Ore Washing Plant not filling

https://preview.redd.it/g4ql2a91hg9e1.png?width=1701&format=png&auto=webp&s=d5f993368bf0fece3bee022b92036515bca38b10

As the title notes, the ore washing plant is not filling up with water. There is water in the input hatch, power to the machine, no maintenance issues, but it will not fill up.

Any ideas?

I assume if you want to use distilled water, you add another hatch with distilled. Likewise, in chemical bath mode, you add a second hatch with mercury. Is that correct? I tried that and nothing. I then broke the distilled hatch and replaced it with wash casing to see if I could get it to fill up, but no luck.