German to English Tech/Engineering Mechanics / Mech Engineering

Dear colleagues,

I'm translating the book AI in Marketing, Sales and Service by Peter Gentsch.

Originally, this book was written in German (Künstliche Intelligenz für Sales, Marketing und Service: Mit AI und Bots zu einem Algorithmic Business) so I'm dealing with the English translation of the German original. And sometimes the English translaion seems rather strange to me and to native English speakers as well.

This is the German original:

Im Gegensatz zu einer Wartungslogik dieser Maschine, die nach festen zeitlichen oder Nutzungs-Zyklen abläuft, bezieht das Predictive-Maintenance-Modell interne wie externe statische wie dynamische Daten ein, um zu prognostizieren, wie hoch die Wahr- scheinlichkeit eines Ausfalls der Maschine ist. Nun kann man rein wirtschaftlich überlegen, was der Ausfall der Maschine pro Tag oder Stunde kostet. Hier geht es um eine Optimierung der Wartungs-bzw. Gesamt-Servicing-Kosten. ***Erfolgt die Wartung zu früh***, hätten die Verschleißteile der Anlage länger genutzt werden können. Es entstehen also unnötige Kosten. Steht die Maschine, entstehen dem Kundenunternehmen Ausfallkosten, die unter Umständen vertragsbedingt an das herstellende Unternehmen weitergereicht werden können. Auch hier kommt wieder Machine Learning ins Spiel. Der Algorithmus lernt mit jedem Ausfall einer Maschine hinzu. Auf der Basis aller laufenden Maschi- nen und deren Service-Intervallen und ungeplanten Ausfällen wird die Genauigkeit des Schätzmodells immer besser und kann so den optimalen Zeitpunkt für eine Wartung bzw. einen Austausch feststellen.

This is the English translation:
In contrast to a maintenance controller of this machine, which runs according to fixed times and usage cycles, the Predictive Maintenance model uses both internal and external as well as dynamic data to predict the machine’s default probability. In purely economic terms, one can now consider the costs of a machine default on a daily or hourly basis. This is about optimising the maintenance or total maintenance costs. ***If maintenance is carried out prematurely***, the equipment’s wear parts could have been used for a longer period of time. This results in unnecessary costs. If the machine is incurred by the client company itself, the downtime costs can be passed on to the manufacturing company under certain contract conditions. Once again, machine learning comes into play. The algorithm learns from every machine default. Based on all running machines and their service intervals as well as unplanned defaults, the estimation model’s accuracy continuously improves and can thus determine the optimal time for maintenance or replacement to occur.

Well, maybe it's only me, but the sentence "If maintenance is carried out prematurely, the equipment’s wear parts could have been used for a longer period of time" sounds strange to me and I'm not sure wha it means in this particular context.

I have two interpretations of the intended meaning:

1. You carry out maintenance prematurely (earlier than necessary) and it prevents wear parts from being used for a longer period of time.
2. You carry out maintenance in advance (i.e. you do not wait until something is broken or worn out) and thanks to that wear parts can be used for a longer period of time.

So what is the intended meaning of the German original?

Thank you.