"Eat that, humidity!"
Well yes. And it works. Only, this ventilator is so strong that you cannot close the cellar door any more. It has two 10x10cm ventilation grilles, but that is not enough. So, the door needed to be slightly ajar, with a rubber bandage to keep it as closed as possible. But, never actually closed.
Worse is that the cellar takes its air from the kitchen, so in the evenings, when the heating is on, a lot of warmth was sucked into the cellar. You could see the curtain flap. Added a timer to switch off the ventilator in the evening and at night. At night too, as you could hear the ventilator drone in the distance, as the cellar door was slightly ajar. But, then, in the morning, you could once again smell the cellar slightly, in the kitchen.
Grmbl.
Decided on a new plan. Now the lowest mill cellar is naturally ventilated again by the grille next to the house and the window in the back of the garage there no longer is an absolute need to force the air from our cellar through there. Closed off the hatch to the lowest mill cellar by putting the hatch with the big ventilator in a plastic bin bag. And, re-installed the 15 Watt 230V ventilator on the pipe that goes outside at the top and back of the cellar.
Now the ventilation opening in the door are big enough, so the door can be properly closed. Attached a plastic bag to each of the ventilation openings, so air can only go into the cellar, and not out.
Slightly more humid (5%) than the kitchen, and the outside air.
Yes, freezer bag and gaffa tape.
