This 41-kilometre (25 mi) long route between the two termini was to be worked without turning the locomotive.

Because the engine tended to derail, in practice it was turned whenever possible.

The boiler had to be positioned further forward than was usual on other locomotives in order to even out the distribution of weight, because the design omitted any trailing wheels.

The other locomotive (7404) was given to the Chemins de fer du Nord under the terms of the Versailles Treaty.

In 1964 there were still six units on duty with the East Hanoverian Railway (Osthannoversche Eisenbahnen; OHE).