This is the 11072nd most frequent Swedish word.
maskinsalen
"The machine room."
The word 'maskinsalen' is used as a location noun referring specifically to the room dedicated to machines.
Jag arbetade i maskinsalen hela natten.
I worked in the machine room all night.
Here, 'maskinsalen' describes the subject of the sentence, identifying the environment being discussed.
Maskinsalen var mörk och tyst när jag kom in.
The machine room was dark and silent when I entered.
In this sentence, 'maskinsalen' is presented as an object receiving the action, signifying the direct space affected by the verb 'clean'.