Why the brief decides the outcome more than the brochure
A cleaning machine for vehicle maintenance bays is sold against conditions the buyer knows and the supplier does not: how many vehicles, what kind, which tasks, what utilities exist at the bay, and what happens to the run-off. A supplier given only "we need a steam cleaner for our bays" will send a catalogue. A supplier given a written brief with those facts will send a configuration, a utility requirement and a price that survives installation. Write the brief as a short document with the same headings on every enquiry, so quotations can be compared line against line.
1. Duty and throughput
- Vehicle types and counts per shift: cars, vans, buses, trucks, plant or agricultural machinery, and whether any are driven in.
- The tasks in scope: exterior wash, engine or engine-bay cleaning, interior vacuuming and disinfection of cab or cabin, wheel arches and underbody, and parts or workshop-floor cleaning.
- Peak and average throughput per day, and the shift pattern the machine must serve.
- Whether cleaning happens inside a bay, on a hard-standing apron, or both.
This section is what lets a supplier choose between a fixed unit, a mobile unit and a driven machine. PowerDe's published listings show why the choice matters: the Fixed Steam Cleaning Machine PowerDe HW02 describes vehicle exterior cleaning at gas stations and parking lots, interior vacuuming and disinfection, and engine-compartment cleaning, on 220 V with 6 kW heating power, 160° steam temperature, 0.8 MPa vapour pressure and an 80 L tank — a fixed bay machine. The PowerDe PWD02 steam cleaner, by contrast, is listed as a driving-style mobile active-water machine with dry-steam, wet-steam and hot-water modes for indoor garages and narrow outdoor parking spaces, and is sold with and without a battery. State your duty and let the supplier justify which class they are recommending.
2. Site and utility facts, measured by you
Give the supplier the actual site data, not a description. Bay dimensions and clearances, door and gate widths, floor gradient and drain or gully positions, the interceptor or effluent arrangement in place, the electrical supply available at the bay with circuit details from your electrician, the water point and its fitting, frost risk and ambient temperature if the bay is open, and the route a machine will take if it has to move between bays. If the site is a heritage or shared building, add access restrictions. These facts determine tank size, whether battery supply is needed, cable and hose lengths, and whether an installation is feasible at all.
3. Technical requirements and the values you demand in writing
Ask for figures, not adjectives, and require them in the quotation. At minimum: heating power and supply; steam temperature and pressure; tank volume and fill method; water inlet fitting; mode selection and what each mode is used for; protection functions and how they are tested; noise; machine dimensions and mass; hose, lance and wand lengths; the accessory and nozzle list; for battery variants, the battery voltage, capacity, runtime and charger specification; and for fixed variants, the installed and peak electrical load. Note that not every PowerDe product page publishes all of these — the Hand Pushed Steam Cleaning Machine PowerDe HMW3 page, for instance, records dimensions, 4.5 kW heating power, a 50 L tank, 48 V battery supply and the hand-push mode of movement, while steam temperature, pressure, battery capacity, runtime and the accessory list are not stated. Ask for the missing values and hold the supplier to them as contract data.
4. Method, safety and compliance obligations
Put your own obligations into the brief so the machine fits them. State the PPE standard your site applies, the training and manual language your crew needs, the effluent rules you must meet for oil- and grease-laden run-off, the electrical rules for wet environments, and any customer-facing constraint — for a dealership or service centre, a cleaning method that cannot damage trim, badges, sensors or underbody coatings. Ask the supplier to confirm, in writing, which of your listed tasks the machine is intended for, which are excluded, and which approvals from the vehicle manufacturer are needed before steam is applied to an engine bay or cabin.
5. Accessories, consumables and spares
List the accessories you expect to use — lance extensions, angled heads, brushes, gun couplings, vacuum kit where interior work is in scope — and ask for the coupling specification and the limits of each option so third-party items can be checked. Then ask for the consumables and wear-parts list with part numbers and lead times, and a recommended holding stock. A bay that is down for a week waiting on a gun seal is not a saving.
6. Service, warranty and commercial terms to request
- Warranty start defined by commissioning, not shipment, with exclusions listed.
- Response time, remote support, and what your own technicians are authorised to repair.
- Commissioning and operator training included, with the duration stated.
- Documentation set: manual, wiring and charging guidance, parts list, maintenance schedule with intervals.
- Delivery, installation and any civil or electrical work split clearly between the parties.
Asking for a trial and a configuration
Add two closing demands to every brief. First, a trial on your own vehicles in your own bay, with the time per vehicle and the result recorded — the only figures that mean anything for throughput. Second, an explicit answer on configuration: PowerDe offers customised configurations and engineering support, so ask whether fittings, lance lengths, tank arrangements or a battery-versus-mains supply can be matched to your bays, and get the agreed configuration restated in the quotation. A brief that fixes duty, site data, required values, compliance obligations and service terms turns a catalogue response into a proposal you can compare — and the comparison is where the real cost of a bay cleaning installation is decided.
