So after I installed the deuterium handling system I tried turning on the vacuum system, but it seems I’m not able to pull a vacuum now! The turbopump won’t spin up past 1/5 speed as indicated here (the bar of green LEDs):
The pump won’t spin all the way up if the chamber is not holding a hard vacuum. Or at least that seems to be the case based on my experience with this pump. I suppose a sanity check would be to install a blank conflat over the pump and fire it up. But this would require some work uninstalling and reinstalling.
Assuming the pump is telling me there is a leak, it must be a leak in the deuterium system I just installed, right?
Time for some troubleshooting. I tried this configuration:
This is just the fluid feed throughs capped with VCR caps. Still not able to pull a vacuum in this configuration. Lets eliminate failure points again and just install a blank conflat here:
STILL FAILURE! WTF!
Basically the chamber configuration is untouched from it’s last know working state except for this blank conflat. I’m really perplexed. What just happened?
UPDATE:
It looks like our turbo pump is blown. What a bummer. I put a blank conflat right on the pump to see if I could get it to spin up. No dice. Then I noticed the sound coming from the turbo pump isn’t right.
I’ll speak with the manufacturer on Tuesday about steps to fix this. What a bummer.