I have to agree with the Silver back of this board
and his advice of using a powerful pre vacuum or even power lifter to get out that 80% of dry soling most carpets hold and considering Lens ruf is double the thickness it needs double the amount of vacuuming before you even think of placing and water base cleaning solution to it .. I saw that vid of the cimex machine floating in water with horror
.. that rug must of had some bad smoke damage to give it a soaking like that anyway it sure needs some flood restoration work done to it now