Every quotation for a hot-water and steam cleaning machine arrives with a specification sheet attached. The trouble is that sheets are not written to the same template. One supplier types “160°”, another writes “160 °C”, one rounds a number, another changes it between versions. A purchasing team that compares three of these documents side by side ends up negotiating against data it cannot trust.
Verifying published specifications is a sourcing step, not a formality. Done properly, it decides whether the machine you receive matches the duty cycle you sold to your own customers. The sequence below is what we apply to our own product pages, and it is the same sequence we ask buyers to run on any supplier document, ours included.
Start with the fields that decide fitness, not the ones that read well
A cleaning machine specification usually runs to fifteen lines. Four of them carry most of the commercial risk, and they are the first ones to verify.
- Working voltage and supply type. Mains voltage decides where the unit can be installed at all. On the Fixed Steam Cleaning Machine PowerDe HW02 the working voltage is listed as 220 V. On the driving-style PWD02 page the same field reads “220 V (455 V mobile battery), replaceable”, because that machine carries a traction battery as well as a plug. Ask which value your site wiring has to support.
- Heating power and heater type. The HW02 page states 6 kW; the PWD02 page states 4.5 kW with a PTC semiconductor heater. Higher wattage is not automatically better — it has to match the breaker, the cable run, and the duty cycle of the shift.
- Tank volume and tank material. The HW02 lists an 80 L tank in SUS304; the PWD02 lists a 60 L clean-water tank. Material grade, not just capacity, decides how the unit behaves after two years of hard water.
- Mode list. Fixed steam units on our site are documented with dry steam and wet steam. The mobile active-water machines are documented with hot water in addition. If a buyer needs a hot-water pass to move heavy soil, the mode list is the line to read first.
Confirm the mode list before you believe any temperature
“Hot-water cleaning mode” and “steam cleaning mode” describe different streams of water at different temperatures and different flow rates. A specification that mixes them produces the wrong machine.
On our Cleaning Equipment Series, the distinction is visible in the mode field. The driving-style mobile machines — PWD02, PWD01 and HMW2 — are documented with three modes: hot water, dry steam and wet steam. The fixed and hand-pushed units, including the HW02, are documented with dry steam and wet steam. If your brief calls for a hot-water pass on a fixed station, that is a question to put to the supplier in writing before the quotation is signed, not after delivery.
Ask for the mode to be named on the control panel as well as in the document. Where an operator can see which mode is engaged, the machine and the datasheet stay in agreement during the commissioning test.
Read units, ranges and conditions for every number
Three habits catch most specification errors.
First, check that each number carries a unit. Our own HW02 steam temperature has appeared as “160°” on the specification table while other material writes “160 °C”. The intent is obvious, but an obvious value is not a verified value. If the unit is missing, request the corrected page before the specification is quoted into a contract.
Second, ask what the number was measured under. A steam temperature and a steam pressure are readings at a point in the cycle, and that point varies with tank design, inlet water temperature and feed rate. Ask the supplier to state the condition; a serious manufacturer will have a test record.
Third, compare only figures defined the same way. “Heating power” may mean element rating or measured draw. “Tank volume” may mean the water capacity, the usable capacity or the enclosure volume. The HW02 dimensions of 1,200 × 800 × 1,200 mm are given as including handles; whether the measurement includes handles changes whether the unit fits a service bay.
Compare the datasheet, the product page and the nameplate as one document set
Model naming is the most common place where a specification quietly breaks. The same machine can appear under a short marketing name in the title, a registered model code in the parameter block, and a third string on the nameplate.
Our own catalogue carries this problem. The card titled “Fixed Steam Cleaning Machine PowerDe HW03” opens with overview text that refers to PowerDeHMW3 (220 V), while the HW02 page names the model PowerDe®HW02 (220 V). We record the discrepancy and are correcting it. For a buyer the lesson generalises: reconcile the page title, the model field, the nameplate photo and the shipping documents before you place the order, and make the reconciled model string the one written on the purchase order.
Also count the safety features rather than trusting a headline. The HW02 page lists leakage protection, short-circuit protection, high-temperature protection, high-voltage protection, water-shortage protection and high-voltage explosion protection. Earlier material on this site described five protections for the same machine. Use the item names, and ask the supplier to show each one on the wiring diagram or in the user manual.
Ask for the fields a specification usually leaves out
The published table answers the easy questions. The operating cost lives in the fields most sheets omit: steam pressure at the nozzle rather than in the boiler, continuous runtime per tank fill, recharge time, water consumption per hour, hose and wand lengths, the accessory list, weight, and noise level.
On the hand-pushed HMW3 page, the parameters published today are dimensions, movement type, heating power, tank volume, water inlet, modes, working supply and cleaning method. Steam temperature, steam pressure, battery capacity, runtime, charger output, weight, hose lengths and noise are not published there. A buyer who wants to cost a shift has to request those figures in writing and attach the answer to the enquiry.
Put the request in a single email, with a numbered list, and ask for the same list back on company letterhead. Vendors answer complete requests faster than a stream of follow-ups, and the reply becomes part of your acceptance criteria.
Make the verified numbers the contract numbers
Verification ends when the agreed figures appear in two places: the purchase-order specification annex and the commissioning test sheet. Fix the model string, the supply arrangement, the mode list and the four fitness fields, then require the machine to be started on site against that sheet before the invoice is released.
If your comparison covers more than one model, the cleaning equipment series pages hold the current parameters for each unit, and the contact page reaches the engineering team directly. Send us the specification you are working from and we will mark up the fields that need clarification — including the ones on our own pages.
