Waterjet machines: documenting pump and abrasive-system history
- Reading time
- 3 minutes
- Last reviewed
On this page
For a used abrasive waterjet, organise service evidence by component. The pump, cutting head, table and abrasive equipment may have different histories. A single folder labelled "waterjet serviced" can hide which work actually took place.
OMAX's waterjet guidance identifies the pump and cutting head as major maintenance areas. It also explains that maintenance depends on the equipment, use and water quality. Those distinctions are useful when preparing records, but they do not provide a universal service interval or remaining-life estimate.
Start with the pump identity
Record the pump manufacturer, model and serial number separately from the table. If the pump has been replaced, preserve both the replacement record and the date it entered service. Do not assume the table's year is the pump's year.
Request invoices and reports that name the component worked on. Ask the service provider to clarify vague descriptions where practical. "Pump work" could refer to a limited repair or a wider overhaul; the sale description should follow the evidence.
Counter readings need the same care. Photograph the display and label what it measures according to the matching documentation. A recorded hour figure without its counter type and replacement history is incomplete.
Ask for records in this order
| Component | Records to request | Question to resolve |
|---|---|---|
| High-pressure pump | Identity, dated service reports, replacement records and outstanding recommendations | What work was completed on this pump? |
| Cutting head | Model, consumable and service history, known changes | Which head is fitted and what evidence supports its condition? |
| Abrasive delivery equipment | Component identities, maintenance records and included accessories | What belongs to the offered system? |
| Water treatment or cooling | Equipment list and maintenance documents | Is it dedicated, shared or retained? |
| Table and controls | Service history, software details and documented upgrades | Does the description match the installed machine? |
| Tank or solids-removal equipment | Prior-use information and agreed contractor scope | Who handles remaining contents before transport? |
Keep the request focused. A service provider can respond more usefully to a serial number and dated invoice than to "please confirm the waterjet is good".
Where records cannot be found, the missing machine service-history guide explains how to distinguish unavailable documentation from a known fault. Both need disclosure, but they are different statements.
Decide what evidence is worth obtaining
A buyer may want a specialist assessment when pump history is incomplete. Before commissioning work, ask what decision the assessment is intended to support, what access it needs and whether it can happen within the sale timetable.
A clearly scoped assessment can answer an identified uncertainty. An open-ended attempt to make the machine look fully documented may add cost without resolving the buyer's main concern.
Do not arrange pressure testing or component disassembly as a catalogue exercise. The manufacturer or competent service specialist should define any technical assessment. The seller can provide existing records, authorised access and a clear list of questions.
When comparing sale preparation across cutting equipment, a plasma table inventory focuses on a different component package. Keep the waterjet's pump and abrasive history visible rather than copying the plasma description.
Resolve the remaining contents
The abrasive, water and particles from previous work need a planned handover. OMAX's guidance notes that abrasive can pick up material from the work being cut. Record the prior materials and any existing waste or cleaning documentation for the contractor.
That evidence does not determine a UK waste classification by itself. Obtain the relevant specialist advice and agree responsibilities before stating that the machine will be empty or ready for transport. The previous-contents declaration guide provides a record for the information and gaps.
Also establish the installation boundary. Where foundations or anchoring need assessment, use the questions in the machine foundation and anchoring guide. A competent contractor should set the removal method.
For a sale discussion, give UK Auction Group's manufacturing asset service the component list, service evidence and unresolved questions together. Include the available dates for inspection and release. The fabrication and welding hub covers associated workshop equipment.
Sources
- OMAX waterjet FAQs Checked
This guide gives general information. Equipment-specific, legal, tax and safety decisions may need a qualified adviser or competent specialist. The guides do not promise sale prices, fees or results.