Buying Used Process Equipment: A Practical Checklist

Going beyond the checklist: buying used process equipment with confidence

The checklist above covers what to look for on a machine. This section looks at the buying process itself: how to describe what you need, how to inspect a machine properly, what to budget for after purchase and how to bring used process equipment into a modern, safe production line. Done well, a second-hand mixer, mill, feeder or filler can give years of dependable service at a fraction of the cost of new.

The key is to treat a used purchase like a small project rather than a simple transaction. A clear scope, a careful inspection and a realistic plan for refurbishment and installation will protect you from most of the surprises that give second-hand machinery a bad name.

Start with a clear process brief

Before you look at any listings, write down what the machine must actually do. A short process brief makes it far easier to judge whether a piece of used process equipment is a genuine fit or simply a bargain that will cause problems later.

• Product: the powders or granules to be handled, their bulk density, flow behaviour, moisture and any abrasive, sticky or combustible characteristics.
• Duty: batch size or hourly rate, number of shifts and how often products change over.
• Hygiene: whether the machine needs food-grade or pharmaceutical-style finishes, allergen control or wash-down capability.
• Site: available height and floor space, access for rigging, power supply and compressed air.
• Upstream and downstream: how material will be fed in and where it goes next.

With this brief in hand, a supplier can tell you quickly whether a machine in stock suits your application, needs modification, or should be passed over in favour of a different unit or a new build.

7 essential checks when you inspect used process equipment

Seeing used process equipment in person, or by detailed video if distance makes that impractical, is the single best way to reduce risk. These seven checks complement the earlier list and focus on what you can confirm on inspection day.

1. Run it under power. Ask for the machine to be run empty. Listen for knocking, grinding or uneven noise from the gearbox and bearings, and check for vibration.
2. Look inside. Open lids and inspection doors. Check agitators, rotors, screws or blades for wear, cracks, bent sections and repairs that may affect performance or cleanability.
3. Check clearances. On mixers and feeders, wide gaps between the agitator and the shell can leave product behind or reduce mixing performance.
4. Inspect the finish. Look for pitting, corrosion, rough welds and crevices on product contact surfaces, which can trap material and complicate cleaning.
5. Confirm the nameplate. Record the make, model, serial number, voltage and motor rating so spares and documentation can be traced.
6. Review the controls. Note the age of the control panel, whether it has emergency stops and interlocks, and whether drawings or manuals exist.
7. Ask about the last product. Understand what the machine processed and how it was cleaned, particularly if you handle food, allergens or sensitive chemicals.

Take photos and measurements of the used process equipment during the visit. They will help with layout planning and with pricing any refurbishment work before you commit.

Budgeting for the true cost of used process equipment

The purchase price is only part of the picture. A sensible budget for used process equipment includes the work needed to make the machine safe, compliant and productive in your plant. Planning for these items up front means the project still compares well with buying new.

• Refurbishment: new seals, bearings, gaskets, wear parts and possibly a repaint or re-polish of contact surfaces.
• Electrical upgrades: replacing or modifying older control panels so they meet current Australian electrical and machinery safety requirements.
• Guarding: adding or upgrading fixed guards, interlocked lids and safety grids to suit modern expectations.
• Transport and rigging: moving heavy machinery safely to site and positioning it.
• Integration: platforms, chutes, conveying, dust extraction and the connections that link the machine into your process.
• Commissioning and training: testing with product and showing operators how to run, clean and maintain the machine.

Ask the supplier of your used process equipment to separate these costs in their proposal. It makes it easy to compare a used option with a new machine and to decide which upgrades are essential now and which can wait.

Safety and compliance when installing used process equipment

Older used process equipment was often built to the standards of its time. When second-hand machinery is installed in an Australian workplace, the business using it is responsible for managing the risks it presents. That usually means a risk assessment covering moving parts, electrical safety, noise, dust and how operators load and unload the machine.

Manual handling deserves particular attention. Much older used process equipment, especially mixers and fillers, was designed around operators lifting and tipping bags by hand. Adding a bag tip station, bag lifter or bulk bag unloader can remove much of that strain. Safe Work Australia’s model code of practice for hazardous manual tasks is a useful reference when planning these changes.

Where the product is a combustible dust, such as flour, sugar, starch or many plastics, also review dust control and explosion risk. Earthing, dust extraction and suitable electrical equipment may be needed before the machine is put to work.

Getting the most from refurbished machinery

Used process equipment performs best when it is integrated properly. A well-maintained ribbon blender, for example, will still give poor results if it is overfilled, fed unevenly or discharged into an open bin that creates dust. Looking at the whole line, not just the machine, makes the difference between a quick fix and a lasting improvement.

Common improvements made at installation include a new discharge valve, a surge hopper and auger filler beneath a mixer, a sifter to check product before packing, or pneumatic conveying to remove manual transfers. Our ribbon blender buying guide and blending room planning guide explain how these pieces fit together.

Keeping it running

Once used process equipment is installed, a simple preventive maintenance plan protects your investment. Record the seal and bearing types, keep critical spares on the shelf, check gearbox oil and guards regularly, and note any change in noise or vibration. Small issues caught early are far cheaper than unplanned downtime.

When new is the better choice

Used process equipment is not always the right answer. If your process needs a specific size, finish or feature that no available machine offers, if modifications would cost close to the price of new, or if spares for the model are no longer available, a new build may be better value over its life. A good supplier will tell you honestly when that is the case.

Klausen Process Machinery designs and manufactures new equipment at Kings Park in Sydney as well as supplying second-hand machinery, so we can compare both options for your application. Browse our current used machinery or our full range of new products to see what is available.

More questions about used process equipment

Can used process equipment be modified to suit my plant?

Often, yes. Discharge valves, inlets, guarding, motors and controls can usually be changed. KPM can review a machine and advise which modifications are practical before you buy.

Is second-hand equipment suitable for food production?

It can be, provided the contact materials and finish are suitable and the machine is thoroughly cleaned and inspected. Knowing the previous product and cleaning history is essential.

What should I ask a seller of used process equipment?

Ask about the machine’s history, last product, reason for sale, any known faults, available manuals and whether it can be inspected or run before purchase.

Can KPM integrate a used machine with new equipment?

Yes. We regularly combine refurbished machines with new feeders, conveying, platforms and controls to create a complete working line.

Equipment to pair with used process equipment

Powder mixersBag tip stationsAuger fillersSifters and sieves