Why Regular Electric Motor Testing Is Financially Worthwhile for Cheese Processors
In a cheese processing plant, every hour of unplanned downtime costs approximately $20,000. That figure alone should make any operations manager think carefully about their maintenance strategy. Yet many facilities still run electric motors to failure, believing they are saving money by avoiding upfront testing costs. The reality is quite the opposite.
This article explores why regular testing of electric motors is a financially sound decision for cheese processors, drawing on the expertise of 3Phi Reliability, a specialist in Best Practice Motor Management and independent electric motor testing.
The Hidden Costs of Reactive Maintenance in Cheese Processing
When a motor fails unexpectedly in a cheese plant, the consequences ripple through the entire production line. The true financial impact includes:
- Unscheduled downtime: At $20,000 per hour, a single 8-hour failure costs **$160,000** in lost production alone.
- Product loss: Cheese in process—whether in vats, curd lines, or packaging—may be ruined if temperatures or processing times are compromised. Increased Waste Treatment Costs should be considered.
- Emergency repairs: Rush orders for parts and labor premiums are expensive and often unavoidable. Replacement Motor may not be the best specification or Acceptance Tested.
- Collateral damage: A failing motor can damage coupled equipment, such as pumps, agitators, or conveyors, compounding the repair bill.
- Safety and hygiene risks: Catastrophic failures can pose hazards to personnel and compromise food safety protocols. Especially when Earth Resistances are comprimised.
Most sites I visit only test a motor once it has failed, even if they have the available instruments. This strategy offers low upfront costs but creates expensive long-term consequences, including high downtime risk and costly emergency repairs.
The Financial Case for Regular Testing
Regular motor testing flips this equation. By detecting defects before they escalate into failures, cheese processors can move from reactive firefighting to proactive control.
1. Reduce Downtime by 12 Times
The most compelling financial argument for testing is its impact on downtime. According to data from 3Phi Reliability, good Electrical Preventative Maintenance can achieve a 12 times reduction in median hours downtime per failure—dropping from 96 hours to just 8 hours.
For a cheese processor, this translates directly to the bottom line:
| Scenario | Downtime Hours | Cost at $20,000/hour |
| Reactive (run-to-failure) | 96 hours | $1,920,000 |
| Proactive (regular testing) | 8 hours | $160,000 |
| Savings per failure | 88 hours | $1,760,000 |
Even a single prevented failure can pay for an entire year's testing program many times over.
Even if you have a Spare is it fit for use, and often that Downtime is still many hours.
2. Detect Defects Before They Become Failures
3Phi Reliability test data reveals that 13% of in service motors had detectable defects before failure. The Defects include:
- 17% stator winding defects
- 22% resistive defects (imbalances greater than 3%)
- 2.3% insulation resistance defects
Critically, 34% of Motors on average are connected to a drive, but accounted for 82% of the Winding defects. This statistic is particularly relevant for cheese processors, where VFDs are commonly used on pumps, agitators, and conveyor systems for precise speed control. These VFD-driven motors are especially vulnerable to winding degradation, yet many facilities do not test for these specific failure modes.
3. Energy Savings That Pay for Themselves
A failing motor is an inefficient motor. Impedance imbalance—caused by winding defects, rotor issues, or circuit problems—forces the motor to draw more current to deliver the same output, resulting in wasted energy and excess heat.
3Phi Reliability provides a concrete example: a facility identified and fixed defects including poor drive terminations, crimping issues, and loose connections, resulting in £3,500 per annum in recovered electrical losses on that single motor. For a cheese plant with hundreds of motors—running pumps, fans, compressors, and conveyors—these savings multiply rapidly across the facility.
4. Extend Asset Life and Avoid Premature Replacement
Regular testing provides the data needed to make informed repair-or-replace decisions. Without testing, cheese processors often replace motors prematurely or, conversely, continue running motors that are on the verge of catastrophic failure.
By establishing a baseline and tracking trends, predictive maintenance allows interventions to be timed precisely—replacing or repairing a motor only when necessary, and before a failure occurs. This maximizes the service life of each asset while avoiding the cost of unexpected breakdowns.
5. Improve Safety and Reduce Insurance Risk
Electrical regulations in many countries require annual inspection and testing on a three-year schedule. These regulations exist to ensure asset and personnel safety. Compliance reduces insurance risk and demonstrates due diligence.
In a food processing environment, the stakes are even higher. A motor failure that leads to a fire or contamination event can trigger product recalls, regulatory scrutiny, and reputational damage—costs that far exceed the motor itself.
The Cost of Doing Nothing
The survey data tells a clear story: facilities that implement condition monitoring maintenance practices experience uptime improvements, reduced safety risks, extended equipment life, and operating cost reductions. Those that don't remain trapped in a cycle of reactive repairs, emergency spending, and unplanned downtime.
3Phi Reliability experience confirms that elimination of motor failures is achievable. Some sites have reduced electric motor failures by more than 90% by implementing a comprehensive program of purchase specifications, acceptance testing, motor health assessments, and good termination practices. These same sites cut bearing spend in half and significantly reduced total cost of ownership.
The Bottom Line for Cheese Processors
At $20,000 per hour of downtime, the math is unforgiving. A single unexpected motor failure during peak production can cost more than the entire annual budget for a predictive maintenance program. Regular testing is not an expense—it is an investment with measurable returns:
- Reduced downtime: 12x fewer hours lost per failure
- Recovered energy: Lower electricity bills across the plant
- Extended asset life: Fewer premature replacements
- Improved safety: Lower risk of fire, injury, and product contamination
- Peace of mind: Knowing your critical motors are healthy before they fail
For cheese processors still relying on run-to-failure, the question is not whether they can afford to implement regular testing, but whether they can afford not to.
Learn more about 3Phi Reliability Best Practice Motor Management programs and how they can help your cheese processing facility achieve these results.
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"headline": "Stop Bearing Fluting Currents at the Source",
"description": "Explains how high‑frequency bearing currents from variable‑speed drives (VFDs) cause bearing fluting, insulation and lubrication damage — and how proper grounding plus installation of EMF cores effectively reduces harmful currents by over 99%, protecting motor bearings, lubrication and insulation.",
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