Here is the question set we work through with buyers of truck steam cleaning equipment before we put a model, a power supply and a tank size on paper.
1. Where does the washing physically happen?
This single answer splits the market in two. A depot with a concrete wash pad, a drain and a fixed water tap supports a stationary unit with a large tank and a mains power supply. A yard where the trucks are parked nose-to-tail in a loading bay does not.
For tight or unprepared space, the recommendation usually moves to a mobile unit that can be driven or pushed to the vehicle rather than pulling hoses and cables across the yard. The mobile units in our cleaning equipment range — the PWD01, PWD02 and HMW2 — are built for exactly this situation: narrow indoor garages and confined outdoor parking areas, with battery versions for places where no socket is reachable. Where a fixed point with 220 V supply and tap water does exist, the stationary HW02 is the more durable choice.
2. What power is available at the wash point?
Ask for the supply, not for a wish. A 6 kW heater running on 220 V needs a circuit that can carry it continuously, and a depot wired for lighting only will trip breakers on the first shift. Where the supply is unknown or absent, a battery-fed machine removes the dependency; where it exists, mains power buys longer run time and fewer charging breaks.
We ask which models the buyer is offered in battery and non-battery versions, and we match that to the site rather than defaulting to one. Most of our driving-style and hand-pushed machines ship in both configurations for this reason.
3. What exactly has to be cleaned, and how often?
"Cleaning the truck" means very different jobs. A body washed weekly is light duty. An engine bay, a chassis coated in road grime, or a bulk trailer interior washed between loads is heavy duty, and each one pushes the required temperature and pressure up.
The stationary HW02 delivers steam at 160° at 0.8 MPa with a 6 kW heater and an 80 L SUS304 tank, and switches between dry steam and wet steam — dry steam for cutting oil and grease on engine compartments, wet steam for loosening caked dirt on panels and wheel housings. It also carries a vacuum, which matters when the interior cab has to be done in the same pass. Those are the figures published in the HW02 specification sheet, and we quote nothing beyond them.
4. Is water access the real constraint?
Many yards have power but no tap at the wash point, or a tap with pressure that will not fill a tank in reasonable time. Steam machines are the practical answer where water is scarce, because they clean with far less of it than a pressure washer — but "far less" still needs a refill plan.
So we ask: what is the inlet situation, what fitting is on it, and how large a tank can be refilled between vehicles. The HW02 takes tap water through a 4-point internal-tooth joint (1/2 inch) into an 80 L tank. If the buyer's site has nothing but a hose reel and a bucket, that changes the recommendation, and we want to hear it before the order, not after.
5. Who operates it, and what can they lift or push?
A machine that one worker can drag across gravel is a machine that gets used. A machine that needs two people and a forklift gets used on launch day and then forgotten. We ask how many operators there are, whether they work alone, and how far they must move the unit between trucks.
Footprint and handling belong in the specification conversation for this reason. The HW02 measures 1,200 × 800 × 1,200 mm including handles — equipment that parks beside a wash bay, not in a store cupboard.
6. Which safety protections does the site actually require?
High-temperature, high-pressure equipment in the hands of a tired driver at the end of a shift is a different risk profile than the same machine in a supervised workshop. Buyers in depots, fuel stations and mixed-use yards are increasingly asked to name the protections their insurance or site safety rules expect.
We list them explicitly instead of hiding behind a count: leakage protection, short-circuit protection, high-temperature protection, high-voltage protection, water-shortage protection and high-voltage explosion protection are built into the HW02 and into the driving-style models. If a buyer's procurement checklist asks for something else, we would rather know that at the quoting stage.
7. What has to happen after the wash?
Runoff is a legal matter, not a housekeeping one, and requirements vary by region and by what the trucks carried. A supplier cannot advise on local discharge rules, but a good supplier asks whether the buyer has dealt with them, because the answer often changes the wash layout — and therefore the machine.
8. How is the equipment expected to be serviced?
Fleets buy in batches and expect parts and support to scale with them. We ask how many units the buyer is planning for, whether their own technicians will maintain them, and whether spare tanks, hoses and nozzles need to be stocked on site. That determines what we quote alongside the machine.
A short checklist for the next supplier call
- Wash location: fixed pad or moving between parking positions
- Power at that point: supply, voltage, or none at all
- Water inlet: tap, pressure, fitting size, refill routine
- Soil type: road grime, oil and grease, cargo residue, interior cab
- Frequency: daily, weekly, or per load
- Operators and handling distance between units
- Runoff and drainage position on site
- Fleet size and the service model you expect
Bring those eight answers to a supplier and the conversation turns from catalog browsing into a specification. Shenzhen PowerDe Automation Precision Equipment builds its cleaning machines in Shenzhen and works with buyers who arrive with this kind of brief; if you are scoping a wash programme for a truck fleet, send us the site details and we will tell you which model fits, including where our standard range does not.
