Cadlights Biopellet reactor pump

[Treebeard]

Are these pumps serviceable? Mine quit working a couple of weeks ago and I could not see any way of taking it apart so I rinsed it out as best as I could and got it working again, but when I returned from vacation last night it had quit again. I see they sell a replacement pump for it but this thing has only been running since last December and I would hope it to last longer.