What Should a Pre-Purchase Inspection of a DEKA ONDA Plus Include?

A pre-purchase inspection of a DEKA ONDA Plus should be organised as a pairing audit. The ONDA Plus is a generator-based system whose applicators do the work the clinic buys, and the generator and each applicator are separate serviceable units. The central question of the inspection is therefore not “is the machine clean” but “which generator serial pairs with which applicator serials, and does every pair carry its own records?”

This pairing audit suits clinic owners, biomedical engineers and procurement managers checking a used ONDA Plus before funds move. It treats the generator, the applicators, the cables and the connectors as four check layers, and it records each layer against the serials the offer names.

The buyer-observable boundary is fixed before the first check: generator exterior, applicator bodies, cables, connectors and accessories can be inspected; panels, covers, electrical points and internal adjustments cannot. Every check below sits on the buyer side of that boundary.

Scope buyer-controlled checks without opening the generator

Write the check scope before the visit: which generator, which applicators and which cables the offer names, and what the buyer will verify for each. A scoped list stops the session from expanding into work that only a qualified party may perform.

Record the configuration as offered at the same time: the generator model, the applicators with their serials, the cables and connectors that travel with the unit and the accessories included. The configuration entry anchors the pairing audit, because a generator without a named applicator set cannot be priced or inspected.

Observe the unit only through the seller’s documented demonstration. The buyer may watch the generator run with the applicator the seller connects and record what is visible; operating beyond that setup produces a claim, not a finding.

Ask which applicator the seller will connect for the demonstration and whether it is the applicator the clinic intends to use. A demonstration on one applicator proves little about another, so the audit records which applicator actually ran.

Verify applicator, cable and connector identification

Each identification line begins with a serial: the generator first, then every applicator, cable and connector that carries an identifier. The audit refuses to guess a serial from the listing, and an applicator named in the offer but absent from the hardware stops the audit from closing.

The audit cross-checks the pairing list against the invoice and the official configuration: the generator serial and each applicator serial must appear in the same documents that define the offer. A serial in the records that is not on the hardware is a pairing break, and the buyer records it instead of resolving it in the seller’s favour.

Take a dated photo of the generator label and of every applicator label. Where a label is missing or damaged, the audit marks the pair as identification-incomplete rather than guessing the serial, because a guessed serial cannot be matched to records.

In the pairing audit, the serial column and the condition column never share evidence. A serial proves the component is present; a dated finding proves what it looks like, and the two columns are closed by different documents.

Separate observable applicator state from output claims

Record the applicator state as a finding: clean, worn, damaged or marked, with the location and photos. The manufacturer documentation defines the care and handling expectations, and the audit notes where the visible state of each applicator differs from that expectation.

Check the cable and connector ends that join the generator to each applicator: no wear, moisture, kinks or damage at the visible connection points. A damaged connection point is a finding even when the applicator body looks clean, because the pair cannot be trusted if the link between the two halves is compromised.

The buyer should also note whether any applicator shows signs of impact, such as dents or cracks at the housing seams. Visible impact damage is a finding even when the unit still runs during the demonstration, and the audit records it on the applicator row.

The audit draws one line through every row: applicator and connection state is observed here, and output and delivery behaviour are not assessed here. Rows above the line are buyer findings; rows below it are qualified work, and the line is written into the file rather than assumed.

The audit never opens or adjusts the generator or applicator internals. Such work belongs to a qualified party, and attempting it during the inspection would change the meaning of every record the audit collects.

Request dated functional-test and calibration records

For each generator-applicator pair, request a functional-test record naming the pair: the generator serial and software state, the applicator serial tested, the method, the date, the performer and the result. A test that names only the generator, or only an applicator, leaves the pair unverified.

Calibration records are requested separately for the generator: what was calibrated, the method, the date and the result. The delivery state of a generator without calibration records is unverified, and the audit keeps the row open until the record arrives.

Ask whether the records state the software or protocol version under which the generator was tested. Applicator behaviour depends on the generator software state, and a test that names no version cannot be repeated or compared later when the buyer checks the same pair.

The audit asks for a written pairing statement: which generator serial and which applicator serials the records describe. Without that statement the records cannot be placed on rows, and a record that cannot be placed cannot close a pair.

Where the seller offers a spare applicator outside the quoted set, the audit logs it separately. A spare is not part of a pair until it is identified and recorded, because a loose applicator without a serial cannot be priced or traced.

Set acceptance criteria, hold points and unresolved defects

Write the acceptance rule before the inspection ends: the audit is accepted only when every quoted pair is present, identified and matched to unit-specific records. A generator with a clean history and an applicator without records is an accepted-with-conditions outcome at best, because the pair is only half proven.

Holds are declared on the audit when a pairing cannot be completed: an applicator absent from the unit, a serial mismatch, a record overdue, or damage at a connection point. Each hold names the evidence that would clear it, so the seller knows exactly what to supply.

Every pairing row ends as pass, hold or escalate. A missing record is a hold, not a pass; a question outside the buyer boundary is an escalate, not an assumption; and nothing ends as “probably acceptable” without evidence.

Escalate to qualified service with preserved evidence

Rows escalate when they cross the buyer boundary, when a pair cannot be matched to records or when a visible finding could affect safe delivery. The escalation preserves the evidence and returns a written finding that names the generator and applicator it concerns.

The audit row closes when the qualified finding arrives and is attached to the pair it names. The unit is accepted or rejected on the completed audit, and no seller assurance can replace a finding that names the generator and applicator.

At delivery the buyer repeats the pairing check: the generator and applicator serials that arrive must match the pre-purchase audit, and any difference is resolved in writing before the unit is accepted into service.

Keep one audit per generator serial when the clinic inspects several units in one session, and reconcile each audit against the seller’s packing list. A delivery-level summary cannot replace the per-unit audit, because acceptance belongs to one serial at a time.

Close the purchase by requesting the inspection record and dated functional evidence for the exact DEKA ONDA Plus unit. The platform context is in the ONDA Plus comparison guide, and the ONDA Pro launch guide covers the sibling platform; DEKA ONDA systems is the product reference.

Frequently Asked Questions

Why does the audit hold when an applicator serial is missing?

Because the applicator set carries the ONDA Plus working value, and a serial is the only way to attach a record to a specific applicator. Without it the row cannot be paired, so it holds until the serial appears and the hold is recorded with its deadline.

Can the audit close without calibration records for the generator?

No. Calibration is a documented technical fact that defines the delivery state, and without the records the generator row stays unverified. The audit records the gap, and the price discussion carries the uncertainty.

References

• DEKA official website (manufacturer resource)