The purpose of the European XFEL pump carts is to pump vacuum chambers or beamline sections down to a vacuum of $10^{-8}$ mbar. The pump carts have a scroll pump and a turbo pump. Accordingly, a pressure in the ultrahigh vacuum range can be achieved. Generally, this range of ultrahigh vacuum is required to switch on ion pumps, which then generate a vacuum of up to $10^{-10}$ mbar and also keep this vacuum. European XFEL pump carts are serviced by the European XFEL Vacuum group and can be borrowed from there.