A degreasing purchase rarely fails on the first shift. It fails three months later, when the cleaning bay has a queue because every cycle takes longer than quoted, or when the plant's own maintenance log starts showing corrosion on the parts that were just cleaned. Before a quotation turns into a purchase order, it is worth putting the same questions to every supplier you are evaluating and writing the answers down. The five groups below are the ones that separate a machine that fits your operation from a machine you end up working around.
1. Which oil are you actually removing, and how is it bonded to the surface?
"Oil stain" is not one problem. Cutting fluid sitting on a freshly machined housing behaves differently from graphite mixed into cutting oil that has baked onto a guide rail, which behaves differently again from hydraulic grease that has been collecting swarf for weeks in a way that has turned almost solid. Each of those needs a different combination of heat, pressure, and mechanical action.
Before you talk to a supplier, describe the deposit precisely: oil type, whether it has been heated or left at ambient temperature, how thick the layer is, and how often the surface accumulates it. Then ask the supplier which mechanism they are relying on to break that specific bond. High-temperature steam works because heat lowers the viscosity of most petroleum-based oils and the pressure lifts the film off the surface, which is why industrial steam cleaning equipment is often chosen where solvents and manual scrubbing are either slow or unwelcome.
2. Can you supply the utilities the machine needs, where it will stand?
Most breakdowns in the cleaning area are utility problems, not machine problems. Check three things against the actual floor space rather than the layout drawing: the available electrical supply, the water inlet, and whether wastewater can be contained and drained legally.
Ask for the working voltage, the heating power, and the water inlet specification in writing. A fixed unit such as the Fixed Steam Cleaning Machine PowerDe HW02 runs on a 220 V supply with 6 kW of heating power, holds an 80 L SUS304 tank, and takes a tap-water inlet through a 4-point internal-tooth joint, so a site that can only offer a lower supply capacity or has no water feed at the bay will need either a different model or a different bay. Compare that against a battery-powered mobile unit when the cleaning point moves around a workshop or a parking area, because then the question flips from supply capacity to runtime and charging.
3. What does the supplier need from you to size the job, and what do they hand back?
A supplier who quotes from a product photo is guessing. Give them the surface material, the surface area per cleaning event, how many events per shift, and whether the equipment is cleaned in place or moved to a fixed wash area. Then see what comes back.
A useful response names a model, states the mode it will run in, and explains the choice. PowerDe's cleaning range, listed in the Cleaning Equipment Series, splits along those lines: driving-style mobile units for indoor garages and tight outdoor parking spaces, hand-pushed units for confined indoor areas, and fixed units for a set cleaning point. If the supplier cannot say which of those three families suits your workflow, they have not sized anything yet.
4. What happens to the machine between the first week and the second year?
Ask what fails, how fast consumables wear, and who replaces them. On heated steam equipment, the heating element, seals, and nozzles are the parts that decide your uptime, and water quality is the variable that decides how long they last.
Also ask what protection the machine has, and what you are expected to do about it. The HW02 page lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, plus protection against high-voltage explosion. Treat that list as a starting point for a conversation, not as a certification: ask which standards the unit is built to, what documentation comes with it, and what your own operators still have to manage in procedure and PPE.
5. Can you see it run on your own soil before you commit?
This is the question that most often gets skipped, usually because it slows the procurement down by two weeks. Ask for a trial on a representative part, panel, or machine section from your own site — not the supplier's demonstration sample. The variables that matter in your plant (oil age, film thickness, substrate coating, ambient temperature) are almost never reproduced on a demonstration piece.
A trial also exposes the things nobody puts in a datasheet. Ask the operator who runs it for a full shift whether they would keep running it, and time the cycle from start to a surface you would sign off on. Compare that time to your current method, including the labor, the detergent, the rinse water, and the downtime you are currently absorbing. On paper, an equipment purchase looks like a hardware cost; in practice it is a replacement for a cleaning routine you are already paying for every day.
Before you send the enquiry
Two habits make the whole comparison easier. First, send every supplier the same written brief, so differences in quotation reflect differences in the machine rather than differences in how the job was described. Second, keep the answers side by side in one document — utilities, cycle time, consumables, warranty, and trial result.
If the trial shows the deposit is not lifting cleanly, that is not a failed test. It tells you the mechanism is wrong for your oil, and the next conversation should be about a machine built for the residue you actually have rather than a cheaper version of the one that did not work. For an equipment review or a customized configuration, PowerDe's engineering services cover equipment customization and testing alongside the cleaning range, which is worth asking about when your soil does not match a standard catalogue entry.
