When you audit a fan factory, the tidy production floor tells you very little. The records tell you almost everything worth knowing.
A tidy plant with no calibration log is a worse bet than a messy one with full traceability.
Focus on five record sets: incoming material inspection, process control data, balancing and test results, calibration certificates and corrective action files. Ask to see a specific batch traced end to end. Remote audits work well when the supplier shares documents in advance and gives a live, unscripted video walk.
Records that reveal real capability
- Incoming inspection records, which show whether material is actually checked.
- Balancing data, since correction weight trends expose upstream variation.
- Electrical test logs, ideally per unit rather than per batch.
- Calibration certificates for every measuring instrument in use.
- Corrective action files, which show whether problems get closed out.
- Finally, change control records for design and component changes.
That last one matters more than buyers realise. A quiet component swap can void a certificate, and nobody spots it until an inspector does.
The single most useful request
Whenever you audit a fan factory, ask to trace one specific batch from raw material to shipping document.
A good factory finds that trail in minutes. A weak one starts explaining where the records live. Meanwhile the exercise shows you exactly which processes get controlled and which get assumed.
Choose a batch at random from a shipping record rather than accepting a prepared example. The difference in what you learn is considerable.
What to look at when you audit a fan factory
| Area | What to check |
|---|---|
| Incoming goods | Segregation of unchecked material |
| Pressing and forming | First article checks and gauges in use |
| Welding | Fixtures, and whether operators use them |
| Winding | Slot fill consistency and impregnation process |
| Balancing | Records, grade used, and scrap policy |
| Test area | Whether every unit is tested or a sample |
| Packing | Whether packaging matches the specification |
Ask what happens to a wheel that fails balance twice. Scrapping it points to a real process. Adding weight until the machine falls quiet does not. That single question tells you a lot when you audit a fan factory.
Running a remote audit properly
- Send a document request two weeks ahead, listing exactly what you want.
- Review those documents before the call rather than during it.
- Ask for a live video walk rather than a pre-recorded tour.
- Point the camera where you choose, not where they choose.
- Put technical questions that need real design knowledge.
- Finally, request photographs of specific gauges and certificates.
A remote audit works far better than people expect, provided the paperwork review comes first. Our sourcing guide covers the wider process.
Test capability is the clearest signal
Nothing sorts a maker from a trader faster than asking to see the test chamber.
A plant with an airflow chamber answers duty point questions on the spot, sends curves on request, and looks into a complaint properly. Meanwhile a supplier without one is simply forwarding your question.
We test to AMCA 210/211 methods and provide reports on request. Our test method guide explains what a chamber test actually measures.
Turning findings into action
An audit that ends in a report and nothing else has wasted everybody time.
Agree a few specific actions with dates, then check them at the next order rather than at the next visit. Meanwhile write the important controls into the purchase order, since that is what the shop floor actually reads.
For the underlying framework, ISO 9001 describes what a quality management system should contain.
One closing note. Audits work best as a habit rather than an event. A short annual check with the same questions builds a picture of whether a supplier is improving or drifting, and that trend matters more than any single visit.
Factory audit FAQ
Can a remote audit replace a visit?
For a first screening, largely yes. For a major programme, a visit still finds things a camera does not, particularly around material handling and housekeeping discipline.
What is the biggest warning sign?
Missing calibration certificates, followed by an inability to trace one batch. Both indicate that the quality system exists on paper rather than in practice.
Should I use a third-party auditor?
For a first major supplier, it is money well spent. They know what to look for and their presence changes how seriously the visit is taken.
How often should I audit?
Annually for major suppliers, and after any significant change of process, ownership or location. Between audits, inspection records do the monitoring.
Audit a fan factory through its records rather than its floors. Trace one batch end to end, and you will learn more in an hour than any tour delivers in a day.
