The relentless pace of production in modern potato-processing plants makes equipment maintenance a critical factor for both profitability and safety. Every machine on the line, from slicers and fryers to cooling tunnels and packaging systems, must operate at peak efficiency under strict hygiene and food safety requirements. 

By Tudor Vintiloiu

For plant managers, the challenge is to balance the need for continuous output with the inevitability of mechanical wear and the ever-present risk of downtime.

The foundation of any approach lies in how maintenance is defined and scheduled. Preventive maintenance remains the cornerstone: a structured program of cleaning, lubrication, inspection, and part replacement designed to stop failures before they occur. In parallel, predictive maintenance is becoming more common in the food industry. By monitoring operating data such as vibration, oil quality or temperature, predictive techniques enable technicians to anticipate problems before they cause interruptions. Together, these approaches create a framework that minimizes unplanned stoppages, safeguards equipment life, and ensures compliance with strict food safety rules.

The decision of when and how to carry out maintenance is not left to chance. In most factories, the responsibility lies with a dedicated maintenance planner, working closely with production managers. Their task is to integrate maintenance requirements into the overall production calendar. This collaboration is crucial: every hour of downtime represents lost output, but cutting corners on maintenance risks greater losses later. In practice, some tasks can be completed while equipment is running, particularly those based on sensor monitoring and condition analysis, but most work still requires production to pause. Planned shutdowns, often carried out at night or during low-demand windows, are carefully negotiated between maintenance and production teams to balance short-term efficiency with long-term reliability.

Equally important is the question of who performs the work. In larger factories, a division of responsibilities is common: skilled mechanics or technicians handle complex repairs and servicing, while operators are increasingly trained to carry out first-line checks. This dual approach reduces the risk of unnoticed faults, integrates equipment knowledge into daily operations, and reinforces accountability across the production team. The guiding principle is that maintenance is not an isolated function but part of the plant’s operational culture.

From Planning to Practice

Real-world practice shows how structured maintenance schedules are developed and enforced. At Frito-Lay, one of the world’s largest potato snack manufacturers, the company highlights the importance of formalized planning: “A master preventive maintenance schedule, built using national PM routines and cycle count/run hours, is documented and followed for every piece of equipment in the facility.” This approach ensures consistency across multiple plants while allowing adjustments to local operating conditions. It also illustrates the priority given to maintenance, which is treated as part of production rather than as an afterthought.

The collaborative nature of scheduling is also underlined by plant staff: “We work with production to prioritize all that needs to get done,” one reliability manager explained for Machinery Lubrication magazine, adding that “If we haven’t had the downtime windows that we need, we may have to explain why the PM takes priority.” This reflects a common industry reality: while production managers naturally push for maximum uptime, the credibility of the maintenance team depends on proving that preventive interventions avoid larger disruptions later.

Specialized companies supporting the potato industry echo this philosophy. Equipment supplier LONKIA Machinery advises processors to adopt a predictive mindset: “Implement a Predictive Maintenance Schedule. A proactive maintenance approach helps detect potential failures before they cause serious downtime.” Their guidance extends to practical tasks such as regular cleaning of de-oiling systems, inspection of packaging equipment calibration, and the maintenance of sensors that control line performance. By tying predictive maintenance to concrete activities, LONKIA illustrates how theoretical concepts translate into daily routines on the factory floor.

Another perspective comes from Union Machinery, which emphasizes hygiene and documentation. The company advises that every maintenance activity should be recorded and analyzed, both to optimize future schedules and to provide traceability in the event of food safety audits. This reflects a broader trend: maintenance is no longer judged only by mechanical reliability but also by its role in demonstrating compliance with global standards on sanitation and traceability.

You can read the rest of this article in your complimentary e-copy of Issue #2 of Potato Business Digital magazine, which you can access by clicking here.