Agree the acceptance standard before the delivery date is booked
The most common reason an acceptance check goes soft is that it is written after the truck has been scheduled. At that point the standard is whatever both parties remember from the sales conversation. Write the standard into the purchase paperwork while it is still a negotiation item: the surfaces or positions the unit is being bought for, the three operating conditions named on the product page, the accessories expected in the crate, and the sentence that says what counts as a pass. A standard that names two demonstration patches on the buyer's own equipment is enforceable. A standard that says the machine should clean well is not.
State the boundary as plainly as the requirement. If a duty was never discussed - a different soil, a different building, a material nobody quoted - it should appear in the paperwork as an exclusion rather than be discovered as a grievance later. A written exclusion costs nothing and prevents the argument that the unit was expected to cover an application it was never offered for.
Documentation that must be in hand at handover
Paperwork is the cheapest section of the check and the one most often skipped. The buyer should expect, and tick off, the operating manual for the exact model and variant received, the wiring and connection information that the site electrician will need, the consumable and wear-part list with the part names the supplier will use when a replacement is ordered, and a written warranty statement with its start date, its exclusions and the name of the party that services the unit. If the order conversation produced a specification sheet or an e-mail confirming an accessory set, that document is part of the pack too, because it is the reference the check is scored against.
Record serial and asset identity on the same page as the check. Model designation, variant, serial number, delivery date, and the name of the person who accepted the unit. Six months later, a service request is answered by those fields, and a machine whose identity was never written down is a machine whose warranty position is guesswork.
Physical condition, delivered parts and the handling route
Walk the crate before anything is connected. Housing, panel face, hose ends, couplings, wand, wheels and frame for transit damage and for missing items; compare what is on the packing list with what is in the packaging, including nozzles, extension pieces, brushes and any cable or supply set that was priced. Note substitutions immediately - an accessory swapped in transit is far easier to resolve on the delivery day than after the crate has gone.
For a mobile unit the handling route is part of the machine's fitness, so it belongs in the check. Push the unit along the path it will actually use: over the threshold, across the surface change, around the corner, into the position where work is done. A mobile machine that cannot be moved into the working position without being lifted is not being used as a mobile machine, and finding that out at handover is what the acceptance check is for.
Site supply: power, water and drainage where the unit will stand
A steam machine is only as good as the services at its position, and the published product page does not decide those for you. Confirm on site that the outlet serving that position is on a circuit that will carry the machine, that the cable reaches the working area without crossing a walkway or a doorway, and that a water supply and a drainage route exist where the unit will be filled and emptied. Where the order was placed on the cable-fed variant, the check should also record whether the position needed new outlet work or whether an existing outlet was already in reach - that is the difference between a delivery that day and a delivery with an electrician still to come.
Drainage is routinely left out of the check and is the item that most often turns into a wet floor complaint. Write down where waste water goes, who empties the tank, and what is done with the run-off under a vehicle or inside a garage. If a drain is not nearby, record the collection method that was agreed, because "somewhere outside" is not a drainage plan.
Function checks the buyer should run, item by item
Three conditions are published for this model: dry steam, wet steam and hot water. Each should be selected and observed at handover, because a unit can be perfectly healthy in one condition and blocked or bypassed in another. For each condition, record the time from selection to a usable output, the character of the output at the nozzle, and whether the change between conditions happens from the controls without re-plumbing anything. Keep the timing observations in the buyer's own words and units of work - "reached a usable output before the first panel had been passed twice" is a usable note; a copied figure from the brochure is not, because nobody verified it in this building.
Then check the machine's behaviour rather than its output: that it holds a steady condition without the operator adjusting it constantly, that the supply and feed arrangements do not interrupt work mid-panel, that controls are legible from the working position, that hoses and cable do not snag on the machine itself, and that stopping, parking and moving it again takes no unusual effort. If the unit carries an energy store or a charging position, the check should cover how it is charged, what the site rule is for that position, and what happens when the store is exhausted mid-task. If it is the cable-fed variant, the check covers cable handling and reach instead. Do not credit the cable-fed page with anything the battery page promises, or the reverse; the two product pages are separate and are not interchangeable.
A bounded duty demonstration on the buyer's own soil
A short run on the buyer's own work is the centre of the check. Mark two patches in different conditions - one light and freshly soiled, one old and bonded - and treat everything outside the tape as out of scope for the demonstration. Before the run, photograph both patches. After the run, photograph them again from a similar position. Write down, per patch, which condition was used, how many passes it took, what was left behind, and what had to be repeated.
Judging the demonstration fairly matters as much as running it. Steam removes what it can reach on the surface it is pointed at; it does not flush a cavity, rinse a chemical off, or dry a panel. So the check should ask whether the soil was lifted from the surface, whether residue was carried somewhere it should not go, whether the surrounding area stayed within condition, and whether an untrained operator could repeat the same result. If a material is delicate, or a joint or seam is present, inspect it after the run and record the result - damage observed at acceptance is a different conversation from damage reported a month later.
Where the job in view sits outside what the site's cleaning pages describe, the demonstration should say so honestly and be scored as an open item rather than folded into the pass line. The published scope for this unit is enclosed garages and cramped outdoor parking bays, and the buyer's own duty record is what decides whether their job belongs inside it. A supplier who sells duty into other environments should be asked to put that duty in writing before the check is signed.
Operator handover and the safety record
A machine that only one person can run has not been accepted; it has merely been delivered. Have the operator who will actually use the unit run the demonstration while the supplier's representative watches, and record who was trained, on what date, on which controls, and what they were told about hot surfaces, hose handling, refilling and parking. Ask for the personal protective equipment the manual calls for and check that it arrived with the machine or has been ordered. Keep the training note with the acceptance page, not in a separate folder; the two documents are read together whenever something goes wrong.
Upkeep items to confirm at acceptance
Acceptance is also the moment to establish the upkeep routine, because the parts that wear decide what the machine costs to own. Ask, and write the answers down: which parts are considered consumables and how often they are expected to be replaced, how the machine is descaled in the buyer's water, what the daily and weekly routines are, which fault indications should stop work immediately, and how a service call is raised. Ask for the water-quality expectation in the buyer's own terms - what the incoming supply is like and what treatment, if any, the manual expects - because that answer governs how the machine behaves after the first year.
Record the supplier's service commitment in the same column as the check result: who responds, over what period, and which parts are covered. If the answer is vague, the check is not finished, because an acceptance signature without a service route is a signature against an unpriced risk.
Scoring the result and signing the sheet
Score every section, not only the demonstration: documentation, physical condition, services at the position, the three published conditions, the behaviour checks, the duty patches, handover and upkeep. Use three columns - pass, open item, failed - and write the reason in the open-item column. Then close the sheet with three lines that decide what happens next: the defects the supplier must clear, the date each is due, and who signs the re-check. A short holdback clause written against that list is what turns the acceptance page from a receipt into leverage.
Sign only after the pass column reflects what was observed on site. Where an item is open, record it and carry it forward; where the machine genuinely did not hold the published conditions, that finding should be written plainly and the signature withheld. Both outcomes are useful: they create the record the rest of the machine's life is argued from.
A review date and the first production shift
Close the acceptance page with a review date, and put the first production shifts inside that window. After a fortnight of real work, compare how long tasks actually take, which conditions the team uses, what consumables were consumed, and whether the machine is reaching all the positions it was bought for. That note becomes the first line of the maintenance plan and the evidence base for the next purchase - and, if the fleet question arises, the place where the difference between a mobile unit and a plumbed position is settled by experience instead of by argument. Buyers weighing a plumbed installation alongside a carried unit should compare the mobile steam cleaning machine range with the fixed steam cleaning machine line before the review meeting, so the comparison is made against published scope rather than memory.
Note: this article describes an acceptance-check process a buyer can write for themselves. It does not restate unpublished technical figures for the machine, and it does not claim performance beyond the application scope published on this site's cleaning pages. Confirm every specification, warranty term and service commitment in writing with the supplier before signing an acceptance sheet.
