 Early May 2014 Dutch railway refurbishment and overhaul company <unk> announced they had won the contract to refurbish the entire fleet . The first set was to arrive in May 2014 for inspection , scheduling of the works involved and evaluation of the process while the remainder of the fleet would come in from spring 2015 . All sets were to be transported by rail via Sweden , Denmark and Germany to the main facility in Haarlem . 
