How to pre clean a very dirty LP before Ultrasound Machine?

I don't know if you can control temp, try to keep it a couple inches away. I use distilled water in steamer. There are you tube videos out there. I'm not trying to make it complicated but you still need a way to remove dirty steamed water. Only way I know is to vacuum. i would think a cloth rag will scratch album and you would need a lot of rags. Vacuum wand may scratch also but if you flood album with distilled water with spray bottle over steam water and vacuum lightly puddle of water not record your odds are better for less damage. This process is going to be a pain in the a$$ but there is a clean pristine record under all the crap.

Forgot to add apply your choice of enzyme cleaner to record with spay mist bottle and let sit for 5 or 10 minutes before steam. 

Which Enzyme do you recommend?

Mobile Fidelity enzyme cleaner $29, Audio Intellagent enzyme $37, both at Music Direct, there both good, 750 records I would go cheap, be sure to rinse off enzyme cleaner off with water or a record wash cleaner. Music direct has 50 record sleeves a brush and record wash for package deal of $39. That would through u into free shipping deal.

I read someone said us windex. Do not use window cleaner on vinyl. The ammonia can damage the vinyl.