There was an accumulation of tiny bits that somehow made it through the center grill and hung around in the hose. It’s in a low spot so unlikely to clear by itself, but not any obstruction.
But the actual prob was encrustation on the grill on the blower inlet. Really it doesn’t need a grill here so with the help of @jamesfreeman we just cut it off and sprayed out the impeller find and the flow is all back.
I can see that cleaning the blower’s impeller is going to be a regular maintenance issue, like monthly-ish.
Thanks, Danny. Do we have any maintenance checklists set up for stuff like this? I know there’s been some discussions of such around shop stewarding, etc, but I don’t remember a consensus actually forming around some ticket system, Discourse convention, or whatever. Having something like a monthly reminder and checkbox for folks willing to take care of such stuff seems like a good idea in general.
I’m building a maintenance list here, this definitely goes on it. Red/Blue didn’t need it often, but Tarkin is a much heavier duty machine and it was running constantly for a long time around the holidays.
I didn’t expect that much buildup this soon. Part of that was the overly restrictive inlet grill, it clogged fast and stalled a lot of the airflow
Cleaning the chiller is also going to need to be done pretty regularly, but that might change when we get doors in