank, overall dimensions of 1,200 × 800 × 1,200 mm including handles, a tap-water inlet with a 4-point internal-tooth joint (1/2 inch), dry and wet steam plus a vacuum cleaner, and 220 V working voltage. That page shows the specification depth a PowerDe datasheet can carry — temperature in degrees, pressure in MPa, tank material by grade, and dimensions including handles. Ask for HMW3 data in exactly that format, and ask the supplier to state which numbers are measured on the finished machine rather than on a component.
Do not transfer HW02 numbers to HMW3. HW02 is a fixed 220 V unit; HMW3 is a hand-pushed unit on a 48 V battery. Different power architecture, different duty pattern, different site requirements.
How to verify a steam machine specification step by step
- Start from the model number on the machine, not the marketing name. The HMW3 name appears on both the battery and no-battery listings, so specify which variant you are buying.
- Copy the published parameter block into your own evaluation sheet and mark the empty cells: temperature, pressure, battery capacity, runtime, charger output, weight, hose and wand lengths, accessories, noise, water use per hour.
- Ask PowerDe to return the same sheet completed, with units and test conditions, and with the model and variant written on it.
- Check the inlet against your site. The published inlet is tap water with a 4-point internal-tooth fitting, so confirm the adapter you need before delivery.
- Check the power architecture against your site rules. A 48 V battery supply removes the need for a socket in the cleaning area but adds charging space and a charger specification to confirm.
- At delivery, verify the nameplate ratings and dimensions against the signed sheet, and run one dry-steam and one wet-steam cycle on a real surface before you sign off.
Questions buyers send us, and what a straight answer looks like
The useful response to a procurement team is not a brochure paragraph; it is a line item. "Steam temperature" should come back as a number with a measurement point and an ambient condition. "Runtime" should come back as continuous operation at a named mode with a named battery. "Disinfection" should come back as the surface types and contact time the supplier stands behind, since the page describes cleaning and disinfecting hospital beds and medical machinery without giving a procedure. If a supplier answers these with adjectives, the specification is not finished.
Where to go next
Open the HMW3 listing, copy the seven published parameters, and send the supplier the missing-cell list above. PowerDe is a intelligent cleaning equipment manufacturer based in Shenzhen and also publishes customization and engineering services for customized steam cleaning equipment, so configuration questions and written specification confirmations go to the same team. Match the model to your workload first: HMW3 suits hand-pushed work in medical and clinical areas on a 48 V battery system, while fixed 220 V machines and driving-style units in the same product range cover different site layouts and duty cycles.
