Since its construction, Georges Schwenkedel's masterpiece has seen several organ builders intervene for repairs (1958) and upgrades (1978, Steinmetz / 2001 & 2014, Dott / 2019, Guerrier).

The facade, as beautiful as it is, suffers from too long pipes exerting a constraint which made the pipes bend at the level of the mouths twice (2001 and 2019). Faced with the urgency and the threat of seeing a dozen of them sold, the Jean-Christian Guerrier & Associés organ factory (under the supervision of Mr. Christian Lutz, organ technician with the Historic Monuments and Mr. Panel, Curator des Monuments Historiques) proceeded with the repair of the affected pipes and the remarkable tuning of the entire facade.
In a second step, the repair of the horns (“stuck notes” linked to defective skins) to the expressive narrative as well as a general agreement were achieved.
We should salute here the very high quality of the work carried out by the Guerrier et associés manufacture, which is now in charge of monitoring and maintaining the instrument following Richard Dott, who retired in October 2018.
Thus the instrument is to this day in perfect condition: the result of an exemplary follow-up of the titular organists who have succeeded one another, the support of the municipality and the know-how of the organ builders.