Food & Beverage
Washdown, water ingress and product-contact risk make lubricant identity, grease condition and contamination control especially important.
Food & Beverage programmes should connect equipment criticality, credible failure modes, representative samples, routine and triggered tests, response ownership and maintenance feedback.
Design the programme around how the assets fail.
Food plants combine gearboxes, conveyors, compressors, refrigeration and hydraulic equipment under frequent washdown. Food-grade approval does not prove that a lubricant remains clean or fit for service.
Use this guide to scope an oil-analysis programme; then confirm equipment-specific limits, methods and safety controls with the laboratory, OEM and site engineering team.
What to test—and why.
Routine panels create comparable history. Triggered tests answer a focused question after a trend change, inspection finding or operating event.
| Equipment | Fluids | Primary risks | Routine tests | Triggered / advanced tests | Sampling approach |
|---|---|---|---|---|---|
| Conveyors, mixers and gear drives | Food-grade gear oil and grease | Water, cleaning chemicals, wear, wrong lubricant | kinematic viscosity, karl fischer water, elemental analysis icp oes | pq index, analytical ferrography, ftir oil condition monitoring | Sample after representative production but avoid adding washdown water during collection. |
| Refrigeration compressors | Approved refrigeration oil | Moisture, acidity, refrigerant dilution, compressor wear | acid number, karl fischer water, kinematic viscosity | elemental analysis icp oes, ftir oil condition monitoring | Use sealed moisture-controlled sampling under refrigeration safety procedures. |
| Hydraulic and packaging systems | Food-grade hydraulic fluid | Particles, water, oxidation, pump wear | particle count, karl fischer water, kinematic viscosity | elemental analysis icp oes, acid number | Sample from a flushed live-system port upstream of return filtration. |
Controls that make the data useful.
- 01Verify lubricant identity and approved status separately
- 02Control washdown ingress at breathers and seals
- 03Use colour-coded dedicated sampling tools
- 04Tie abnormal findings to hygiene and product-safety procedures
Decisions the programme should improve.
- 01Lower contamination risk
- 02Longer bearing and gearbox life
- 03Better refrigeration reliability
- 04Documented proactive maintenance
Build a closed evidence-to-action loop.
A test panel becomes a reliability programme only when the sample, interpretation, response and field outcome remain connected to the same asset and compartment.
| Stage | Control | Evidence created | Decision |
|---|---|---|---|
| 1 · Baseline | Confirm asset, compartment, fluid, method, point and operating state | Comparable new or stable in-service reference | Define normal variability and initial interval |
| 2 · Routine surveillance | Collect at a fixed risk-based interval from the documented point | Trend of fluid condition, contamination and wear | Continue, monitor or request focused confirmation |
| 3 · Exception diagnosis | Use mechanism-specific tests, secondary points, filters and companion technologies | Independent evidence for or against the failure hypothesis | Protect, inspect, correct or revise the hypothesis |
| 4 · Verification | Repeat comparable evidence after maintenance | Post-action condition and rate of change | Close the work order or escalate |
| 5 · Programme learning | Record inspection findings, false positives and missed detections | Asset-specific failure signatures and improved rules | Change point, panel, interval, limit or procedure |
Translate severity into a defined response.
These are workflow classes—not universal pass/fail limits. Asset consequence, rate of change and site safety procedures control the urgency.
| Class | Typical evidence pattern | Minimum review | Possible response |
|---|---|---|---|
| Stable / Normal | Comparable results remain within the justified baseline and no corroborating distress is present | Confirm route and context are complete | Continue the planned interval |
| Monitor | A small deviation, unusual rate of change or incomplete contextual explanation | Check sample, top-up, maintenance and companion indicators | Clarify data, add one focused test or shorten the interval |
| Abnormal / Investigate | Unsatisfactory fluid, contamination or wear evidence with a credible developing mechanism | Confirm promptly using independent evidence | Inspect, control the source and plan corrective work |
| Critical / Urgent review | Rapid, severe or corroborated change with material equipment or safety consequence | Immediate qualified operational and engineering review | Apply site procedures; protect people and equipment before diagnosis continues |