| Production Capacity | Rated output of the complete line, including forming, cooling, cutting, and transfer sections. | Choose capacity from actual demand plus approximately 15–25% headroom. Confirm output in bars per minute and kilograms per hour. | High | Calculate required output from sales forecasts, working hours, product weight, and expected downtime. Request a production test using the intended recipe. |
| Automation Level | Availability of automatic feeding, syrup or binder dosing, slab forming, cooling, cutting, conveying, and recipe control. | A semi-automatic line may suit varied or smaller batches. A continuous automatic line is more suitable for stable, high-volume production. | High | List every manual intervention and estimate labor hours per shift. Check whether recipes, speed, temperature, and alarms can be controlled from one interface. |
| Product Flexibility | Compatibility with different bar weights, sizes, ingredients, binder viscosities, inclusions, and coating options. | The machine should support the required product range without lengthy mechanical changes or unstable feeding of nuts, seeds, fruit, or crisped grains. | High | Test the smallest and largest planned formats, plus recipes with sticky binders and fragile inclusions. Record changeover time and product loss. |
| Cleaning and Sanitation | Food-contact materials, access to conveyors and hoppers, removable parts, drainage, dead zones, and tool requirements. | Prefer stainless-steel food-contact surfaces, smooth welds, accessible inspection points, and removable components that can be cleaned without excessive dismantling. | High | Ask for a documented cleaning procedure. Time a full changeover cleaning and verify that residue cannot collect around scrapers, rollers, seals, or transfer points. |
| Food Safety and Hygiene | Hygienic design, allergen changeover controls, foreign-material prevention, lubrication controls, and traceable operating parameters. | Use food-grade lubricants where incidental contact is possible, segregate allergen-containing ingredients, and maintain records for cleaning and process checks. | High | Review the hazard analysis, material certificates, lubricant specifications, allergen procedure, and sanitation verification records before purchase. |
| Operator Safety | Guarding, interlocked access doors, emergency stops, hot-surface protection, pinch-point controls, and electrical protection. | All moving and hot areas should be guarded. Opening an interlocked guard should stop the relevant hazardous motion, and emergency stops should be accessible. | High | Perform a site-specific risk assessment. Test emergency stops and interlocks during commissioning and confirm that safety devices cannot be easily bypassed. |
| Temperature and Process Control | Accuracy and stability of binder heating, cooling tunnels, temperature sensors, and control alarms. | Temperature settings must match the recipe and remain stable enough to prevent poor binding, excessive stickiness, melting, or brittle bars. | High | Compare displayed and independently measured temperatures at normal operating speed. Check alarm limits, data logging, and recovery after short interruptions. |
| Cutting Accuracy | Cut length consistency, blade or wire adjustment, crumb generation, and performance with soft or hard products. | Cutting should maintain the required bar dimensions and weight tolerance while minimizing cracks, deformation, and loose crumbs. | Medium | Weigh and measure a representative sample from the beginning, middle, and end of a trial run. Record rejects and rework rates. |
| Changeover Time | Time required to change product dimensions, recipe settings, tooling, film, or packaging format. | Short, repeatable changeovers reduce downtime. Tool-free or quick-release adjustments are useful for frequent product changes. | Medium | Conduct a timed changeover with the same number of operators expected in production. Include cleaning, adjustment, calibration, and first-good-product time. |
| Maintenance Access | Access to bearings, belts, chains, heaters, sensors, pumps, cutters, seals, and electrical panels. | Routine service points should be reachable without removing large assemblies. Preventive maintenance tasks should have clear intervals and instructions. | High | Request maintenance drawings, lubrication points, service intervals, spare-parts lists, and an estimated time for common repairs. |
| Spare Parts and Technical Support | Availability of wear parts, response time, remote support, training, documentation, and local service capability. | Keep critical wear parts such as seals, belts, blades, sensors, and bearings available according to usage and lead-time risk. | High | Obtain a two-year spare-parts recommendation, warranty terms, training scope, and support escalation process in writing. |
| Energy and Utilities | Electrical load, heating method, compressed-air demand, cooling-water requirements, ventilation, and exhaust needs. | Utility requirements must match the facility. Include startup load and peak demand, not only average running consumption. | Medium | Compare the equipment utility schedule with available site capacity. Estimate energy cost per kilogram using expected operating hours. |
| Floor Space and Layout | Overall footprint, operator clearance, cleaning access, material flow, product flow, and future expansion space. | Allow safe access around the line and separate raw-material, processing, finished-product, and waste flows where required by the site hygiene plan. | Medium | Create a scaled layout showing utilities, walkways, maintenance zones, ingredient staging, packaging, and emergency access before ordering. |
| Total Cost of Ownership | Purchase price, installation, tooling, utilities, labor, cleaning, spare parts, downtime, and planned upgrades. | The lowest purchase price may not provide the lowest operating cost. Compare cost per acceptable bar over the expected service life. | High | Build a three- to five-year cost model using realistic output, labor, energy, maintenance, waste, and downtime assumptions. |