The manual of VIRYA-2.2 is replaced by the manual of the VIRYA-1.81. The VIRYA-2.2 had a steel stator disk and it was expected that the heat generation in this sheet could be too high at high rotational speeds. The VIRYA-1.81 makes use of the same magnets but has a synthetic stator disk and no heat will be dissipated in this disk. As the maximum torque level for a synthetic stator sheet is lower than for a steel stator disk, the rotor diameter is reduced from 2.2 m up to 1.81 m. The design report of the VIRYA-2.2 with report number KD 607 is cancelled and replaced by the design report of the VIRYA-1.81 with report number 631.