A conveyor in a factory rarely fails because of one dramatic event. It wears down through a slow build-up of dust, spilled product, oil mist and residue that works into rollers, belts, bearings and drive components. Before any cleaning programme is agreed with a supplier, someone needs to walk the line and decide what actually has to be cleaned, how it can be reached, and what the plant can tolerate during the work. That walk-through is the site assessment, and the quality of the cleaning plan depends on how much of it is recorded properly.
1. What is being conveyed, and what falls off it
Start with the material on the belt. Fine powder, grain, packaging film, metal swarf, food residue and lubricant all leave different deposits in different places, and each one dictates a different cleaning method. A record should state the product or material handled on each section of the line, the shift pattern, and whether the line runs continuously or has predictable downtime. This is the point where a cleaning supplier starts asking questions such as how often the deposit becomes visible, whether it hardens if left overnight, and whether it is combustible or has to be removed to meet a hygiene requirement.
2. Construction of the conveyor itself
Note the belt type, frame material and the fixed items around the line. Stainless frames tolerate wet cleaning far better than painted carbon steel, and a belt with a textured surface holds residue that a smooth one does not. Record drive units, gearboxes, rollers, scrapers, side guards, hoppers, sensors, junction boxes and cable trays, because each of those is a component someone will have to work around. Anything electrical that cannot be covered or isolated should be flagged in writing at this stage rather than discovered on the day.
3. Access, height and the space around the line
Measure the clearance on both sides of the line, the aisle width at each end, and the headroom above it. Overhead sections, inclines and conveyors mounted under a mezzanine usually require platforms or a different working method, and a machine that fits through the plant door still has to be pushed to the bay. Also record the floor surface, drainage gullies, and how far the nearest water connection and power supply are from the section being cleaned. These practical details determine whether a small hand-pushed unit is enough or whether a larger self-contained machine has to be brought in.
4. Utilities available at the point of work
For each area, note the supply voltage available, the length of run needed, whether compressed air is present, and where waste water can go. A factory that wants dry-steam cleaning will still need water for the machine tank, so the assessment should say where the machine can be refilled without dragging hose across a walkway. Where water cannot be used at all, that constraint belongs in the report, because it changes the cleaning method rather than just the equipment choice.
5. Production constraints and cleaning windows
Write down how long the line can actually be stopped, who authorises the stop, and whether cleaning can be done section by section while the rest of the line runs. In many plants the real window is a planned changeover or a weekly maintenance slot, so the cleaning sequence has to be built around that. Note the lockout and tag-out procedure that applies, and any permit-to-work requirement for working at height or near live equipment. A cleaning method that takes four hours is not viable on a line that can only be released for ninety minutes.
6. Existing cleaning practice and its problems
Ask the operators what they do now. A site assessment that ignores current practice loses the most useful input available: the places where a broach cannot reach, the parts people stop trying to clean, and the residue that keeps returning. Record the detergents currently in use, whether they are approved for the product area, and how long a clean currently takes. This gives a baseline to compare against, without assuming that any particular machine will beat it.
7. Standards, hygiene and safety drivers
State which rules the cleaning has to satisfy: food-contact requirements, customer audits, internal hygiene schedules, fire precautions around combustible dust, or workplace exposure limits. Where the driver is microbial control or a hygiene audit, cleaning and sanitising are separate steps and the assessment should say so rather than implying that one machine does both. Where combustible dust is present, the assessment must specify the handling method before anything is washed down.
8. What the cleaning equipment has to satisfy
Convert the findings into requirements before looking at machines. Typical requirements are a supply voltage already available on site, a tank capacity that covers the cleaning window without constant refilling, the choice between dry steam, wet steam and hot water, whether the unit moves under its own power or is pushed by an operator, and what protections the machine provides for the operator. For a fixed line that is cleaned on a schedule, a stationary unit plumbed to a water and power point is often easier to manage than a mobile one. For a line that is cleaned at several points across a plant, mobility is the deciding factor.
PowerDe builds both patterns. The Fixed Steam Cleaning Machine PowerDe HW02 is a 220 V unit with dry steam, wet steam and vacuum functions, listed at 6 kW heating power, 160 °C steam temperature and 0.8 MPa vapour pressure with an 80 L stainless tank, which suits a fixed cleaning position. Where the assessment shows several cleaning points along the same production area, the Cleaning Equipment Series also covers hand-pushed and driving-style machines with dry steam, wet steam and hot-water modes. The full set of Solutions pages covers how equipment can be specified around a customer's own line layout rather than chosen from a catalogue.
9. Cost, frequency and who owns the work
The assessment should end with an owner and a frequency. Name the team that will do the cleaning, the consumables it needs, and how often each section is done. A line cleaned thoroughly once a month and left in between behaves differently from one given a short daily clean, and the equipment choice reflects that. Comparing the time spent on cleaning now against the time the agreed method takes is the simplest way to judge whether the programme is working.
What the finished assessment should contain
- Material and product handled on each section of the line, plus shift and run pattern
- Belt type, frame material, drive components and fixed items around the line
- Clearances, headroom, access routes and floor and drainage conditions
- Available power, water, refill points and waste-water route
- Permitted stoppage window, isolation procedure and permits required
- Current cleaning method, detergents in use and time taken
- Applicable hygiene, dust and safety requirements
- Equipment requirements derived from the above, not chosen from a brochure
- Cleaning frequency and the team responsible
A site assessment is not complete until these items are written down. Once they are, the conversation with a cleaning equipment supplier becomes short and specific: which machine covers the stated window, at the available supply, to the required standard. Send the line layout and the operating constraints to sales@powerde.net if you want that review done with the equipment specified against your own line.
