Case erectors don’t usually break down at a convenient time. It usually happens mid-run—cases stacked up, operators waiting, and someone asking how long the line will be down. According to Craig Caruth, Field Service Technician at Wayne Automation, that moment is rarely caused by one dramatic break. It’s the result of small issues that were allowed to pile up.
A preventive maintenance (PM) routine is scheduled equipment care that focuses on inspecting, adjusting, lubricating, and replacing high-wear components before failures affect the line. In Craig’s words, “A proper PM routine will help identify issues before they escalate.” That difference, catching problems early versus reacting during a stoppage, shows up fast on the plant floor.
What Fails First When Preventive Care Drops Off
Reactive maintenance responds to stoppages. Preventative care focuses on correcting issues before they disrupt line operation. Craig sees the contrast often.
“Without a proper PM routine, you’ll definitely see an increase in emergency repairs,” he explains. “Components won’t last to their designated life expectancy.”
On a case erector machine, shortened component life raises operating costs because worn parts require frequent intervention and increase the risk of unplanned downtime.
“Reactive maintenance always uses more parts than preventative maintenance,” Craig adds. “You end up replacing assemblies instead of replacing individual wear parts.”
The Low-Cost Parts That Cause the Biggest Headaches
Most unplanned downtime doesn’t start with motors or frames. It starts with inexpensive components that don’t look urgent—until they are.
“A lot of unplanned downtime doesn’t start with a catastrophic failure,” Craig says. “It starts with minor, easily preventable parts.”
The usual suspects include:
- Belts that stretch or ride off pulleys
- Chains that elongate over time and throw off timing
- Suction cups that lose grip and cause misfeeds
- Sensors and proximity switches that drift out of alignment or collect dust
- Dry or contaminated lubrication points that accelerate wear
Craig often sees secondary damage follow these issues. “A chain stretching or a belt riding off a pulley will often damage other parts when they collide,” he explains. What could have been a low-cost swap during planned service turns into a longer repair window during production.
What Production Teams Tend To Miss
Selective maintenance creates blind spots. Craig is direct about this: “There is no one part or section of the machine that is more important than another.”
Mechanical drives, pneumatics, electrical systems, and lubrication circuits all need routine attention. Sensors are easy to forget because they’re small. Pneumatic systems often get skipped because leaks aren’t always visible. Over time, those oversights stack up, and the auto case erector starts behaving inconsistently even though nothing appears broken.
If any of these sound familiar, Craig usually traces them back to gaps in preventative care:
- Intermittent sensor faults
- Repeated belt or chain adjustments
- Inconsistent carton forming
Why Preventable Downtime Hurts More Than Expected
When a case erector goes down due to a preventable issue, the damage spreads quickly.
“When equipment fails due to poor preventative maintenance practices, the impact goes far beyond the broken machine,” Craig says.
Production stalls ripple through the line. Operators wait. Supervisors reassign people from other jobs just to keep orders moving.
Craig sums up the trade-off simply: “A low-cost PM task will turn into a high-dollar repair event.”
That field experience is backed up by industry data. Siemens reports that unplanned downtime costs heavy industry plants an average of $59 million per year and estimates that the world’s 500 largest manufacturers lose about 11% of annual revenue to unplanned downtime, with maintenance-related failures playing a significant role.
Why Planned Preventive Care Beats Reactive Repairs
Preventative care changes how maintenance teams work. “Planned maintenance is coordinated maintenance,” Craig explains. Instead of reacting mid-shift, teams address known wear components and routine adjustments on a schedule they control. That shift alone reduces the pressure that comes with emergency repairs.
Routine PM also simplifies case erector troubleshooting. When inspections and replacements follow a regular cadence, maintenance teams spend less time chasing symptoms and more time correcting root issues. Many problems disappear once maintenance teams restore normal operating conditions, rather than trying to compensate for wear during production.
Every case erector needs attention at some point. The question is whether it happens on your schedule or during a production stoppage.
Plan Your Case Erector Maintenance
Wayne Automation offers preventative maintenance options designed to move case erector service out of emergency response and into planned intervals. Programs can be scheduled per visit or set on a monthly, quarterly, or yearly cadence based on runtime and workload.
To reduce unplanned downtime and bring more structure to case erector maintenance, talk with a Wayne Automation representative about a preventative maintenance program.
Also, check out The Ultimate Guide to Case Erectors for a practical overview of machine setup, common failure points, and ongoing maintenance considerations.
