01
1. Define the feed
Whole fruit or peeled flesh, fresh or frozen, piece size and temperature. A pulper that works for fresh flesh may not accept frozen or partially thawed material without a feed change. State the credible range, not one ideal sample.
02
2. Define the texture target
Provide a reference sample and a measurement method. “Smooth” is not enough. State whether the target is a particle size, a fibre allowance, a viscosity or a sensory property in the final application.
03
3. Compare the machine duty
Ask for the rotor, screen or strainer, open area, drive and discharge arrangement. A larger motor does not automatically mean better texture. The machine should be able to explain how the product passes the working zone and how coarse material leaves.
04
4. Check the capacity basis
State whether the capacity is pulp output, flesh input or finished puree. Ask for the measurement point and the tested product condition. Compare the whole line, including feed and refining, not just the pulper nameplate.
05
5. Check air, heat and cleaning
Inspect the feed inlet, chamber access, screen removal, seals and discharge. Ask how the machine limits air entrainment and temperature rise. A pulper that is hard to clean will not stay consistent.
06
6. Demand a sample trial
Run the actual material and measure output, retained material, temperature and texture. Repeat at the difficult end of the range. A video or a photograph is not a performance trial.
| Selection question | What to ask the supplier | Red flag |
|---|---|---|
| Feed range | What presentations and temperatures have been tested? | Only one ideal sample |
| Texture | Which screen/rotor and measurement method? | “Smooth” without a method |
| Capacity | At which point and product condition? | A single tonnage |
| Air/heat | How is exposure or temperature rise assessed? | No trial data |
| Cleaning | How are chamber, screen and seals accessed? | No practical access |
| Wear parts | Which parts wear and how are they replaced? | No maintenance plan |
Before you enquire
Practical questions
What size pulper do I need?
Size it from the measured feed and the required pulp output at the tested product condition. A larger machine is not automatically better if the feed or refiner is the bottleneck.
Can a pulper handle whole bananas?
A banana pulper is normally fed peeled flesh. Whole fruit needs washing, peeling and inspection first; a whole-fruit pulper would be a different duty and must be specified accordingly.
How many screens should I order?
Enough to cover the trial and the expected product range. The exact set depends on the offered model and the texture targets you need to evaluate.
These notes are a project-preparation framework, not a validated operating procedure or a performance guarantee.
Next step
Put the product in the brief.
Share the actual feed, texture target and measurement point. The equipment discussion becomes much more useful.