noun which may take the genitive case particle 'no', noun
existing; established; already installed
Used for facilities, equipment, systems, or organizations that are already in place. Often contrasted with 新設 (newly established) or 未設 (not yet established).
Antonyms: 未設
既設の設備を点検する。
Inspect the existing equipment.
既設の配管を利用して新しいシステムを
We introduced a new system using the existing piping.