NETWORKING
INCORPORATING COLD CHAIN
5. QUALITY MATTERS: OEM VS AFTERMARKET COMPONENTS
Component quality is a significant factor in compressor reliability. Not all compressors, or replacement parts, are created equal. Field experience consistently demonstrates:
• OEM compressors with high-quality materials and precise engineering last far longer than lower-cost alternatives.
• Aftermarket or substandard components, such as valve plates, bolts or oil pump gears, can fail prematurely, sometimes immediately upon installation.
• Proper design and material selection influence lifespan, performance under load, and resistance to liquid slugging, vibration and thermal stress.
“ Technicians must balance cost considerations against long-term reliability,
Truebody being acknowledged at the end by Theo van der Linde( vice chairman – SAIRAC Cape Town Centre). educating end-users that‘ cheap’ alternatives may lead to higher operational costs and repeated failures,” adds Truebody.
6. ROOT CAUSE ANALYSIS: FINDING THE TRUE PROBLEM
“ Effective troubleshooting starts with methodical root cause analysis. You can’ t just replace a compressor and hope for the best. First, do a thorough visual inspection: look for burnt, blackened or coppered components, anything that hints at overheating, moisture or electrical issues. Next, review the system itself – check for low voltage, unbalanced phases, loose connections or mechanical faults that could be stressing the compressor. Oil and winding analysis are equally critical; verify that the lubrication is adequate, that viscosity is correct and that insulation integrity hasn’ t been compromised. Finally, compare current operating conditions against your commissioning baselines – pressures, temperatures and electrical readings – so you know exactly what’ s changed since startup,” says Truebody.
“ Skipping this kind of root cause analysis is a shortcut to repeated failures. Only by identifying the underlying system problem – whether it’ s electrical, mechanical or operational – can you implement a solution that lasts.”
7. KEY TAKEAWAYS FOR RELIABLE COMPRESSOR OPERATION
“ Commissioning is absolutely critical. One thorough commissioning session sets the baseline for reliable operation: it gives you a clear picture of pressures, temperatures and electrical performance before the compressor ever goes into full service. But commissioning alone isn’ t enough. If you replace a failed compressor without first fixing the underlying system issues, you’ re almost guaranteed to face repeat failures.“ Preventative maintenance is equally important. Regular inspections, oil analysis and ongoing monitoring catch small issues before they turn into costly downtime. And education is key. Too often, end-users focus on short-term cost savings and overlook the long-term benefits of proper commissioning and maintenance. Part of our job is guiding them, showing how the right investment now protects reliability for years to come,” says Truebody.
He notes that quality is equally important:“ OEM components are designed for the system and tested for performance. Aftermarket parts may save money upfront, but they can introduce unpredictable failure modes that compromise the entire plant. Finally, documentation and trending are essential. By tracking pressures, temperatures and electrical measurements over time, you create a roadmap for troubleshooting and proactive intervention. In my experience, careful commissioning, ongoing maintenance, quality components and thorough record-keeping are the steps that truly separate a reliable system from one that keeps failing.”
CONCLUSION
Compressor failures are rarely simple. They are the culmination of electrical, mechanical and system-related issues, often exacerbated by poor commissioning, substandard maintenance or inferior components.“ By applying rigorous visual inspection, root cause analysis, proper commissioning, and preventative maintenance, operators can significantly extend compressor life, prevent repeat failures and safeguard operational efficiency,” he notes.
At the heart of reliability is system thinking: a compressor does not fail in isolation. By understanding the interplay of electrical, mechanical and operational factors and by taking proactive measures, the industry can minimise downtime, reduce warranty claims and protect both capital equipment and customer relationships.
“ The lesson is clear: fix the system, not just the compressor. Every technician and engineer should embrace this philosophy to ensure long-term, trouble-free operation,” emphasises Truebody. CLA
6 6 www. coldlinkafrica. co. za COLD LINK AFRICA • September 2025
COLD LINK AFRICA www. coldlinkafrica. co. za March / April 2026