洗浄 and 洗濯: Cleaning instruments or pipes and doing laundry
Compare 洗浄 for instruments or pipe interiors with 洗濯 for laundry. Distinguish introducing a cleaning device from completion of the cleaning it is designed for.
Cleaning named as 洗浄
洗浄 means washing or cleaning. 「使用後の器具を温水で洗浄した。」 reports washing instruments with hot water after use. The instruments are the cleaned objects; no precise temperature is stated.
「細い管の内部を洗浄する装置を導入した。」 reports introducing a device for cleaning the inside of narrow pipes. 洗浄する describes the device’s function, while introduction is the main completed action.
Laundry named as 洗濯
洗濯 means laundry or washing. 「天気がいいので、朝から洗濯をしました。」 reports doing laundry in the morning because the weather was good. It names the activity.
「旅行中はホテルのコインランドリーで洗濯しました。」 reports using the hotel’s coin laundry during a trip. The activity is connected with its location.
The activity and the introduced device
洗浄 covers the instruments or pipe interiors in these examples, while 洗濯 names laundry. 洗浄 is not restricted to machine-based work; the instrument-washing sentence is also a use.
In the pipe sentence, introducing the device is completed. Its cleaning function does not establish that the pipes themselves have already been cleaned.
What is completed in 細い管の内部を洗浄する装置を導入した: introducing a device or cleaning the pipe interiors?
Show the answer and why
Introducing the device is completed. 洗浄する describes its function, without reporting completed cleaning of the pipe interiors.