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Manufacturing

Selling machinery: the documentation that goes with it

What you hand over with the machine stays with you for its whole working life.

Updated on 13/08/2026

When you hand over a machine you also hand over a documentary package that outlives the sale: the customer will need it at every inspection, every change of operator and every resale. And when they cannot find it, they will call you — five, eight or twelve years later.

What goes with the machine

DocumentWhat the customer uses it forWhen they will ask you
Declaration of conformityJustifying they may use itAt their first inspection
Instruction manualTraining whoever operates itEvery time the operator changes
Maintenance documentationComplying with inspectionsEvery year
Critical component certificatesFacing an incidentAt the worst moment

Important

Handing it over with a signed receipt is what prevents the problem five years out. Without one, the conversation is "I never received that" and there is no way to close it — with one you resend and it is over.

What is worth keeping on your side

The first row is the most neglected. If the manual changes between units and there is no record of which one each carried, answering an aftersales query becomes guesswork.

Watch out

If you modify a machine already delivered, the earlier documentation may have stopped describing what is installed. That is where a resale or an incident exposes a discrepancy nobody knew existed.

Worth knowing

Handing over documentation digitally with a signed receipt also solves the resale case: the second buyer asks for it, and you can say exactly what was delivered and to whom.

Can I deliver it digitally only?

It depends what your product's regulation requires; check.

What if the customer loses the manual?

With the delivery record you know which version they had and resend it.

How long do I keep this documentation?

Machine working lives tend to be long; confirm with your adviser.

A real case

The situation

A manufacturer gets a query about a machine sold nine years ago and does not know which manual it carried.

What you do

  1. Links manual and certificates to the serial number on each delivery
  2. Hands over with a signed receipt

What you get

Aftersales queries are answered in minutes, even for resold machines.

The situation

The machine is delivered and the documentation follows later.

What you do

  1. Delivers the file with the machine

What you get

The customer receives what covers it.

The situation

The customer asks for the manual years later.

What you do

  1. Keeps the file by serial number

What you get

It is provided without reconstructing.

The situation

Each machine carries a different configuration.

What you do

  1. Stores which configuration went out on each

What you get

You answer per unit.

The situation

A component is replaced and the documentation stays the same.

What you do

  1. Updates the file with every change

What you get

The paper describes what was delivered.

The situation

A customer complains and nobody knows which version they had.

What you do

  1. Checks that unit's file

What you get

The complaint is resolved with data.

This article answers

  • documentation delivered with a machine
  • manual and declaration of conformity handover
  • what papers accompany industrial equipment
  • machinery aftersales documentation