What a conveyor line actually presents
Conveyors are not one surface. A belt or slat carries the product. Side guides and frames keep it tracked. Rollers, sprockets, and drive units turn it. Legs and cross braces hold it above the floor, and the floor beneath it collects whatever falls off the moving parts. Residue is not uniform across those zones either: the contact surface takes what the product leaves behind, the mechanism takes lubricant and airborne oil, and the floor takes the drip line.
That layering is what decides whether a portable unit fits at all. Heat is what separates bonded grease from a surface; spray pressure is what lifts loose debris once heat has softened it. A machine that cannot hold heat while being carried from one section to the next will spend its working time recovering temperature rather than cleaning. Reachable surfaces and closed surfaces need different answers, and a fit study is mostly a list of which parts of the line can be opened without a maintenance call.
What has to travel with the unit
A portable factory machinery degreasing setup is judged by what it can sustain between the water fill and the drain point. A carried unit holds its own water, heats it, and supplies it through a lance and nozzle set. Everything the operator needs — brush, collection cloth, containment tray for the run-off, the fitting that mates to the plant supply — has to be moved by the same person or fetched from a trolley.
Three capacities decide the working window. The tank sets how many metres of line can be treated before the unit is refilled. The heating stage sets how quickly the unit recovers after the lance has been open. The supply connection sets whether the unit can be topped up in place or must walk back to a tap. Ask for the published figures from the supplier's product record and hold them against your own installation before buying: the working voltage, the water inlet arrangement, and the tank size are the three that decide whether the machine matches the room it is being sent into.
The line is a map of obstacles
Under-line clearance is the first hard limit. Where legs and cross braces sit low, a wheeled unit cannot pass beneath and the operator works beside the line instead of along it. Where the frame is continuous, the lance has to reach over the structure, which shortens the useful length of hose and changes the angle at which heat meets the surface.
Guards and covers are the second limit. Sections that unlatch quickly can be opened and cleaned to bare surface. Sections bolted on with tools are usually left closed, and whatever is under them stays as it was. Drives, bearing housings, junction boxes, and cable runs are third, and they are excluded rather than cleaned: directed spray at a seal or an enclosure trades a clean surface for a bearing failure or a fault later.
Floor access is the fourth limit and it is the one most often missed. Run-off falls. If there is no drain under or beside the line, then the volume that can be applied is limited to what a tray can catch, and that ceiling applies whether the unit is portable or plumbed in.
Where a carried unit stops and a plumbed one starts
The carried unit stops when the work becomes continuous along a long line. Every fill, every drain, and every heat recovery is time the operator spends not touching the conveyor. The same machine remains the right answer for short runs, for a line cleaned on a long interval, and for the sections that a fixed installation cannot reach at all.
Where customized steam cleaning equipment belongs is the case where one plant has several lines with the same residue, the same interval, and the same drain arrangement. Then a fixed position with a supply and a drain does the work the carried unit keeps interrupting. Many facilities land on both: a plumbed position for the long runs and a carried unit for the ends, the frames, and the lines cleaned less often. Ask for the survey and commissioning service, which produces the specification your installation has to satisfy rather than a catalogue page.
Exclusions are decided one machine at a time
Write the exclusion list before the trial, not during it. Sealed bearings, gearbox housings, electrical enclosures, cable glands, and any joint whose sealing was specified by the line builder are out. Product contact surfaces, open bearings, and guide rails are in, with collection placed under them. Belts and slats with a manufacturer's cleaning instruction follow that instruction; where none exists, heat is kept away from the belt edge and the cleaning works on the exposed face.
Where the line feeds an inspection or packaging step, the trial is scheduled so that the cleaned section is dry before product returns to it. A damp conveyor at a transfer point is a different problem than a dirty one, and moisture carried into the next station is recorded as a finding of the trial, not accepted as the cost of cleaning.
Prove the fit on a taped section
Mark a short length of line and clean nothing else. Record what the operator could open, what had to be excluded, how far the unit travelled before it needed a refill, and how long the surface stayed dry enough to run product. Note the residue that did not lift and what the operator did about it. This is the same method used to size industrial steam cleaning equipment for any other duty, and it produces the numbers a purchasing decision needs: passes per section, fills per line, exclusions per machine, and drying time before restart.
Then decide the interval, and give it an owner. A conveyor that is cleaned once a year and a conveyor that is cleaned between product changes need different machines, and the choice only becomes clear once the interval is written down next to the person who performs it.
A short fit checklist
Under-line clearance for the unit's wheels. Sections that open without tools. A written exclusion list naming drives, enclosures, and sealed joints. A drain or a containment tray under the section being cleaned. The working voltage the room can deliver. The water inlet arrangement. The tank size the operator must haul. A taped trial length with the fills, passes, and drying time recorded. An interval with a named owner.
A mobile unit fits a conveyor line when the line can be reached without dismantling it, when the carried water and heat cover one section without interruption, and when the run-off can be caught. Where those three hold, one operator and one machine do the job. Where they do not, the line needs a plumbed position, and the mobile unit goes back to the sections it was always better suited to.
