Steam at 160 °C softens the film that forms on a machine enclosure, but the same heat can lift a coating, cloud a plastic window or push water into a seam that cannot drain. Before any enclosure in the plant is put under a lance, the buyer needs three answers: which surfaces may go under steam, what the soil on them actually is, and what the machine on site can deliver. The checklist below is written for those three answers, and each line ends in an action rather than an opinion.
Answer 1: which surfaces are in scope, and which are ruled out
Write the list down before the first pass, because the surface decides everything else. In scope on most machine shops: painted or powder-coated outer guards, sheet enclosures, chip-conveyor housings, cast bases, stainless covers, and the outside of electrical cabinets where doors are closed and latched. Out of scope: guideways, way covers from the inside, tool cones and tapers, spindle noses, work tables, linear bearings, ruler and scale glass, optical screens, paper labels and painted nameplates, and any panel where the paint is already lifting. A surface that is already failing will fail faster under heat, so the exclusion list is not a preference; it is the condition of use. Where the same duty runs across several cells, the list is repeated per cell, since the reach and the drying route change with the layout of the PowerDe cleaning equipment position, not with the model number.
Answer 2: what the soil is, and whether the machine can move it
Cutting oil, way oil, graphite dust, fine swarf, dried coolant and shop dust do not release in the same way. Oil film needs heat plus a wipe; dried coolant needs a dwell; fine swarf blows around instead of lifting, so loose debris is removed mechanically first, then the surface goes under steam. Run one measured strip of the real soil, at a marked nozzle distance, and time it: single dry-steam pass, or wet steam plus wipe, or dwell and a second pass. Record what a white cloth shows after one wipe over an area that looked clean. Judge the machine against that result: the fixed high-pressure steam cleaning machine PowerDe HW02 is listed at 6 kW heating power, 160 °C steam temperature, 0.8 MPa vapour pressure and an 80 L SUS304 tank on a 220 V supply, which is the class of output heavy oil film requires. Battery or hand-pushed units are chosen for movement between cells; their published data does not state steam temperature or pressure, so they are judged on the strip test, not on the figures of the fixed unit.
Answer 3: what the site allows, on power, water and drainage
Three site conditions decide whether the job can be done at all. Power: the mains unit needs a 220 V supply within cable reach, and the cable route must not cross a finished floor or a walking aisle. Water: the fixed unit takes tap water through a 4-point internal-tooth (1/2 inch) inlet, so a tap and a hose run must exist where the machine is parked. Drainage: the enclosure must shed water to a floor that can take it, and the floor must be dry enough to walk on at the end of the shift. Also confirm the machine itself: the fixed PowerDe unit lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, and the operator who runs the job must know what each one does and what it stops them doing. For enclosures with no drainage path, a moveable unit and a dry wipe finish are the safer pattern, and the choice is documented as a rule, not as a preference.
Answer 4: who cleans, to what instruction, and at what distance
A checklist with no owner produces a different result on every shift. State, in one page: the nozzle distance and the number of passes for each surface type, which covers may not be opened, what must be masked or shielded before spraying, how the drying pass is done, and who signs the line after the job. Nameplate surfaces, plastic windows and lamps get a cloth and no lance. Keep the trigger distance the same for the whole crew, because most coating damage comes from a nozzle held too close for too long in one spot. Any new surface type is added to the instruction only after it has been tested on a hidden area of the same material.
Answer 5: what the programme is for, and how it is judged
Steam on an exterior is a maintenance and housekeeping duty, not a precision measure. Write the target honestly: an enclosure clean keeps oil from building into a floor puddle, keeps labels and inspection marks readable, and lets a leak at a joint or a weeping seal be seen during a walk-round. It does not improve part quality, spindle accuracy or surface finish, and a checklist that promises those things will be ignored by the people who use it. Then measure four things weekly: minutes per enclosure against the old wipe-by-hand time, whether the crew finished drying inside the shift, count of coatings or labels damaged during cleaning (target zero, investigated when not), and the number of defects a walk-round found that the previous month missed. If those numbers do not move after a month, the instruction is wrong, not the method.
Turn the answers into one sheet, and keep it with the machine
The finished checklist is one A4 sheet: allowed surfaces, excluded surfaces, soil type and the pass pattern that removed it, nozzle distance, masking list, drying rule, power and water source, drainage rule, owner, and the four weekly measures. Pin it to the machine, dated, with the name of whoever ran the strip test. Photographs of the enclosure, the soil and the test strip belong with the sheet. PowerDe lists intelligent cleaning equipment with customised configuration and engineering services, so a plant can send that sheet plus the photographs to sales@powerde.net or +86 13023198376 and get a model and method recommendation for the actual enclosure instead of a general catalogue answer.
