A maintenance certificate is the written record of one service visit: which unit was attended, the condition it was found in, the settings found and left, the work done and parts fitted, and what the next visit should check. It records observations as found — it does not invent pass marks, and it is not the installation test certificate, which belongs to the day a new installation was signed off.
Key Takeaways
- A maintenance certificate records one visit: identity, condition as found, settings found and left, parts fitted, functional result, next-visit note.
- It is distinct from the task checklist and from the installation test certificate (measurements at commissioning).
- Measurements appear only where the manufacturer’s service guidance calls for them — value and instrument recorded, limits from the guidance or the code.
- Filed by serial and copied to the customer, the records become the renewal evidence.
The Record, Field by Field
| Field group | What the visit records | Why it earns its place |
|---|---|---|
| Unit identity | Site, unit model and nameplate serial, the connector or port attended, visit date, attending technician and company | Ties the entry to one physical unit across years of visits |
| Condition as found | Cable, connector, enclosure, screen and mounting recorded as observations in words: wear, damage, obstruction, signs of overheating or water entry | The baseline the next visit compares against; every fault history starts as a condition note |
| Settings as found and as left | Output and access settings as found on arrival; any change made, and the state left behind — access credentials issued, an output setting adjusted | Settings drift found early is a callback avoided, and the entry shows who changed what, and when |
| Work done and parts fitted | Tasks completed on this visit; parts fitted by name, and by serial where the part carries one; parts advised but not fitted, recorded as recommendations | Separates done from advised — the line a later warranty or billing conversation depends on |
| Functional result | A charge session completed on the attended connector or connectors, or the unit left out of service with the reason stated | Proof of the unit’s state at the end of the visit, not a verbal assurance |
| Next-visit note | Items to re-check, wear to watch, and the recommended interval from the manufacturer’s service guidance for that model | Turns single visits into a maintenance history instead of a pile of unrelated forms |
Not the Task List, Not the Test Certificate
Three documents get confused because they share a clipboard. The maintenance checklist — our published commercial EV charger maintenance checklist — says what work a visit should include. The maintenance certificate records what was found and done on this unit, on this day. The installation test certificate is a different instrument: it belongs to a new installation and records measured values judged against the wiring code and the manufacturer’s instructions. A service visit follows the manufacturer’s service guidance for the model; where that guidance calls for a measurement, the certificate records the value and the instrument, and the limit comes from the same guidance or the code — never a number invented on the spot. That discipline gives the record its weight later.
Who Reads the Record Later
The site owner reads it at renewal time: a file of dated entries is the evidence that a maintenance contract delivered what it charged for. The manufacturer reads it inside a warranty conversation, where unit identity and a clean service history separate a defect claim from a wear argument — EVDANCE’s standard warranty runs 3 years, and its written terms govern what it answers. The installer reads it most of all: the settings-found column and the next-visit notes are their own memory. Networked units add a cross-check — a station such as the EV-AC03201T dual-connector AC station reports faults remotely over OCPP 1.6J, and the certificate is where those reports meet eyes on site. Teams standardising paperwork across a contracted base can reach us via contact us; the qualifications behind the signature belong to our guide on installer qualifications.
Frequently Asked Questions
Is a maintenance certificate a legally prescribed document?
There is no single universal form. What records a site must keep can be set by its maintenance contract, its funding conditions or its jurisdiction — confirm which apply. The field set here is professional practice: complete enough to serve the owner, the manufacturer and the next technician.
Should the record include test measurements?
Only where the manufacturer’s service guidance for that model calls for one. Then record the measured value and the instrument. Thresholds copied from another document — or invented — do not improve it.
Who keeps the maintenance certificates?
Both parties. The customer receives a copy for each visit; the installer files theirs by unit serial, so any charger’s history can be produced in one search — that retrievability is what makes the file worth money at renewal.
Related Reading
- Commercial EV Charger Maintenance Checklist
- What Qualifications Do You Need to Install EV Chargers?
- EV Charger Warranty and After-Sales Terms: A Distributor’s Checklist
- What Is a Standard EV Charger Installation?
