Selling a machine with an older CNC control

Record the machine model and serial number, the control designation and any documented retrofit. Photograph safely accessible identification, without opening cabinets or entering service settings.

Keep machine age and control age separate where a retrofit is documented. Likewise, distinguish a replacement display from a replacement control system. An invoice may identify which item was changed; it should not be expanded into a claim that the machine was fully modernised.

Haas's serial-number and machine search is an example of a manufacturer route for identifying machine information. Its manual library also separates current and earlier documentation. Use the equivalent route for the actual manufacturer and build.

The following wording can be adapted for the manufacturer or service provider. Remove anything you do not know rather than guessing.

We are preparing machine [make, model, serial number] for sale. Its fitted control is [designation], with [documented retrofit or known changes]. Please confirm which support information you can provide for this configuration.

We would like to establish the available manuals, current service options, relevant parts support, supported program-transfer arrangements and any known restrictions affecting the fitted options.

Please distinguish confirmed information for this machine from general information about the model family. If an inspection or paid assessment is required, please state the proposed scope.

We also need to know whom to contact about software or option-transfer rights. We are not assuming those rights transfer with the hardware.

Attach concise photographs and relevant records. Keep passwords, customer programs and other sensitive material out of a general enquiry unless the recipient has specifically requested them through an agreed process.

A service provider saying it repairs a control family does not guarantee availability of every component. Ask whether any answer is conditional on inspection, part identification or supplier stock.

Record the date of the reply. Parts and support availability can change, so avoid indefinite statements such as “spares always available”. A dated supplier response is more precise.

Separate these issues:

• Documentation: which manuals and diagrams are available for this configuration.
• Service: the type and geographic scope of support offered.
• Parts: specific confirmed information, including qualifications.
• Interfaces: what the manufacturer documents for program transfer or peripheral connection.
• Options: fitted and enabled functions, with supporting evidence.
• Rights: the separate permission or licence questions.

This distinction prevents a promising answer about manuals from being presented as a guarantee about future repairs.

Retain known fault reports and unfinished recommendations. A supplier's willingness to inspect the machine does not establish that the machine currently works.

Use the service-history log to record the evidence gaps. The CNC hours guide explains why control readings also need their exact definitions and history.

For files, accounts and licences, follow the digital handover guide. Do not promise that a working screen transfers the right to every associated program or software function.

If the workshop has already lost power, explain that before requesting a current functional assessment. The guide to machines without a demonstration shows how to present the available evidence and the limits of what can be checked.

A clear record may show that support is available, limited, conditional or still unconfirmed. Any of those outcomes is more useful than a guessed “obsolete” label.

Send the identification, dated support replies and unresolved questions to UK Auction Group for a valuation discussion. The engineering and CNC hub covers the rest of the preparation process.