The locomotives received transformers in 1947, which were installed in Oslo, and 2064 was delivered on 24 May. The cost of the three locomotives was 1,297,905 million Norwegian krone. At first, only one unit was transferred to Flåm. The other two remained in Eastern Norway; one was stationed as a shunter at Oslo West Station, the other in Skien. The units operating in Oslo and Skien had problems with the rheostatic brake operating differently depending on the direction the train was running, something which was not observed in Flåm. The issue was fixed by marginally changing the excitation voltage. The unit stationed in Flåm was periodically sent for service in Oslo, and when this happened, a new unit would be stationed in Flåm. From 21 January 1949, 2064 was returned to Flåm without the other unit being sent back. From 17 February 1955, all three were stationed in Flåm. During the late 1950s, one of the units was stationed as Voss Station for shunting duty. Starting in the late 1950s, the class was also used on the Hardanger Line.