Facilities that switch from solvent wiping or pressure-washing to steam usually hit the same problem: nobody can say how long one machine actually takes. The estimate is needed for labour planning, for downtime windows, and for comparing a fixed machine with a mobile one. A defensible number comes from the dirt, the surface, the machine and the site — not from a generic figure.
1. Start with the surface, not the machine
Split the equipment into areas before you time anything, because the areas behave differently:
- Open flat surfaces (guards, housings, table tops) clean quickly and are where most of the area count lives.
- Seams, rolled edges, joints and bolt heads hold hardened grease and release it slowly. These need a dwell period after the steam is applied.
- Vertical and overhead surfaces. Condensate drains off quickly instead of sitting on the soil, so contact time is shorter and the same soil takes longer than on a horizontal face.
- Bearings, shaft ends, electrical boxes, sensor housings and cable runs are not steam targets. Wipe them; do not direct a jet at them.
- Coated, brushed or painted finishes can be scratched. Test one hidden spot before the surface is counted as cleanable.
Count each area once and note which of these five groups it belongs to. That count drives every number downstream.
2. Let the soil decide the pass count
Time per square metre is mostly a function of how much soil is on the surface and how long it has been there:
| Soil condition | Usual approach | Effect on time |
|---|---|---|
| Fresh oil, cutting fluid, splashing grease | Wet steam or hot water, wipe as you go | Shortest; usually one pass |
| Mixed oil plus dust, "black film" | Dry steam with dwell, then wipe | Moderate; dwell is the cost |
| Polymerised, tar-like grease | Dry steam, dwell, repeat | Longest; expect several passes |
| Dry particulate, chips, powder | Remove dry first, then steam | Steam time is small; the dry removal dominates |
| Sticky residue (adhesive, sugar, starch) | Soften, then lift | Variable; test before committing a window |
The dwell time is the number most facilities leave out of their plan. The fixed PowerDe HW02 steam cleaner page lists dry and wet steam modes and publishes 160°C steam temperature, 0.8 MPa vapour pressure, a 6 kW heater and an 80 L SUS304 tank. Ask us for the temperature and pressure measured at the nozzle for your configuration, because nozzle values — not tank values — set how long the dwell has to be.
3. Write the whole cycle down, not just the cleaning act
A realistic time per machine includes work that does not appear in a product sheet:
- Clearing the area and protecting what cannot get wet.
- Dry removal of loose soil.
- Steam passes, including dwell.
- Wiping or squeegeeing the released soil into a container rather than onto the floor.
- Moving the machine, hose and wand between areas, including doors, thresholds and tight aisles.
- Refilling water and, on battery models, accounting for runtime and charging.
- Drying the surface before production restart.
Timing step 3 alone understates the job. Time steps 1–7 on one representative machine and you have a number that survives a labour conversation.
4. Water, drainage and power set the machine class
The site conditions usually rule models in or out faster than performance does:
- Water supply. The HW02 is a 220 V fixed unit with an 80 L SUS304 tank fed from tap water. If the machine is far from a tap, refills become walking time.
- Drainage. With no floor drain near the equipment, the run-off has to be caught with cloths, a squeegee and a bucket — that is labour, and it belongs in the estimate.
- Power. A 6 kW heater needs a cable route that does not cross an aisle or a work area. Where routing is impractical, a battery-driven mobile unit removes the cable but adds runtime and charging to the plan. Our mobile and hand-pushed steam cleaning machines cover narrow aisles and indoor floor areas for exactly this reason.
- Hose and wand length. Reach determines how often the machine is moved. Ask for the lengths before you size the crew.
5. The five numbers to take from your own floor
Before we quote a configuration, we ask for:
- The number of machine surfaces per shift and the number of shifts per week, from your own inventory.
- A measured time for one machine, timed end to end with a stopwatch, including refills and walking.
- The distance from the cleaning point to the nearest water supply and to the nearest drain, and whether run-off must be contained.
- Aisle widths, door widths and thresholds that the machine has to pass.
- The downtime window you can actually give the cleaning crew.
Those five numbers decide whether a fixed 220 V unit, a battery mobile unit or a hand-pushed unit fits the job. As an intelligent cleaning equipment manufacturer, we would rather size against your measurements than against an assumed rate. If your soil is mostly fresh and light, tell us — a steam machine may be the wrong tool and a hot-water process may be cheaper.
6. Pre-purchase checks
- Run one steam pass on a hidden area of one machine and check finish, seams and drying time.
- List the seams, bearings and electrical points that are excluded from steam work, and keep that list with the procedure.
- Confirm how run-off will be contained at each machine.
- Confirm that any sanitation step in your own procedure — contact time, agent, verification — stays in place. Steam cleaning is a cleaning step; whether your hygiene requirements are met is decided by your own hygiene plan and your local authority, not by an equipment specification.
- Ask for the figures usually missing from the page: nozzle temperature and pressure, hose and wand lengths, accessories for the surfaces you have, noise level, and service intervals for heaters and seals.
Talk to us with your own figures
Send the surface count per shift, photos of the aisle and door route, your measured time for one machine, your downtime window, and what is available for water, drainage and power. We will come back with a machine class, the parameters above filled in, and a time estimate built from your numbers rather than a typical rate. Email sales@powerde.net.
