Buying a wood pellet machine is only the beginning of the production project. Before the supplier leaves the site, the buyer should capture a clear startup baseline that shows what stable operation looked like under known conditions. Without that record, future changes in raw material, die condition, feeder behavior, utilities, or cooling can be difficult to diagnose and may lead to unnecessary machine adjustments.
For a buyer commissioning a wood pellet machine, the most valuable handover data links throughput with feedstock condition, motor load, product quality, and downstream performance. This creates a reference that the plant can use long after installation is complete and helps separate equipment problems from ordinary process variation.
Record the Exact Test Feedstock
Document the wood species or mixture, moisture range, particle-size condition, bulk density if available, and visible contamination used during acceptance. A performance number without this information is difficult to reproduce. The same pelletizer may behave differently on clean dry sawdust than on mixed residues containing bark, shavings, or denser hardwood material.
If the normal plant feedstock is more variable than the test material, the buyer should also record how the machine responds to representative variation before final handover. The objective is to understand the usable operating range, not only the easiest possible test condition.
Capture Utility Conditions
Record voltage stability, major motor loading, compressed air where relevant, and the operating status of dust collection and other supporting systems. If utilities are unstable during the test, the resulting pelletizer data may not represent the machine itself. A weak electrical supply can create current or startup problems that look like a process issue.
These utility notes also help maintenance teams separate electrical, extraction, or auxiliary-equipment problems from pelletizing problems later. The baseline should reflect the normal configuration the plant intends to use in production.
Record the Feeder Operating Point
The baseline should include the feeder setting and whether material flow was steady. If the feeder required frequent manual correction, the plant should resolve the flow problem before treating the result as normal production. A numerical setting means little if the actual material flow is surging because of bridging or inconsistent bulk density.
A repeatable feed rate is essential for meaningful motor-load and throughput comparisons. The buyer should therefore note any bin, chute, or feeder behavior that could affect the stability of the recorded test.
Use a Motor-Current Range Instead of a Single Number
Record the normal current band during stable output. One short peak does not show the real operating condition. The useful reference is the range the machine holds while production and pellet quality remain steady for a sustained period.
Later, a sustained increase can indicate changing feedstock, die resistance, feeding problems, contamination, or another process constraint. A baseline current range gives the production team an objective comparison point instead of relying only on operator memory.
Describe Die and Roller Condition
The buyer should note whether the die is new, newly conditioned, or already in service and whether roller adjustment was stable during acceptance. This gives context to the recorded capacity and current. A new die may change as it runs in, while a worn die later in its life may require different loading.
Future production should not be compared blindly with startup data if the wear condition has changed substantially. The baseline should make the original mechanical condition clear enough that maintenance staff can judge whether a later difference is expected.
Record Net Finished Output
Measure useful finished pellets, not only gross feed through the machine. Fines, screening loss, breakage, and recycle can make a high gross rate look better than the actual commercial result. The buyer should understand how much finished product leaves the line in acceptable condition at the claimed operating point.
The accepted baseline should reflect the output the plant can cool, screen, convey, and handle successfully. If the pelletizer can briefly run faster than downstream equipment can support, that short-term figure should not become the production target.
Capture Pellet Quality at the Same Rate
Record pellet appearance, breakage, fines trend, and any durability indicator used by the plant. The highest throughput is not the correct acceptance point if product quality deteriorates sharply. Quality observations should be made after the pellets have passed through the normal downstream handling steps, not only at the die discharge.
This helps the buyer define a practical operating window rather than a one-time maximum. It also creates a reference for deciding whether later quality changes come from feedstock, die wear, cooling, or handling.
Document Cooler Performance
The baseline should include cooler discharge temperature, product depth, airflow observations, and whether the cooler remains stable during an extended run. Cooling is part of plant capacity because hot or insufficiently cooled pellets may break, deform, or create storage problems.
If the cooler becomes the first bottleneck, the line’s usable capacity should be based on that limit rather than the pelletizer alone. The buyer should also note whether ambient conditions during the test were typical or unusually favorable.
Track Fines and Recycle
Record the amount of screened fines and the normal recycle flow at the accepted operating point. A rise in recycle may show that the line is being pushed beyond the condition where net output is most efficient. It can also reveal product damage in cooling or conveying.
This information is particularly valuable when the buyer later evaluates whether a capacity loss is real. Gross feed may stay similar while saleable output falls because more material is circulating back through the system.
Record Wear Parts and Spare Status
Before handover, confirm the die, rollers, key seals, bearings where relevant, lubricants, and agreed spare parts. The buyer should know which parts are expected to wear first, what inventory is already on site, and which items have longer lead times.
This reduces the risk that a small consumable stops production soon after startup. The handover should also identify basic inspection intervals so operators know what needs routine attention before a fault develops.
Confirm Operator Competency
Normal plant operators should demonstrate startup, load increase, alarm response, shutdown, and restart before the commissioning team leaves. Training is not complete if only the supplier can reproduce stable production. The buyer should observe whether operators understand why they are changing a setting, not only which button to press.
The handover record should identify who was trained and which procedures still require support. It should also distinguish normal operator adjustments from conditions that require maintenance or engineering involvement.
Test a Realistic Restart
A planned stop and restart can reveal issues that continuous operation hides. The team should confirm how material is cleared, what must be inspected, which equipment starts first, and how the line returns to the accepted operating point without creating an overload or blockage.
This is especially important for plants that expect frequent shift changes, power interruptions, product changes, or scheduled cleaning. A clear restart sequence reduces uncertainty during the first months of operation.
Record the Conditions That Change the Recommendation
The buyer should understand which changes require a different operating approach. Examples include a significantly wetter feedstock, a major shift in wood species, a different particle-size distribution, a new die specification, or a downstream capacity restriction. The startup baseline is a reference, not a rule that must be followed when the process conditions are no longer comparable.
Writing these change conditions into the handover notes helps future operators know when to use the original baseline and when to establish a new one under controlled conditions.
Record Startup Time and Stabilization Losses
The buyer should record how long the line normally takes to move from startup to stable saleable output. Early production may be recycled while feeder flow, die temperature, cooler conditions, and downstream handling settle. If this material is not counted separately, the hourly acceptance figure can make daily production look more predictable than it really is.
This is particularly important for plants that expect frequent stops, short production campaigns, or multiple material changes. A line that performs well after a long continuous run may deliver a different daily result when it must restart several times. The startup baseline should therefore capture both steady-state performance and the normal transition time needed to reach it.
Confirm the Baseline Is Repeatable on a Second Run
Where schedule permits, the buyer should repeat the accepted operating condition after a controlled stop or on a later shift. Reproducing the result is stronger evidence than one successful run because it shows that the settings, feedstock preparation, and operator method can be applied again without unusual intervention.
If the second run requires materially different settings, the team should understand why before final handover. The difference may be legitimate, such as changed moisture or die condition, but it should be documented rather than left as an unexplained variation.
Keep the Baseline as a Troubleshooting Reference
The final startup sheet should combine feedstock, utilities, feeder setting, current, throughput, pellet quality, cooler condition, fines, die status, spare-part status, and important operator notes. Store it where supervisors and maintenance staff can access it rather than leaving it only in the commissioning engineer’s files.
When performance changes, the plant can compare present conditions against this baseline and identify what changed first. That structured comparison usually leads to faster troubleshooting than changing multiple machine settings at once.
A Good Handover Preserves the Successful Operating Window
The strongest startup result is not a photograph of the first pellets or a single capacity number. It is a documented, repeatable operating condition that the buyer’s own team can reproduce under realistic plant conditions.
Capturing that baseline before handover protects the value of the machine, shortens future troubleshooting, improves communication between production and maintenance, and gives the plant a practical reference for stable commercial production.
