A buyer comparing PowerDe cleaning equipment usually wants the same two answers: can the machine reach every surface that gets dirty in my facility, and can it do that without adding water, chemicals, machine downtime or safety hazards? Neither question can be settled from a specification sheet. Both are answered on site, with a tape measure, a maintenance log and a list of the jobs the crew performs every week. The checklist below is what we ask customers to walk through before they request a quotation, and it applies whether the purchase covers one mobile unit or several machines across multiple sites.
1. Inventory the actual cleaning objects, not the room names
Write down every item that gets cleaned, grouped by how dirty it gets and how often. In a vehicle service yard that list runs from body panels and wheel arches to engine bays, interior trim, and the floor of the wash bay. In a machine shop it covers guideways, chucks, guarding, chip conveyors and the areas around a CNC machine where cutting fluid and way oil accumulate. In a hospital or care facility the objects are beds, trolleys, wheelchairs and the housings of medical machinery, where the requirement is cleaning plus disinfection rather than soil removal.
This inventory matters more than the size of the building. Two sites of identical floor area can need completely different equipment, because one is dominated by light surface dust and the other by cured grease on cast-iron surfaces. Score each object on soil type (loose dust, oil and grease, food residue, biological contamination), access (open floor, overhead, inside an enclosure, at height) and frequency (daily, weekly, shutdown only). The completed list is the basis for everything that follows.
2. Map power, water and drainage to each cleaning point
Before any model is discussed, record what is available where the work actually happens. For each cleaning point note the supply voltage and socket location, whether a potable water tap is within hose reach, whether the floor drains or whether water has to be recovered, and how far the crew must travel between the utility point and the machine. This step disqualifies the wrong options quickly and is the least expensive thing to get right.
A fixed steam cleaning machine such as the PowerDe HW02 is built around a 220 V supply, a tap-water inlet and a large stainless tank, which suits a permanent wash position at a service station or a parking facility where those utilities already exist. The mobile driving style steam cleaner in the PWD02 line carries its own water tank and can be offered with or without a battery, which is the better answer when the cleaning point moves, when the parking area is narrow, or when running a cable across a customer's forecourt is not acceptable. The same logic applies indoors: the hand-pushed HMW3 runs on a 48 V battery with a 4.5 kW PTC heater, so it works in corridors and wards where only battery power is practical.
Ask one extra question here that buyers often skip: what happens to the run-off. Steam and hot-water cleaning use far less water than a hose, but the water that does go down a drain in a machine shop carries oil, and in a food area it carries food soil. Local trade-effluent rules decide whether a bunded wash pad, an oil separator or a recovery vacuum is part of the project cost. Getting this wrong is what turns a good purchase into a compliance problem.
3. Match the cleaning mode to the soil, and insist on switching between them
Heat, pressure, chemical action and contact time are the four levers that remove soil. Steam machines change the balance of those levers, which is why they remove grease that a cold hose leaves behind. Two modes matter in practice:
- Dry steam carries high heat with very little free water. It is the right mode for electrical housings, engine compartments, and surfaces where standing water is unwanted, and it is where heat does the work that a detergent would otherwise do.
- Wet steam and hot water add water volume to flush loosened soil away. They suit floors, panels, chassis, and any surface where the residue has to be carried off rather than wiped off.
PowerDe's cleaning range is built around switching between dry steam, wet steam and hot water on the same machine. That single capability is worth checking for on any shortlist, because a site rarely has one soil type. A machine that can only produce high-pressure hot water will use more water and more detergent than the job needs; a machine that can only produce dry steam will leave flushed residue behind. On the HW02, the published figures of 6 kW heating power, 160 °C steam temperature and 0.8 MPa vapour pressure describe the working envelope of that mode range, and the 80 L SUS304 tank sets how long a shift can run between refills.
4. Check reach, mobility and the physical route the machine must take
Walk the route the machine will travel: door widths, thresholds, ramps, drainage channels, tight parking bays, lifts, and the distance between the parking position and the vehicle or machine being cleaned. A unit that cannot get through the door, or that cannot be pushed over a threshold, is not usable no matter how good its specifications are. Note the overall dimensions against the doorway and the working position. As a reference, the HMW3 hand-pushed unit is listed at 1,150 × 520 × 1,030 mm, which fits standard doorways but not a narrow service hatch, and the HW02 measures 1,200 × 800 × 1,200 mm including handles, so it is a fixed-position machine rather than something to carry between floors.
Then check the accessories against the objects from step 1: lance length, nozzle angles, a brush for textured surfaces, a carpet or upholstery tool for vehicle interiors, and an extraction vacuum where loosened soil has to be lifted rather than rinsed. The HW02 pairs its steam modes with a vacuum cleaner, which is what makes interior trim and engine compartment steam cleaning practical without a second machine.
5. Verify the safety and protection features against your own environment
High-temperature, high-pressure steam is a scald and electrical hazard, and the protection package is part of the equipment specification, not a bonus. For each machine, ask the supplier to state which protections are fitted and to show where they are described on the product page. The PowerDe battery-powered and fixed models list leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, with water-shortage protection being the one that matters most in daily use: running a heater dry is the most common way a steam machine fails in service.
Then compare those features with your site conditions: wet floors, wash bays where water spray reaches the machine, cold-store or outdoor use, and whether operators are trained or rotating. If operators will be using the machine around customers or the public, check for the additional physical controls you will need yourself — barrier tape, a locked lance trigger, and a written method statement. Do not assume a protection is present because a similar model advertises it.
6. Confirm duty cycle, consumables and what support exists after delivery
Estimate the real workload and test it against the machine. Count cleaning cycles per day, minutes per cycle, and the tank capacity that sits between refills — the HW02's 80 L tank and the HMW3's 50 L tank are a realistic range for these machines, and the gap between them is how often someone has to stop and refill mid-shift. Then ask about the parts that wear and the parts that fail: heaters, seals, hoses, lances, pumps and, on battery models, the battery and charger. Ask in writing what is covered, for how long, and what a replacement part costs and takes to arrive. A machine with a modest price and a four-week lead time on a heater can cost more per cleaning hour than a machine that costs more up front.
Also confirm water quality at your site. Scale is the primary long-term failure mode for any heated water system, and the HW02 accepts mains tap water through a 4-point internal-tooth inlet; where supply water is hard, a softening or filtration step should be agreed with the supplier before the machine is installed rather than after the first service call.
7. Score the business case: labour, water, chemicals, downtime and compliance
With the facts from steps 1 to 6 in hand, build the comparison against the current method. Use only numbers you can produce from your own records: labour hours per clean, water and detergent spend, the number of machines taken out of service for cleaning and how long that stoppage lasts, the frequency of failed hygiene or inspection checks, and any water-disposal cost. Write those baseline figures down in the same units you will use after installation, so the comparison is a like-for-like one. Cleaning equipment is bought on this comparison, not on the machine price alone, so the site assessment should end with a table that shows the current method against the proposed method on each of those lines.
Two outcomes usually decide the purchase. The first is labour: whether one operator with one machine can now do what took two people and a hose. The second is production: whether cleaning can happen while the machine or vehicle is parked in its normal position rather than being moved to a wash bay. Where either answer is yes, the payback calculation is normally settled inside the first year of ownership.
What to send to the supplier with your assessment
A completed site assessment turns into a short, specific enquiry. Send the object inventory from step 1, the utilities and drainage notes from step 2, the route measurements from step 4, the daily cycle count from step 6, and the decision criteria from step 7. Ask the supplier to reply with the recommended model and why, the accessories included, the protection features fitted, the consumable and warranty terms, and — where your requirement does not match a catalogue model — whether customized steam cleaning equipment is available and what it involves. PowerDe also lists engineering services covering product development and hardware testing for cleaning equipment, so unusual duty cycles, tank arrangements or on-board power arrangements can be raised at enquiry stage instead of accepted as unavailable.
If you have the object list and the utility positions for a single site, send them to sales@powerde.net with the phone number +86 13023198376 and we will confirm which configuration fits, along with a quotation and the specification data you need for internal approval.
Frequently asked questions
How long should a site assessment take?
For one site, half a day walking the area with the maintenance and cleaning staff, plus an hour compiling the numbers from existing records. The measurements and utility positions can be gathered in a single visit; the labour and downtime figures come from logs you already keep.
Do I need to know the model before the assessment?
No, and deciding early is the most common mistake. The assessment exists to establish the constraints — soil type, utilities, access, duty cycle — and those constraints narrow the model choice. Choose against the assessment rather than the catalogue.
What if my requirement is not on a product page?
Send the requirement anyway. Cleaning jobs differ by access, duty cycle and on-board power arrangements, and where a catalogue model does not fit, a manufacturer can confirm whether an adjustment is possible and what it involves. Use the product pages to check published parameters, and treat anything you need but cannot find there as a question for the supplier rather than an assumption.
