Tracing spares and warranty service for installed equipment

Early on, the service head knows every installation. A call comes in and the answer comes from recall: which dealer, which season, which batch; that works for a few dozen units.

Then the fleet grows across regions and dealers. The engineer who remembered every bearing swap has moved to another role, and now each call opens with the same question, what did we ship to this site?

Slow answers cost goodwill. They cost money too, because a technician sent without the right spare makes a second trip, while the customer waits with an idle machine.

Start with the unit. Capture the serial number, the model, the build date, the dealer or installer, the site address and the commissioning date from the dispatch note and the site handover. Warranty starts at commissioning, not dispatch. Record both dates.

Add the parts that matter. For a motor that means the bearing set and winding code, for a lighting fixture the driver lot, and for a charger the controller board revision.

Each field call becomes a visit record holding the fault description, the finding, the action taken and the engineer who attended, whether or not a part changed. A phone photo of the nameplate saves typing.

Every part issued to a field job should be linked to the unit it went into, with the lot number copied from the box, not typed from memory. A spare issued against nothing teaches you nothing.

With that link, the question changes. Instead of asking whether bearings fail often, you ask which bearing lot failed on units sold to cement plants; the pattern points to the supplier, not the site.

It also sets spare stock sensibly. Fast-moving spares go to regional branches, slow items stay at the head office, and each minimum level follows the visit history instead of a guess.

A claim stands or falls on three answers: was the unit within warranty, was it installed to the manual, and was the failed part original? Each answer usually sits in a different place.

Decide the rules before the dispute. Misuse, a wrong supply voltage and unauthorised repair are common exclusions, so write them into the terms and attach the checklist the engineer fills on site.

Failed parts go back with the visit number. The supplier’s credit note then matches one unit and one visit, so the quarterly reconciliation is a short job instead of a hunt through emails.

Pick your top five models by installed count. List every unit sold in the last two years from dispatch records and add the install site; that alone gives you a searchable base.

Then require a visit record for every call, even a phone fix that took five minutes and no travel at all, so the log reflects every contact. Within a quarter you will see which spares you under-stocked, which dealers call most and which models bring the same fault back.

Review the repeat-failure list monthly with the quality head, then send it to the bearing or driver supplier with lot numbers and ask for a root cause.