Water and power supply come first
Most fixed units are built around a fill tank and a mains connection. The Fixed Steam Cleaning Machine PowerDe HW02 is listed with an 80 L SUS304 tank, a tap-water inlet with a 4-point internal-tooth joint, and 220 V working voltage. A buyer who has a water tap but no suitable outlet, or an outlet on a different supply, cannot use the machine without an electrical change first. Walk the route from the panel to the wash bay and confirm cable length, socket rating and earthing before ordering.
The water source matters too. The inlet is described as tap water, not recycled or softened process water. Sites with very hard supply should ask the supplier what water treatment is recommended, because scale inside a heater and pump is a maintenance problem that shows up slowly and then all at once.
Dry steam and wet steam are not one setting
The HW02 page describes switching between dry and wet steam, with 160° steam temperature and 0.8 MPa vapor pressure. That gives a buyer two different jobs in one tool. Dry steam carries heat into grease and residue with little added liquid, which suits enclosed areas and surfaces that must not be soaked. Wet steam adds water, so it lifts looser soil but leaves more runoff.
The limit is obvious once written down: any surface, joint or fitting that must stay dry rules out the wet mode. Engine compartments are the usual test. The product page lists engine-compartment cleaning, but a buyer with sensitive wiring looms should ask the supplier for a working method for their specific layout rather than assume one procedure covers every vehicle.
Heat and pressure need operator controls
A machine at 160° and 0.8 MPa is not a pressure washer with a hot setting. Staff need insulated gloves, closed footwear and a written rule about where the nozzle may point. The HW02 listing describes leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection. Those items are reasons to trust the hardware, not a replacement for training. A buyer should ask what the protections do in plain language, then write the operating steps around them.
Mobility and floor space set the workflow
The HW02 dimensions are given as 1,200 × 800 × 1,200 mm including handles. That is a floor unit, not a machine to carry up stairs. Sites with one fixed bay can plan around it. Operators who move between several bays, or who work in narrow outdoor parking, usually look at the mobile range instead, such as the PowerDe PWD02 steam cleaner, listed with dry-steam, wet-steam and hot-water modes and offered in variants with or without a battery. The battery question is a working-time limit: a battery-powered unit is free of a cable but bounded by charge, and each product page states what it includes, so check whether the quotation is the version with the battery.
Runoff and drainage decide where cleaning may happen
Steam cleaning uses far less water than a hose, but the water that is used still leaves the surface carrying oil, silt and detergent residue. Indoor garages and covered bays need a drain and, in most areas, an interceptor. Outdoor washing on permeable ground is often restricted regardless of equipment. Before a buyer chooses a machine, they should map where the runoff will go; a machine that cannot be drained legally is the most expensive kind of spare part.
What the buyer should ask before ordering
Three checks settle most decisions. First, confirm the supply: voltage, socket, water inlet and drain. Second, confirm the job: which surfaces need dry steam, which tolerate wet steam, and which need neither. Third, confirm the pattern of work: one fixed bay or several locations, and whether a tank or a battery fits that pattern. PowerDe's cleaning range covers fixed, hand-pushed and driving-style machines, so the task is matching the machine to the site, not assuming the highest specification is the right purchase.
A short written answer to those three checks is worth more in a quotation request than a list of model numbers, and it lets the supplier propose the configuration, accessories and spares that fit the working day you actually have.
