I know you have to wait 24 hours after delivery before first using a dehumidifier but what about when you've just moved it inside a room? I had to move mine away from a window about 1m or so so I could clean the window properly, but I could really do with using it today as I have laundry hanging up. Some online sources say 4 hours is adequate, does anyone know? It's a Meaco 12 litre.