Dielectric window cleaning apparatuses

A dielectric window cleaning apparatus may be used for cleaning a dielectric window of a plasma processing device. The dielectric window cleaning apparatus may comprise a window support base, a fluid containing enclosure, a window rotating mechanism, a spray arm, and multiple fluid spraying nozzles. The fluid containing enclosure may include at least one overflow containment sidewall and may be located at least partially under and at least partially around a portion of the window support base. The window rotating mechanism may be operatively connected to the window support base and may rotate the window support base. The spray arm may be in fluid communication with a fluid source and may include a fluid flow channel. The multiple fluid spraying nozzles may each expel fluid from the fluid flow channel in a window cleansing spray.