A vertical storage carousel upgrade doesn’t always mean starting from scratch. A machine can run for years while slowly getting slower, less reliable, and harder to support. This can happen long before it actually breaks down. It might still cycle through trays, but take longer to do it. It might need more repair calls than before. It might run on a controller that is well past its best years. Spotting these signs early is what makes a vertical storage carousel upgrade a smart, cost-effective move instead of a last-minute scramble.
None of this shows up as one big failure. Instead, it shows up as downtime, wasted labour, and missed picks. These problems build up over time.
This guide covers five signs that your vertical carousel may need an upgrade or refurbishment. It also explains what that work involves, and when replacement makes more sense.
Your vertical carousel may need attention if it breaks down often, or if picking has slowed down. Other signs include an outdated PLC or controller, safety controls that need a review, or software that no longer fits your workflow. None of these signs mean you automatically need a new machine. An inspection is the best way to find out whether an upgrade, refurbishment, or replacement is the right call.
There is a difference between a machine that still works and a machine that still works well. A carousel can run for years after it stops performing at its best. The signs are usually gradual. A bit more downtime here. A slower cycle there. A technician visit that used to happen once a year now happens every few months.
Left unchecked, small issues tend to add up. Downtime stretches across a shift. Maintenance costs climb year after year. Retrieval speeds drop, so operators wait longer and pick less. Electrical and control parts get harder to find as manufacturers move on to newer models. Software stops talking properly to your other warehouse systems.
Age alone does not mean an older carousel is unsafe or beyond saving. It means the system deserves a proper look before you decide what to do next. That is really the point of a carousel refurbishment or upgrade. You match the machine’s condition to what your operation needs today. You do not write it off just because it has a few years on the clock. A well-kept ten-year-old carousel can still beat a badly matched new one. A five-year-old carousel with a failing controller can already be holding a business back.
Vertical Carousels Australia (VCA) has worked on automated storage systems across Australia and New Zealand for more than 30 years. That is over 500 installations. This work covers preventative maintenance, emergency repairs, relocation, electrical upgrades, PLC replacements, and safety upgrades. So an ageing system can be judged on its real condition, not written off just because of its age.
For Sydney businesses working in tight warehouse space, an existing carousel’s output matters. It is often a key part of the choice between refurbishment and replacement. A carousel is built to make good use of available space and speed up picking. If its performance has slipped, those benefits slip too.
A vertical carousel upgrade means improving specific parts of an existing carousel, rather than replacing the whole machine. Depending on its condition, this might include the PLC or controller, electrical parts, sensors, safety controls, drive components, or software. The goal is to extend the machine’s working life and improve its reliability, where the existing structure is still sound.
A single repair does not mean much on its own. Machines wear, and parts fail. That is normal. What matters is the pattern.
Are you calling a technician more often than you used to? That is worth noting. Do the same parts keep failing? That is worth noting too. Do repairs feel reactive rather than planned? That is usually a sign your carousel needs a proper look.
Typical wear points on an ageing carousel include:
One of these parts failing now and then is not unusual. Several of them failing again and again is a different story. So is a maintenance bill that climbs year on year. Both point to a system that may need an upgrade, rather than another one-off fix.
A preventative maintenance plan makes this pattern easier to spot. Service reports get kept in one place, instead of scattered across invoices from different technicians. If you cannot easily say how many call-outs your carousel has had this year versus last year, fix that first. It is hard to judge whether you need an upgrade without that history.
The controller, or PLC, is a key part of the system’s control set-up. It manages functions such as positioning and sequencing. The wider control system may also handle safety interlocks and talk to other equipment.
As the controller ages, problems are not always obvious at first. Replacement boards can get hard to find. Technical support for older hardware gets thinner over time. The system may struggle to talk to newer warehouse equipment. Troubleshooting also takes longer, because fewer technicians know the old platform well.
An outdated controller does not automatically mean the machine is unsafe. But it does make maintenance, support, and future upgrades harder than they need to be. It is worth checking whether the control system should be modernised.
A controller or PLC upgrade can be an effective way to modernise an existing carousel, without replacing its whole structure. This works best when the mechanical system underneath is still sound. In some cases, a targeted upgrade like this can fix real reliability and support problems. It does this without the cost of a full replacement. It is also one of the clearest examples of a targeted carousel refurbishment. The frame stays in place. The electronics that run the machine get brought up to date.
Sometimes a carousel is technically fine but has quietly turned into a bottleneck. Operators wait longer for trays to arrive. Queues build up during busy periods. Orders take longer to get out the door. Staff find manual workarounds just to keep things moving.
These delays rarely show up as one big event. If an operator waits a few extra seconds per cycle, that seems trivial on its own. Multiply it across hundreds of picks a day, though, and it adds up to real lost time. If your team is getting less done than before on the same machine, that is a sign. If new staff need workarounds that experienced staff never needed, that is a sign too.
Where the data exists, compare current output with what the machine delivered when it was newer. A steady drop in picks per hour is a useful signal. It is better than a general feeling that “things seem slower.” It also gives a technician something concrete to check.
This is an area where it pays to be precise, not alarmist. The safety rules that apply to an automated storage system depend on the equipment and its design. They also depend on how it is used, and the rules that apply to your specific workplace.
SafeWork NSW is clear on this point. Businesses that manage or control plant equipment have a duty to keep it from putting workers or others at risk. That plant also needs to be properly maintained, with risks actively managed. This covers things like guarding, interlocks, and presence-sensing devices around moving parts.
In practice, the assessment may include checking:
A few situations are worth flagging for review. Your carousel’s work area may have changed. Staff turnover may mean fewer people remember the original safety training. Or it may simply have been a while since the safety systems were reviewed. A competent person can check the machine against what is needed for your site. If you are unsure where your system stands, do not assume it is fine. And do not assume it needs replacing either. Get it checked.
A carousel that was a perfect fit ten years ago might not suit your business today. This shows up in a few ways:
None of these issues mean the machine is broken. They mean it has outgrown its original job. That gap is exactly what a targeted upgrade, better software, or a rethink of your storage set-up is meant to close.
This sign is often the easiest to miss, because nothing is technically failing. The carousel still runs. Staff still get orders out. There is rarely one clear moment where it becomes obvious the system needs attention. It is usually a slow build-up of small workarounds. Added together, they mean the business is working around the storage system, instead of the other way round.
| What you’re seeing | Possible issue | What to investigate |
|---|---|---|
| Frequent breakdowns | Component wear | Maintenance history and mechanical inspection |
| Controller faults | PLC obsolescence | Controller replacement or upgrade |
| Slow retrieval | Performance drop | Cycle times and drive system |
| Safety concerns | Ageing safety controls | Safety assessment |
| Software problems | Integration limits | PLC, software, and WMS integration |
| Capacity problems | Business has outgrown the system | Storage needs and replacement options |
Monitor — keep an eye on it, no action needed yet:
Investigate — worth a proper look soon:
Act promptly — don’t wait on these:
An upgrade does not have to mean touching the whole machine. Most of the time, it targets specific parts of the system.
| Component | Why it may need upgrading |
|---|---|
| PLC / controller | Obsolete hardware or limited technical support |
| Sensors | Reliability or positioning issues |
| Electrical system | Ageing components or parts availability |
| Safety controls | Risk-control improvements may be needed |
| Drive components | Wear or reduced performance |
| Software | Integration or inventory-management needs |
For example, VCA regularly sees carousels where the frame and drive system are still sound. But the control system has become hard to support. In cases like this, replacing the PLC and updating the safety interlocks can often fix the core reliability problem. The frame does not need to be touched at all. The result can be a modernised system that keeps its existing structure, while fixing specific control, reliability, or support issues.
Once you have spotted one or more of these signs, the next question is what to do about it. Broadly, you are choosing between refurbishing what you have or replacing it. The right answer depends on the machine’s condition, not its age alone.
Refurbishment or upgrade typically involves:
Full replacement tends to make more sense when:
Refurbishment is not always the better option. Neither is replacement. Two businesses with the same brand and age of carousel can land on different answers. One might have a sound structure and drive system, but an outdated controller and worn sensors. A targeted refurbishment fixes that. The business keeps a machine it already knows how to run. The other might have the same age of machine, but a structure damaged by years of load imbalance. Or a workflow that has truly outgrown the unit’s capacity. In that case, refurbishment would only delay a replacement that is already needed.
An inspection tells you which situation you are actually in.
| Factor | Upgrade / Refurbishment | New System |
|---|---|---|
| Upfront cost | Often lower, depending on scope | Usually higher |
| Existing structure | Kept where suitable | Replaced |
| Downtime | Can be lower, depending on the work needed | May involve removal, install, and commissioning |
| Technology | Modernised selectively | Fully current technology |
| Capacity | Limited by the existing structure | Can be built around current needs |
| Lifespan | Can extend useful working life | Provides a new equipment platform |
| Best suited to | Sound equipment needing targeted work | Equipment that’s no longer suitable or obsolete |
Refurbishment and replacement are not the only two options. VCA also supplies fully refurbished used carousels and VLMs, typically backed by a 12-month limited warranty. It is a middle path for businesses that need to move on from their current machine. It skips the cost and wait time of a brand-new unit. For more detail on how new and used systems compare, read our comparison of new versus used vertical carousels.
There is no standard price for vertical carousel refurbishment. The same goes for a smaller, targeted upgrade like a controller replacement. The price depends on:
A professional inspection is the best way to find out. It shows whether refurbishment, or a smaller upgrade, is worth the cost for your system.
The timeframe varies by machine and scope. A simple component upgrade, like replacing a single sensor or updating software, takes far less work. A full mechanical, electrical, and controls refurbishment takes much longer.
Duration depends on the scope of work and the size of the machine. It also depends on parts availability, and whether electrical, software, or safety changes are involved. For a realistic timeline, the best step is to have your system assessed. That way the scope can be properly worked out first, rather than working off a generic estimate.
Yes. In some cases, an old vertical carousel can be upgraded with modern safety controls. Whether it is possible depends on the machine, its design, and its condition. It also depends on the rules that apply to how it is used. A competent assessment is needed before deciding whether an upgrade is the right move.
Work in this area can include better guarding, emergency stops, sensors, interlocks, and electrical or control upgrades. No upgrade can promise full compliance on its own, so be wary of anyone who claims otherwise. What a well-planned upgrade can do is improve an older system’s safety controls to address the requirements identified during the assessment.
Refurbishment is usually worth considering when:
Replacement is worth considering when:
If you are still unsure, compare costs. Weigh the proposed refurbishment against the cost and benefit of a replacement system. That comparison, backed by a proper inspection, usually makes the decision much clearer than guesswork.
Vertical Carousels Australia (VCA) is a Sydney-based specialist in vertical carousels and Vertical Lift Modules (VLMs). VCA provides sales, refurbishment, repairs, preventative maintenance, relocation, upgrades, and software integration across Australia and New Zealand. It has more than 30 years of industry experience and 500+ installations.
An assessment can help you understand the condition of your existing vertical carousel. It can also help you work out what makes the most sense for your operation: refurbishment, a targeted upgrade, or replacement. VCA has spent more than 30 years supplying, servicing, and refurbishing automated storage systems. Preventative maintenance, 24/7 technical support, and safety upgrades are handled in-house for most major carousel and VLM brands.
For Sydney businesses running an older carousel, getting it properly checked is the first step. It is the best way to know whether an upgrade, a full refurbishment, or a replacement is the right call. That beats guessing.
Talk to VCA about your existing vertical carousel or call the Sydney office on 0477 577 050.
